Isle of Man TT#Fastest race lap by year

The Isle of Man TT is run in a time-trial format on public roads closed to the public by an Act of Tynwald. The event consists of one week of practice and qualifying sessions followed by one week of racing. It was a tradition, perhaps started by racing competitors in the early 1920s, for spectators to tour the Snaefell Mountain Course on motorcycles during the Isle of Man TT on 'Mad Sunday',Isle of Man Examiner page 2 12 November 1921 an informal and unofficial event held on the Sunday between Practice Week and Race Week.Here Is the News: A Chronicle of the 20th Century, Volume 1 page 78 Gordon N.Kniverton & Terry Cringle Manx Heritage Foundation (1999) The Manx Experience {{ISBN|9781873120460}} In 2022, race organizers announced that beginning in 2023, racing would take place on Sunday after practices to allow visitors to see more events, marking the end of Mad Sunday.{{Cite web |date=2022-06-06 |title=The last Mad Sunday: major changes due for 2023 TT |url=https://www.iomtoday.co.im/news/the-last-mad-sunday-major-changes-due-for-2023-tt-549852 |access-date=2024-02-02 |website=Isle of Man}}{{Cite web |date=2023-05-29 |title=TT schedule and road closures |url=https://www.iomtoday.co.im/news/significant-changes-for-this-years-tt-when-races-are-scheduled-to-take-place-617099 |access-date=2024-02-02 |website=Isle of Man}}File:2013 Isle of Man TT 10.jpg in front of Bruce Anstey during the 2013 Supersport TT]]

The first Isle of Man TT race was held on Tuesday 28 May 1907 and was named the International Auto-Cycle Tourist Trophy.Official Programme – International Auto-Cycle Tourist Trophy 28 May 1907 pages 1–3 The Auto-Cycle Club (1907). Reproduction (2007) Isle of Man Post Office The event was organised by the Auto-Cycle Club over 10 laps of the Isle of Man St John's Short Course of {{convert|15|mi|km}} {{convert|1470|yd|m}} for road-legal 'touring' motorcycles with exhaust silencers, saddles, pedals and mudguards.

From 1911, the Isle of Man TT transferred to the much longer Snaefell Mountain Course of {{Convert|37.40|mi|km|abbr=out}} (current length {{Convert|37.73|mi|km|abbr=out}}). Its elevation goes from near sea-level to {{Convert|400|m|ft|abbr=out|order=flip}}.{{Cite web|url=https://www.rideapart.com/articles/245901/everything-you-need-to-know-about-the-isle-of-man-tt/|title=Everything You Need To Know About: The Isle of Man TT|first=Tim|last=Huber|website=RideApart.com}} The race programme developed from a single race with two classes for the 1907 Isle of Man TT, expanding in 1911 to two individual races for the 350cc Junior TT motor-cycles and the Blue Riband event the 500cc Senior TT race. The race did not take place from 1915 to 1919 due to the First World War. It resumed in 1920. A 250cc Lightweight TT race was added to the Isle of Man TT programme in 1922, followed by a Sidecar TT race in 1923.

There was no racing on the Isle of Man between 1940 and 1945 due to the Second World War. It recommenced with the Manx Grand Prix in 1946 and the Isle of Man TT in 1947, with a greatly expanded format that included the new Clubman's TT races. The Isle of Man TT became part of the FIM Motor-cycle Grand Prix World Championship (now MotoGP) as the British round of the World Motor-Cycling Championship during the period 1949–1976. Following safety concerns with the Snaefell Mountain Course and problems over inadequate "start-money" for competitors, there was a boycott of the Isle of Man TT races from the early 1970s by many of the leading competitors, motorcycle manufacturers and national motorcycle sporting federations.Motor-Cycle pages 1 & 6 14 June 1972

Beryl Swain became the first woman to compete in a TT race for solo motorcycles when she competed in the Isle of Man TT in 1962.[https://www.thetimes.com/travel/destinations/europe-travel/italy/beryl-swain-m0jp9wpvdwq Beryl Swain The first woman solo motorcyclist to finish in a TT race] www.thetimes.co.uk, Retrieved 2021-03-10 There was subsequently a ban on women in the race from 1962 until Hilary Musson competed in 1978."Will Beryl race on the Island again?" Motorcycle News, 27 Feb 1963, p.9. Accessed 13 April 2024.[https://www.bbc.co.uk/isleofman/content/articles/2008/01/17/swain_feature.shtml Goddess of the Gas Pedals] BBC Isle of Man, 13 November 2014 Retrieved 2015-01-18[http://www.ttwebsite.com/ladies/profiles/hmusson/index.htm Female Rider Profiles on the Isle of Man TT Website – Hilary Musson] www.ttwebsite.com, Retrieved 2021-03-10"First Lady. Hilary Musson and Yamaha". Motorcycle Sport, August 1978, p.302, p.310. Accessed 16 September 2022

The race is regarded as the most dangerous motorsport event in the world; The New York Times said in 2017 that the number of deaths had risen "to 146 since it was first run in 1907; if one includes fatal accidents occurring during the Manx Grand Prix ... the figure rises above 250".{{cite news |url=https://www.nytimes.com/interactive/2017/06/07/sports/Isle-of-man-TT-motorcycle-race.html|last=KEH |first=ANDREW |title=Take a Lap in the World's Most Dangerous Race| newspaper=New York Times|access-date=26 October 2017|date=7 June 2017 }}{{cite web |url=http://www.motorsport.com/all/article/?id=743709|last=DeGroot |first=Nick |title=Two fatalities in a single day rock the 2016 Isle of Man TT| publisher=Motorsport.com|access-date=7 February 2017|date=5 June 2016 }} {{dead link|date=May 2023}} An account of the 2003 race by Sports Illustrated writer Franz Lidz called the TT "a test of nerves and speed that may be sports' most dangerous event."{{Cite magazine |title=38 Miles of Terror - Every year riders roar around the Isle of Man in the Tourist Trophy, a test of nerves and speed that may be sports' most dangerous event |last=Lidz |first=Franz |magazine=Sports Illustrated - Vault |date=8 September 2003 |url= https://vault.si.com/vault/2003/09/08/38-miles-of-terror-every-year-riders-roar-around-the-isle-of-man-in-the-tourist-trophy-a-test-of-nerves-and-speed-that-may-be-sports-most-dangerous-event }}

In 1976, the Isle of Man TT lost its world championship status; this was transferred to the United Kingdom by the FIM and run as the British Grand Prix for the 1977 season. The Isle of Man TT Races then became an integral part of the new style TT Formula 1, Formula 2 and Formula 3 World Championships between 1977 and 1990 to develop and maintain the international racing status of the Isle of Man TT races.Isle of Man's Big 3 Race Events : The Spectator Guide. TT (Tourist Trophy), Festival of Motorcycling (incorporating Manx Grand Prix), Southern 100 page 43 Trevor Barret (2014) Lily Publication {{ISBN|1907945237}}

The event was redeveloped by the Isle of Man Department of Tourism as the Isle of Man TT Festival from 1989 onwards. This included new racing events for the new Isle of Man TT Festival programme, including the Pre-TT Classic Races in 1989 followed by the Post-TT Races from 1991, both held on the Billown Circuit. In 2013, the Isle of Man Classic TT was developed by the Isle of Man Department of Economic Development and the Auto-Cycle Union for historic racing motorcycles, and along with the Manx Grand Prix, it formed part of the 'Isle of Man Festival of Motorcycling' held in late August of each year. The Classic TT brand ceased operation prior to the 2022 event, with classes for historic racing motorcycles integrated into the Manx Grand Prix. The TT is now promoted by the Isle of Man Government Department for Enterprise.

There has been criticism of the event. In 2007, an incident during the Senior Race resulted in the deaths of a rider and two spectators.{{Cite web|url=https://ultimatemotorcycling.com/2017/06/07/2017-isle-man-tt-three-riders-die-tt-crashes-lambert-hoek-bonner/|title=3 Dead After 2017 Isle of Man TT Crashes: Lambert, Hoek, Bonner|date=7 June 2017|website=Ultimate Motorcycling}} The resultant inquest made several recommendations and included several comments, such as: 'Senior Marshals may well have been elevated beyond the sphere of their competence'.{{Cite web |website=Isle of Man Judgments Online|title=RAMSBOTHAM and JACOB and KENZIG, part 2 |publisher=Isle of Man Courts|author=CORONER OF INQUESTS|date=20 March 2008 |url= https://www.judgments.im/content/J590.htm}} The coroner also noted that "I am more than aware of the fact that the witnesses from the Manx Motor Cycle Club and the marshals are all volunteers. They give their time freely and without paid reward. Having said that however, if it were suggested because they were volunteers there should be some allowance in the standards expected of them, then I regret I cannot agree."{{Cite web |website=Isle of Man Judgments Online|title=RAMSBOTHAM and JACOB and KENZIG, part 1 |publisher=Isle of Man Courts|author=CORONER OF INQUESTS |date=20 March 2008 |url= https://www.judgments.im/content/J583.htm}}

The 2020 and 2021 TT races were cancelled because of the COVID-19 pandemic.{{Cite news|url=https://www.bbc.co.uk/news/world-europe-isle-of-man-51918501|title=Coronavirus: Isle of Man cancels TT races amid virus outbreak|work=BBC News|date=16 March 2020}}{{cite web |title=2021 TT Festival: Covid-19 fears force Manx government to cancel event |url=https://www.bbc.co.uk/news/world-europe-isle-of-man-55130836 |publisher=BBC Sport |access-date=20 January 2021 |date=30 November 2020}}

Motor racing began on the Isle of Man in 1904 with the Gordon Bennett Eliminating Trial, restricted to touring automobiles. As the Motor Car Act 1903 placed a speed restriction of {{convert|20|mph|abbr=on}} on automobiles in the UK, Julian Orde, Secretary of the Automobile Car Club of Britain and Ireland approached the authorities in the Isle of Man for the permission to race automobiles on the island's public roads.Island Racer 2004 pp 112–113 Mortons Media Group Ltd. {{ISBN|9780954244224}} The Highways (Light Locomotive) Act 1904 gave permission in the Isle of Man for the {{convert|52.15|mi|adj=on}} Highroads Course for the 1904 Gordon Bennett Eliminating Trial which was won by Clifford Earl (Napier) in 7 hours 26.5 minutes for five laps ({{convert|255.5|mi|disp=or|abbr=on}}) of the Highroads Course. The 1905 Gordon Bennett Trial was held on 30 May 1905 and was again won by Clifford Earl driving a Napier automobile in 6 hours and 6 minutes for six laps of the Highroads Course. This was followed in September 1905 with the first Isle of Man Tourist Trophy Race for racing automobiles, now known as the RAC Tourist Trophy and was won by John Napier (Arrol-Johnston) in 6 hours and 9 minutes at an average speed of {{convert|33.90|mph|abbr=on}}.TT Pioneers – Early Car Racing in the Isle of Man by Robert Kelly p68 The Manx Experience (1996) The Alden Press ISBN No 1 873120 61 3

For the 1905 Gordon Bennett Eliminating Trial it was decided to run an eliminating trial for motorcycles the day afterwards for a team to represent Great Britain in the International Motor-Cycle Cup Races. An accident at Ramsey Hairpin forced out one of the pre-race favourites, and the inability of the competitors to climb the steep Mountain Section of the course forced the organisers to use a {{convert|25|mi|adj=on}} section of the Gordon Bennett Trial course. This ran from Douglas south to Castletown and then north to Ballacraine along the primary A3 road and returning to the start at the Quarterbridge in Douglas via Crosby and Glen Vine along the current Snaefell Mountain Course in the reverse direction. The 1905 International Motor-Cycle Cup Race for five laps ({{convert|125|mi|disp=or|abbr=on}}) was won by J.S. Campbell (Ariel) despite a fire during a pit stopThe Motor Cycle pp545 dated 19 June 1905 in 4 hours, 9 minutes and 36 seconds at an average race speed of {{convert|30.04|mph|abbr=on}}.Island Racer 2003 p89 Mortons Media Group Ltd {{ISBN|0954244222}}

File:Start Senior TT 2010 IMG P0001185.jpg Senior TT race]]

The TT Races since the first race in 1907 have been in the format of time-trial. The races held on the Clypse Course during the period 1954–1959 were the more traditional full grid starts along with the 1924 Lightweight TT Race and Clubmen TT Races from 1948, which were also "mass-start" races. The current format is a "clutch start" and race competitors will be "started singly at 10-second intervals".2015 International Tourist Trophy Regulations page 22 ACU Events Isle of Man Limited (2015) Isle of Man Department of Economic Development

• Start Preliminaries
• First Signal – 45 minutes before the start with a warm-up of engines in the Race Paddock and assembly area.
• Second Signal – 30 minutes before start.
• Third Signal – 15 minutes before start, race competitors move to the start-line and form-up in qualification order.
• Fourth Signal – 5 minutes before start, signal to clear the grid and race competitors move towards the exit-gate.

Entrants must be in possession of a valid National Entrants or FIM Sponsors Licence for Road Racing.

Entrants must also cite pre-filled documentation of completion of a UK driving licence or motorcycle certification, or a driver's licence from a comparable country that is recognised by UK comparable department of transportation standards and may withhold due to any pre race or post race suspensions.

; Current

• Senior TT (1909–present)
• Supersport TT (2005–present)
• Superbike TT (2005–present)
• Superstock TT (2005–present)
• Supertwin TT (2022–present)
• Sidecar TT (1923–1925, 1951–1967, 1977–present)

; Former

• Singles TT (1907–1908, 1994–2000)
• Twin TT (1907–1908)
• Sidecar 1000 TT (1975–1976)
• Sidecar 750 TT (1968–1974)
• Sidecar 500 TT (1968–1976)
• Ultra-Lightweight TT (1924–1925, 1951–1974, 1989–2004, 2008)
• Clubman Senior TT (1947–1956)
• Clubman Junior TT (1947–1956)
• Clubman Lightweight TT (1947–1950)
• Clubman 1000 TT (1949–1950, 1953)
• 50 TT (1962–1968)
• Classic TT (1975–1984)
• Formula 1 TT (1977–2004)
• Formula 2 TT (1977–1987)
• Formula 3 TT (1977–1982)
• Production 1500 TT (1985–1985)
• Production 1000 TT (1974, 2002–2004)
• Production 750 TT (1967–1973, 1984–1985)
• Production 500 / 600 TT (1967–1974, 2002–2004)
• Production 250 TT (1967–1974, 1984–1985)
• Production TT (1975–1976, 1996–2000)
• Production A TT (1986–1988)
• Production B TT (1986–1988)
• Production C TT (1986–1988)
• Production D TT (1986–1988)
• Supersport 600 TT (1989–1994)
• Supersport 400 TT (1989–1994)
• Lightweight 400 TT (1999–2004)
• TTXGP (2009)
• TT Zero (2010–2019)
• Lightweight TT (1922–1976, 1995–2004, 2012–2019)

The 2015 specification for entries into the Superbike TT race are defined as:

• Any machine complying with the following specifications:
• TT Superbike: (Machines complying with the 2015 FIM Superbike Championship specifications)
• Over 750 cc up to 1000 cc 4 cylinders 4-stroke
• Over 750 cc up to 1000 cc 3 cylinders 4-stroke
• Over 850 cc up to 1200 cc 2 cylinders 4-stroke

Minimum Weight {{convert|165|kg|abbr=on}}. Other machines admitted at the discretion of the Organisers2015 International Tourist Trophy Regulations ACU Events Isle of Man Limited page 5 and page 58 Appendix A

The 1911 Isle of Man TT was the first time the Junior TT race took place, open to 300 cc single-cylinder and 340 cc twin cylinder motorcycles, contested over five laps of the new {{convert|37.5|mi|adj=on}} Snaefell Mountain Course. The first event on the new course was the Junior TT Race contested by 35 entrants, won by Percy J. Evans riding a Humber motor-cycle at an average race speed of {{convert|41.45|mph|abbr=on}}. The 1912 event was the first to limit the Junior TT to only 350 cc machines and this engine capacity prevailed until 1976, after which the category was dropped. The event was instead run for 250 cc machines until 1994 when replaced by the 600 cc Supersport class.

:* 1911 For single cylinder motorcycles not exceeding 300 cc engine capacity and 340 cc twin cylinder motorcycles.

:* 1912–1948 For motorcycles not exceeding 350 cc engine capacity.

:* 1949–1953 FIM World Championship event for motorcycles not exceeding 350 cc engine capacity and held on the Snaefell mountain course.

:* 1954–1959 FIM World Championship event for motorcycles not exceeding 350 cc engine capacity and held on the Clypse Course.

:* 1960–1976 FIM World Championship event for motorcycles not exceeding 350 cc engine capacity and held on the Mountain Course.

:* 1977–1994 for motorcycles not exceeding 250 cc engine capacity and held on the Mountain Course.

:* 1995 onwards for motorcycles not exceeding 600 cc engine capacity and held on the Mountain Course.

The 2015 specifications for entries into the Supersport TT race are:

:* TT Supersport: (Machines complying with the 2015 FIM Supersport Championship specifications)

::* Over 400 cc up to 600 cc 4 cylinders 4-stroke

::* Over 600 cc up to 675 cc 3 cylinders 4-stroke

::* Over 600 cc up to 750 cc 2 cylinders 4-stroke

Minimum Weight 161 kg2015 International Tourist Trophy Regulations page 2 & Appendix C ACU Events Isle of Man Limited

{{main|Superstock TT}}

The 2015 specifications for entries for the Superstock TT, an event for production based motorcycles racing with treaded road tyres, are based on the FIM Superstock Championship specifications, as follows:

• Superstock TT: (Machines complying with the 2012 FIM Superstock Championship specifications)
• Over 750 cc up to 1000 cc 4 cylinders 4-stroke
• Over 750 cc up to 1000 cc 3 cylinders 4-stroke
• Over 850 cc up to 1200 cc 2 cylinders 4-stroke

Minimum (Dry) Weight 170 kgInternational Tourist Trophy Regulations 2015 page 5/Appendix D page 34 ACU Events (Isle of Man) Limited (2015) Isle of Man Department of Economic Development

Supertwin TT

2022 saw the introduction of the supertwin race run over 3 laps on Wednesday the 8th of June, increased to 4 laps the following year. The class is very similar to the lightweight class which last ran in 2019, although with some differences. The maximum capacity has been increased to 700cc allowing the Yamaha YZF-R7 and Aprilia RS660 to compete. In 2022 bikes with capacities of 651cc+ were required to run 10 kg heavier than the 150 kg limit for the 650cc machines, but 2023 saw this changed and all bikes in the class now have a minimum weight of 150 kg.{{Cite web |title=Technical Director Dave Hagen explains the Technical Tweaks for the 2023 Isle of Man TT Races |url=https://www.iomttraces.com/latest/features/tech-tweaks-for-tt-2023/ |access-date=2023-06-11 |website=www.iomttraces.com |language=en}}

{{main|Sidecar TT}}

File:2013 Isle of Man TT 14.jpg

The 1923 TT was the first time the Sidecar TT race was run, over three laps ({{convert|113|mi|disp=or|abbr=on}}) of the Mountain Course and was won by Freddie Dixon and passenger Walter Denny with a Douglas and special banking-sidecar at an average race speed of {{convert|53.15|mph|abbr=on}}. For the 1926 event the Sidecar and Ultra-Lightweight TT classes were dropped due to lack of entries.

The Sidecar race was re-introduced from the 1954 event for Sidecars not exceeding 500 cc engine capacity, run on the Clypse Course. A non-championship 750 cc class for sidecars was introduced at the 1968 event. For the 1976 event the race was held over two-legs. From 1975, the previous 500 cc and 750 cc classes for Sidecars were replaced by a 1000 cc engine capacity class.

The new FIM Formula 2 class for Sidecars was introduced for the 1990 Isle of Man TT.

• 1954–1959 FIM World Championship Event for Side-Cars not exceeding 500 cc engine capacity. Race held on the Clypse Course.
• 1960–1976 FIM World Championship Event held on Mountain Course.
• 1968–1974 Non-Championship event for Sidecars not exceeding 750 cc.
• 1975–1989 Sidecars not exceeding 1000 cc engine capacity.
• 1990– FIM Formula 2 Sidecar race for two-stroke engines not exceeding 350 cc or four-stroke engines not exceeding 600 cc.

The 2015 specifications for entries into the Sidecar TT race are:

• Machines must comply with general technical rules as per ACU Standing Regulations and 2015 Isle of Man TT regulations.
• Engine Types
• 501 – 600 cc, 4 stroke, 4 cylinder, Production based motorcycle engines.

{{main|Senior TT}}

File:2010 senior TT IMG 1188.JPG on the start-line of the Senior TT Race on 11 June 2010 ]]

For the 1911 Isle of Man TT, the first TT event using the Snaefell Mountain Course or Mountain Course, two separate races were introduced. The first event was a four lap Junior TT race and a separate Senior TT race for 500 cc single-cylinder and 585 cc twin-cylinder motorcycles, over five laps of the new {{convert|37.5|mi|adj=on}} Snaefell Mountain Course. The new technical challenges of the Mountain Course forced changes on entrants and motorcycle manufacturers alike. The American Indian motorcycle factory fitted a two-speed gearbox and chain-drive.{{cite news| first=Simon| last=Patterson|title=THE COMPLETE BEGINNER'S GUIDE TO THE 2023 ISLE OF MAN TT |url=https://www.the-race.com/motorcycle-racing/2023-isle-of-man-tt-guide-and-schedule/ |access-date=13 March 2024 |work=The Race |date=29 May 2023 |language=en}} This proved to be the winning combination when Oliver Godfrey won the 1911 Senior TT race riding an Indian at an average speed of {{convert|47.63|mph|abbr=on}}. Fitted with a six-speed belt driveMotocourse History of the Isle of Man TT Races 1907–1989 page 18-19 and 23 (Mick Woollett Technical Notes) Nick Harris © Hazelton Securities Ltd (1990) Graficas Esatalla SA {{ISBN|0-905138-71-6}} Charlie Collier riding a Matchless motorcycle finished second in the 1911 Senior TT race and was later disqualified for illegal refuelling. During an early morning practice session for the 1911 Isle of Man TT races, Victor Surridge died after crashing his Rudge motorcycle at Glen Helen, the first death of a competitor on the Snaefell Mountain Course and the first death in the Isle of Man of a person in an automotive accident.TT Topics and Tales by David Wright – Amulree Publications (4 April 2006) {{ISBN|1901508099}}

:* 1911 For single cylinder motorcycles not exceeding 500 cc engine capacity and 585 cc twin cylinder motorcycles.

:* 1912–1939 For motorcycles not exceeding 500 cc engine capacity.

:* 1947–1948 For motorcycles not exceeding 500 cc engine capacity and a ban on engine supercharging.

:* 1949–1976 FIM World Championship event for motorcycles not exceeding 500 cc engine capacity.

:* 1977–1984 for motorcycles not exceeding 500 cc engine capacity.

:* 1985–2004 for motorcycles complying with ACU TT Formula 1 rules not exceeding 1,010 cc engine capacity.

:* 2004 onwards for motorcycles complying with ACU/FIM Superbike rules not exceeding 1,000 cc engine capacity.

The 2015 specifications for entries into the Senior TT race are:

• TT Superbike: (Machines complying with the 2015 FIM Superbike Championship specifications)2010 International Tourist Trophy Regulations page 2 ACU Events Isle of Man Limited
• Over 750 cc up to 1000 cc 4 cylinders 4-stroke
• Over 750 cc up to 1000 cc 3 cylinders 4-stroke
• Over 850 cc up to 1200 cc 2 cylinders 4-stroke

:*Supersport Junior TT (without limitation of tyre choice)

:** TT Superstock (without limitation of tyre choice)

:** Other machines admitted at the discretion of the Organisers.

The Clubman races with Lightweight, Junior and Senior classes were held for production motorcycles from 1947 until 1956.[http://www.iomtt.com/TT-Database/Events.aspx?meet_code=TT47%20%20&era=2 1947 TT races, overview] IoM TT.com. Retrieved 26 September 2015 A Senior 1000 cc class provided an opportunity for Vincent motorcycles.[http://www.iomtt.com/TT-Database/Events/Races.aspx?meet_code=TT50&race_seq=1 1950 Clubman TT 1000 cc class results] IoM TT.com. Retrieved 26 September 2015 The riders were little-known, but as the stars were barred from entering the class, it provided a stepping-stone for future-stars but resulted in less spectator-interest. The series became dominated by one model – the BSA Gold Star,[http://www.iomtt.com/TT-Database/Events/Races.aspx?meet_code=TT56&race_seq=2 1956 Clubman TT Junior class results] IoM TT.com. Retrieved 26 September 2015[http://www.iomtt.com/TT-Database/Events/Races.aspx?meet_code=TT56&race_seq=1 1956 Clubman TT Senior class results] IoM TT.com. Retrieved 26 September 2015 and with little competition from other manufacturers, was discontinued. When previewing the impending re-introduction of a specification-controlled, roadster-based class in March 1967, David Dixon wrote: "lack of inter-make rivalry probably put the final nail in the coffin".Motor Cycle, 9 March 1967, pp.284–286 Roadsters on the Magic Lap. A Production-TT Recce in Manxland by David Dixon. Accessed 26 September 2015

Writing in UK monthly magazine Motor Cyclist Illustrated, racing journalist Ray Knight, who had achieved a lap speed of nearly 88 mph on a Triumph Tiger 100 roadster-based racing motorcycle in the Manx Grand Prix,[http://www.manxgrandprix.org/Mountain-Course-Database/Events/Races.aspx?meet_code=MGP63&race_seq=2 1963 Senior race results, Competitor Ray Knight, Hughes Triumph] {{Webarchive|url=https://web.archive.org/web/20160304035517/http://www.manxgrandprix.org/Mountain-Course-Database/Events/Races.aspx?meet_code=MGP63&race_seq=2 |date=4 March 2016 }}, Manx Grand Prix.Org official website, Retrieved 19 October 2015[http://www.manxgrandprix.org/Mountain-Course-Database/Events/Races.aspx?meet_code=MGP64&race_seq=3 1964 Senior race results, Competitor Ray Knight, Hughes Triumph] {{Webarchive|url=https://web.archive.org/web/20160304035602/http://www.manxgrandprix.org/Mountain-Course-Database/Events/Races.aspx?meet_code=MGP64&race_seq=3 |date=4 March 2016 }}, Manx Grand Prix.Org official website, Retrieved 19 October 2015[http://www.iomtt.com/TT-Database/competitors.aspx?ride_id=2459&filter=K Ray Knight, Competitor Profile], IoM TT.com official website, Retrieved 19 October 2015 commented in early 1965 that the ACU had refused a request from manufacturers to run a production TT race, which he thought was a missed opportunity, particularly considering the dwindling support for the 500 cc race.Motor Cyclist Illustrated, January 1965, p.41 More Production racing. Accessed 19 October 2015File:Start lightweight TT IMG 0018.jpg's 650 cc Kawasaki at the start line of the 2012 Lightweight TT. He went on to win that year's race.]]A Production TT for roadster-based motorcycles having classes for maximum engine capacities of 250 cc, 500 cc and 750 cc was introduced from 1967 until 1976 when the class was discontinued.

The Production TT was reintroduced for the 1984 races in three classes, reduced to two classes on safety grounds for the 1990 races. For the 2005 races the Superstock class replaced the previous 1000 cc and 600 cc Production TT classes that had been part of the race schedule since 1989.

{{main|Ultra-Lightweight TT}}

{{main|Lightweight TT}}

{{main|TT Zero}}

The TT Zero was a one lap race for electric bikes running from 2010 to 2019. It was announced that the race would take a two-year break after 2019, but it never came back on the schedule since.{{Cite web |date=2023-06-07 |title=Will TT Zero class ever return? |url=https://www.iomtoday.co.im/news/will-tt-zero-class-ever-return-619267 |access-date=2023-11-23 |website=Isle of Man}}

After the completion of a practice or race period, an official course vehicle displaying the notice Roads Open proceeds around the Mountain Course, passing each point opening the roads including side-access junctions to public use. On the Snaefell mountain road section from Ramsey to Douglas, the official vehicle displays the notice Roads Open One Way.

File:Parliament Square Ramsey memorial with bibbed photographers.jpg on a race day in 2008]]

Originally introduced in 1935, there are eight machines positioned around the course to provide a rapid response to any incidents. Selected riders have previous race experience and are first-aid trained, with machines carrying medical equipment that can assist in managing a casualty. They also have other duties such as course inspection, observation of machines on the course for visible faults, and review and report any course incidents.[https://www.iomtt.com/news/2013/05/29/yamaha-keep-travelling-marshals-on-road-and-track Yamaha keep travelling marshals on Road and Track] iomtt.com, 29 May 2013. Retrieved 26 September 2020 Until 2024, all travelling marshals rode Honda CBR1000RR Fireblades.{{Cite web |date=2023-06-09 |title=Travelling Marshals play a vital role |url=https://www.iomttraces.com/latest/features/travelling-marshals-play-a-vital-role/ |access-date=2023-08-29 |website=www.iomttraces.com |language=en}} From 2025, BMW Motorrad announced a 3-year deal with the Isle of Man TT to supply a mixture of S1000RR and M1000RR machinery. {{Cite web |title=Isle of Man TT travelling marshals to use BMW S1000RR superbikes for 2025 |url=https://www.motorcyclenews.com/news/2025/may/bmw-supply-s1000rr-m1000rr-isle-of-man-tt-races/ |access-date=2025-05-27 |website=www.motorcyclenews.com |language=en}}

The 1982 Road Racing Act (Isle of Man) and the supplementary TT Road Races Orders allow vehicles and pedestrians to cross the Snaefell Mountain Course at certain points between scheduled race periods under the supervision of a police officer. Several permanent pedestrian overbridges have been erected. These points include:

• A2 St Ninian's Crossroads with the A22 Ballaquayle Road and the A22 Ballanard Road
• A2 junction at Bray Hill with the Tromode Road and Stoney Road
• A1 Peel Road between Braddan Bridge (Jubilee Oak) and the Quarterbridge
• A2 Governor's Road, Onchan, the A2 Glencrutchery Road and Victoria Road at Governor's Bridge
• A2 Glencrutchery Road between Second & Third Avenues and Victoria Road
• A18 Bemahague Road at Bedstead Corner, Onchan

File:Footbridge Glencrutchery Road Douglas Geograph 2389882.jpg|Pedestrian overbridge at Glencrutchery Road, Douglas, close to start/finish and TT Grandstand

File:Footbridge over the TT course near Hailwood Avenue Geograph 3936898.jpg|Pedestrian overbridge at Bedstead Corner, Douglas, with Hailwood Avenue junction to right

• A1 Douglas to Peel road with the A23 Eyreton Road and the B36 Old Church Road, Crosby
• A3 Castletown to Ramsey road junction with B10 Sartfield Road and the Ballaleigh Road at Barregarrow Crossroads, Michael
• A3 junction with A10 Station Road and C37 Ballaugh Glen Road at Ballaugh Bridge
• A3 junction with A14 Sandygate Road and A14 Tholt-y-Will Glen Road at Sulby Crossroads
• A2 Albert Square and Princes Road, Ramsey at the junction with A18 Snaefell Mountain Road, close to May Hill

File:School house corner IMG 0159.JPG|Pedestrian overbridge before School House Corner, western approach to Ramsey town

File:May Hill Isle of Man.jpg|Pedestrian overbridge exiting Ramsey town centre, looking south-east towards May Hill

File:Footbridge over the TT course near Bungalow Station Geograph 2537938.jpg|Pedestrian overbridge at The Bungalow, on Snaefell mountain

File:Steam Heritage Trail Isle of Man Geograph 2112551.jpg

The TT Access Road runs parallel to a section of the A1 Peel Road, which is part of the Snaefell Mountain Course, and operates during practice and race periods to enable vehicles to pass from inside of the race course to the outside. It runs along a section of former railway line on the historic Douglas to Peel route, from the junction of the A5 New Castletown Road at the Quarter Bridge, passing under the course at Braddan Bridge, to an exit at Braddan School Road in Douglas outskirts, near the former Braddan Railway Halt and the A23/Ballafletcher Road junction. The access road is a narrow, single-track width with passing places and is restricted to cars and light vans below a weight limit of {{convert|3500|kg|LT ST}}. When used for vehicular traffic, pedestrian access is prohibited, but at other times it is part of a system of nature trails.[http://www.iomtt.com/~/media/Files/2016/Downloads/RoadNotificationFile.pdf TT roads closure notice 2016] {{webarchive |url=https://web.archive.org/web/20160615084852/http://www.iomtt.com/~/media/Files/2016/Downloads/RoadNotificationFile.pdf |date=15 June 2016 }} Retrieved 1 June 2016[https://www.youtube.com/watch?v=ecr1zE6P5BA TVIM, 28 August 2013], Retrieved 12 December 2015

{{main|Isle of Man TT Mountain Course#Safety}}

{{see also|List of Isle of Man TT Mountain Course fatalities}}

Between 1907 and 2023, there have been 156 fatalities during official practices or races on the Snaefell Mountain Course, and 269 total fatalities (this number includes the riders killed during the Manx Grand Prix, and Clubman TT race series of the late 1940s/1950s).{{cite news|url=http://www.news.com.au/sport/motorsport/worlds-fastest-death-cult-the-most-dangerous-race-on-the-planet/news-story/e1a4b17cc4e577ba79737a64da501dbc|title=World's fastest way to die: Motorbike race that's killed 246|newspaper=News.com.au|date=2 July 2015}}{{cite web |url=http://www.thedrive.com/accelerator/11259/2-riders-killed-in-separate-incidents-at-2017-isle-of-man-tt|last=Brown |first=Aaron |title=3 Riders Killed in Separate Incidents at 2017 Isle Of Man TT| publisher=The Drive|access-date=13 June 2017|date=7 June 2017 }} In 2016, 5 riders died on the course during official practices or races.{{Citation |title= ISLE OF MAN |last= Backus |first=Richard |magazine=Motorcycle Classics |pages= 50–56 |date=March–April 2017 }}{{cite news |url=https://www.telegraph.co.uk/news/2016/06/11/two-more-motorcyclists-killed-at-isle-of-man-tt-races/// |archive-url=https://ghostarchive.org/archive/20220112/https://www.telegraph.co.uk/news/2016/06/11/two-more-motorcyclists-killed-at-isle-of-man-tt-races/// |archive-date=12 January 2022 |url-access=subscription |url-status=live|title=Two more motorcyclists killed at Isle of Man TT races| newspaper=The Telegraph |access-date=20 February 2017|date=11 June 2016}}{{cbignore}}{{cite news |url=https://ultimatemotorcycling.com/2016/06/13/2016-isle-of-man-tt-recap-winners-fatalities///|last=Lieback |first=Ron |title=2016 Isle of Man TT Recap – Winners & Fatalities| newspaper=Ultimate MotorCycling|access-date=7 February 2017|date=13 June 2016 }} There were six fatalities among competitors in the 1970 and 2022 Isle of Man TTs, making them the two deadliest years in the history of the event.{{cite news |url=http://www.news.com.au/sport/motorsport/worlds-fastest-death-cult-the-most-dangerous-race-on-the-planet/news-story/e1a4b17cc4e577ba79737a64da501dbc |title=World's fastest way to die: The most dangerous race on the planet |publisher=news.com.au |access-date=20 February 2017 }}{{cite news |url=http://www.express.co.uk/news/world/679077/Two-deaths-Isle-of-Man-TT-Festival-five-toll |title=Two more deaths take Isle of Man TT Festival toll to five |publisher=express.co.uk |access-date=20 February 2017 }}{{Cite news |title=After deadliest year, how do you make 2023 Isle of Man TT safer? |language=en-GB |work=BBC Sport |url=https://www.bbc.com/sport/northern-ireland/65725502 |access-date=2023-11-21}}

File:Sarah's Cottage 2009 uphill.JPG past Sarah's Cottage in reverse direction to a normal race after a red flag caused by a competitor's crash in 2009]]

On 30 May 2018, an experienced TT rider, Steve Mercer,[https://www.iomtt.com/tt-database/events/races?meet_code=ALL&ride_id=9863 Race results, Steve Mercer] iomtt.com Retrieved 25 January 2020[https://www.autosport.com/tt/news/142853/tt-outlines-changes-after-course-car-incident Isle of Man TT outlines changes after Mercer course car collision] Autosport, 18 April 2019, Retrieved 26 January 2020 was seriously injured during a head-on collision with an official Course Car at Ballacrye. The car, being driven at high speed,[https://www.bbc.co.uk/sport/motorsport/46454504 Isle of Man TT 2018: Injured Steve Mercer thanks fans for support] BBC News, 5 December 2018. Retrieved 26 January 2020 was conveying police officers to officiate at the scene of a fatality involving Dan Kneen. Mercer was unconscious for five days and hospitalised for five months due to multiple injuries. He was one of seven riders who had been halted on the course and turned back by marshals, being instructed to proceed back to the TT Grandstand area in the reverse direction after the red flag stoppage.[https://www.newsletter.co.uk/sport/motorcycling/stricken-isle-of-man-tt-racer-steve-mercer-says-it-can-t-end-like-this-1-8884236 Stricken Isle of Man TT racer Steve Mercer says 'it can't end like this'] Belfast Newsletter, 9 April 2019. Retrieved 26 January 2020[https://www.bikesportnews.com/news/news-detail/mercer-crash-report-still-unavailable-one-year-on Mercer crash report still unavailable one year on] bikesportnews, 10 June 2019. Retrieved 26 January 2020 Immediately after the accident the organisers changed their protocols, requiring that returning riders must be controlled by motorcycle-mounted travelling marshals to the front and rear.{{cite news|url=http://www.iomtoday.co.im/article.cfm?id=41016&headline=What%20we%20know%20so%20far%20about%20Mercer%27s%20crash§ionIs=news&searchyear=2018|first=Adrian|last=Derbyshire|title=What we know so far about Mercer's crash|date=6 June 2018|access-date=26 January 2020|work=Isle of Man Today|publisher=Tindle Newspapers Ltd|archive-date=25 February 2021|archive-url=https://web.archive.org/web/20210225030111/http://www.iomtoday.co.im/article.cfm?id=41016&headline=What%20we%20know%20so%20far%20about%20Mercer%27s%20crash§ionIs=news&searchyear=2018|url-status=dead}}{{cite news|url=https://www.iomtoday.co.im/news/red-flag-procedure-with-immediate-effect-221749|author=|title=Red flag procedure with immediate effect|date=31 May 2018|work=Isle of Man Today}} An independent inquiry into the circumstances was arranged by ACU Events, the event organisers.{{cite news|url=http://www.newsletter.co.uk/sport/motorcycling/tt-2018-ex-motorsport-association-chief-will-lead-independent-inquiry-into-steve-mercer-incident-1-8537960|title=TT 2018: Ex-Motorsport Association chief will lead independent inquiry into Steve Mercer incident|first=Kyle|last=White|work=The News Letter|date=19 June 2018}}

The Auto-Cycle Union, the Isle of Man Department for Enterprise, and the inquiry report author, lawyer Rob Jones, a former chief executive of the Motor Sports Association, all refused to release the report as it was confidential and privately owned by the ACU.[https://www.bbc.co.uk/news/world-europe-isle-of-man-46467588 TT organisers refuse to reveal contents of serious crash investigation] BBC News, 7 December 2018. Retrieved 26 January 2020[https://www.newsletter.co.uk/sport/motorcycling/steve-mercer-denied-access-to-official-report-into-head-on-collision-at-isle-of-man-tt-1-8875467 Steve Mercer denied access to official report into head-on collision at Isle of Man TT] Belfast Newsletter, 11 April 2019. Retrieved 26 January 2020[http://www.iomtoday.co.im/article.cfm?id=47676&headline=They%20won%27t%20even%20tell%20Mercer%20what%20went%20wrong§ionIs=news&searchyear=2019 They won't even tell Mercer what went wrong] {{Webarchive|url=https://web.archive.org/web/20210225195554/http://www.iomtoday.co.im/article.cfm?id=47676&headline=They%20won%27t%20even%20tell%20Mercer%20what%20went%20wrong§ionIs=news&searchyear=2019 |date=25 February 2021 }} iomtoday, 5 April 2019. Retrieved 26 January 2020

The ACU admitted liability for the accident, but instructed that any legal claim for compensation by Mercer must be filed in the Isle of Man. The ACU stated that Mercer was receiving financial assistance through its "extensive insurance arrangements".[https://www.newsletter.co.uk/sport/motorcycling/steve-mercer-s-compensation-claim-in-wake-of-tt-course-car-crash-must-be-heard-in-isle-of-man-1-9053069 Steve Mercer's compensation claim in wake of TT course car crash 'must be heard in Isle of Man'] Belfast Newsletter, 29 August 2019. Retrieved 26 January 2020[https://www.acu.org.uk/News/2019/04/ACU-TT-Statement/ ACU TT Statement] Auto Cycle Union, 18 April 2019. Retrieved 26 January 2020

In 2019, it was reported that the driver of the car in the collision had quit after criticism that he exceeded a newly introduced speed limit recorded by a GPS tracking device when he drove to attend a fatality involving Chris Swallow at Ballaugh in August's Senior Classic TT. Gary Thompson, Clerk of the Course and an ACU employee, had been criticised in 2018 for also fulfilling the role of Safety Officer; consequently a new incumbent was in place for 2019.[https://www.bikesportnews.com/news/news-detail/tt-bosses-outline-safety-changes-following-mercer-crash TT bosses outline safety changes following Mercer crash] bikesportnews, 18 April 2019 Retrieved 27 January 2020[http://www.iomtoday.co.im/article.cfm?id=50633&headline=ACU%20official%20stands%20down%20in%20tracker%20row§ionIs=news&searchyear=2019 ACU official stands down in tracker row] {{Webarchive|url=https://web.archive.org/web/20210225123034/http://www.iomtoday.co.im/article.cfm?id=50633&headline=ACU%20official%20stands%20down%20in%20tracker%20row§ionIs=news&searchyear=2019 |date=25 February 2021 }} iomtoday.co.im, 6 September 2019. Retrieved 27 January 2020

From 1915 to 1919, and 1940 to 1946, no TT events took place, due to the outbreak of World Wars I and II.{{cite web| url = https://www.iomtt.com/tt-database/events?meet_code=TT01%20%20&era=#:~:text=TT%202001,%2D1918%20and%201939%20%2D%201945.| url-status = dead| archive-url = https://web.archive.org/web/20210416044158/https://www.iomtt.com/tt-database/events?meet_code=TT01%20%20&era=| archive-date = 2021-04-16| title = Meetings - iomtt.com: The World's #1 TT Website}} Events continued from 1920 to 1939 and 1947 to 2000.

Since TT 1947, the Isle of Man TT has only been cancelled three times: 2001, 2020 and 2021, all of which were due to viral outbreaks.

The 2001 Isle of Man TT races were cancelled because of the outbreak of foot-and-mouth disease in the UK in the spring and summer of 2001. Disinfecting 40,000 spectators and competitors (and their motorcycles) to ensure the disease was kept off the island proved difficult.

In March 2020, the Isle of Man Government announced the cancellation of the 2020 TT due to the ongoing COVID-19 pandemic.{{cite web| url = https://www.iomtt.com/news/2020/03/16/tt-2020-cancelled| url-status = dead| archive-url = https://web.archive.org/web/20200316235253/https://www.iomtt.com/news/2020/03/16/tt-2020-cancelled| archive-date = 2020-03-16| title = Isle of Man Government announce cancellation of 2020 TT Races - iomtt.com: The World's #1 TT Website}} The Classic TT was subsequently cancelled in May,{{cite web| url = https://www.iomtt.com/news/2020/05/04/classic-tt-2020-cancelled| url-status = dead| archive-url = https://web.archive.org/web/20200815014234/https://www.iomtt.com/news/2020/05/04/classic-tt-2020-cancelled| archive-date = 2020-08-15| title = Classic TT 2020 cancelled - iomtt.com: The World's #1 TT Website}} and in December 2020, it was announced that 2021's TT races would also not go ahead, due to the continued worldwide spread of the virus.{{cite web| url = https://www.iomtt.com/news/2020/12/04/tt-2021-cancellation| url-status = dead| archive-url = https://web.archive.org/web/20201204191947/https://www.iomtt.com/news/2020/12/04/tt-2021-cancellation| archive-date = 2020-12-04| title = IOM Government statement: TT 2021 cancellation - iomtt.com: The World's #1 TT Website}} In 2020, the Isle of Man Government lost an estimated £4.8 million of its annual projected revenue due to the cancellation of the TT races.[https://www.independent.co.uk/sport/motor-racing/isle-man-tt-2020-cancelled-coronavirus-cost-a9441166.html The true cost of cancelling the Isle of Man TT goes far beyond losing racing's ultimate adrenaline rush] The Independent, 2 April 2020. Retrieved 23 April 2021

The event returned in 2022 after a two-year absence.{{cite web| url = https://www.iomtt.com/news/2021/03/04/tt-2022| url-status = dead| archive-url = https://web.archive.org/web/20210304153727/https://www.iomtt.com/news/2021/03/04/tt-2022| archive-date = 2021-03-04| title = Provisional TT 2022 schedule confirmed - iomtt.com: The World's #1 TT Website}}

Updated in June 2025{{Cite web |title=Database |url=https://www.iomttraces.com/racing/page/database/ |access-date=2023-08-30 |website=www.iomttraces.com |language=en}}

{{reflist|group=Note|refs=

Erroneously listed as having 12 wins on the official TT database

Erroneously listed as having 4 wins on the official TT database

}}

{{Infobox motor race

|Race title = Isle of Man TT

|Track map = 200px

|Series long = Grand Prix motorcycle racing

|Venue = Snaefell Mountain Course (1949–1976)

|First race = 1949

|Last race = 1976

|Most wins rider = Mike Hailwood (12)

|Most wins manufacturer = MV Agusta (33)

}}

The Isle of Man TT was part of the FIM Motorcycle Grand Prix World Championship (now MotoGP) between 1949 and 1976. During this period the Isle of Man TT Races counted as the United Kingdom round including the Sidecar TT, 50 cc Ultra-Lightweight TT, 125 cc Lightweight TT, 250 cc Lightweight TT, 350 cc Junior TT and 500 cc Senior TT races counted towards the FIM Motor-Cycle Grand Prix World Championship.

After the 1972 races, multiple world champion, 10-time TT race winner and dominant motorcycle racer of his time Giacomo Agostini announced he would never race again at the Isle of Man, declaring it too dangerous for international competition and that it was outrageous that such a race should ever be part of a scenario professional riders were forced into; at this point the Isle of Man TT was not suited to the growing professionalism and business aspects of Grand Prix motorcycle racing. More and more riders joined his boycott, and after 1976 the race was struck from the championship and replaced by the British Grand Prix.

Most Meritorious Female Competitor – The Susan Jenness Trophy, named after Susan Jenness in memory of loosing her life some years ago whilst marshalling a UK off-road event, was awarded yearly by the Executive Committee of the TT Supporters' Club, in recognition of the "most meritorious performance by a female competitor" during the previous TT meeting. The award has not been awarded since 2019.

:::

There have been numerous video games based on the Isle of Man TT; the first was the 1995 Sega arcade game Manx TT Super Bike, which was later ported to the Sega Saturn in 1997.{{Cite web|url=https://www.gamespot.com/reviews/manx-tt-super-bike-review/1900-2532882/|title = Manx TT Super Bike Review}} Several other games have followed since, including Suzuki TT Superbikes (2005), TT Superbikes: Real Road Racing Championship and TT Superbikes Legends (both 2008), all of which were released exclusively for the PlayStation 2, and developed by Jester Interactive.

Bigben Interactive has since revived the TT game license, releasing TT Isle Of Man: Ride on the Edge in 2018 and two sequels in 2020 and 2023.{{Cite web|url=https://www.forbes.com/sites/mattgardner1/2020/03/17/review-tt-isle-of-manride-on-the-edge-2-is-your-ticket-to-the-race-canceled-by-coronavirus/|title = Review: 'TT Isle of Man–Ride on the Edge 2' is Your Ticket to the Race Canceled by Coronavirus|website = Forbes}}{{Cite web|url=https://www.rideapart.com/news/245144/the-isle-of-man-tt-is-coming-to-your-game-room/|title = The Isle of Man TT is Coming to Your Game Room}}{{Cite web |last=Noah |first=Steve |date=2023-04-28 |title=TT Isle of Man: Ride on the Edge 3 Video - Davey Todd Shares His Experience |url=https://www.operationsports.com/tt-isle-of-man-ride-on-the-edge-3-video-davey-todd-shares-his-experience/ |access-date=2023-08-29 |website=Operation Sports |language=en-US}}

The Ramsey Sprint has been run since 1978 and is one of the biggest events during the TT race festival. The Sprint is run along the 1 km long Mooragh Promenade. The music festival Sprintfest is also held in the same town, Ramsey, on the weekend between practice week and race week.

• List of named corners of the Snaefell Mountain Course
• List of Isle of Man TT Mountain Course fatalities
• North West 200
• Outline of motorcycles and motorcycling

File:Parliament Square Ramsey memorial with bibbed photographers.jpg on a race day in 2008]]

{{Reflist|30em}}

• Barker, Stuart (2007). 100 One Hundred Years of the TT. EMAP {{ISBN|1-84605-235-1}}
• Duckworth, Mick (2007). TT 100 – The Authorised History of the Isle of Man Tourist Trophy Racing. Lily Publications {{ISBN|9781899602674}}
• Harris, Nick (1991). Motocourse History of the Isle of Man Tourist Trophy Races 1907–1989 Hazelton Publishing {{ISBN|0-905138-71-6}}
• Mac McDiarmid (2004). The Magic of The TT. A Century of Racing over The Mountain Haynes Publishing. {{ISBN|1-84425-002-4}}
• Noyes, Denis (1999) 50 Years of Moto Grand Prix. Hazelton Publishing Ltd {{ISBN|1-874557-83-7}}
• Pidcock, Fred & Snelling, Bill (2007) History of the Isle of Man Clubman's TT Races 1947–1956. Amulree Publications {{ISBN|1-901508-10-2}}
• Savage, Mike (1997) TT Heroes. Amulree Publications {{ISBN|0-9521126-9-8}}
• Snelling, Bill (1996). The Tourist Trophy in Old Photographs Collected by Bill Snelling. Sutton Publishing {{ISBN|1-84015-059-9}}
• Stroud, Jon (2007). The Little Book of the TT. Green Umbrella Publishing {{ISBN|1-905828-24-1}}
• Wright, David (2007). 100 Years of the Isle of Man TT Races. A Century of Motorcycle Racing. Crowood Press {{ISBN|1-86126-906-4}}
• Wright, David (2006). TT Topics and Tales. Amulree Publications {{ISBN|1-901508-09-9}}

{{Commons category}}

• {{official website|https://www.iomttraces.com/}} by IoM Department for Enterprise
• [http://maps.google.co.uk/maps?f=d&saddr=A2%2FGlencrutchery+Rd&daddr=A3+to:Ramsey,+Isle+of+Man+to:A2%2FGlencrutchery+Rd&hl=en&geocode=FcKJOgMduqu7_w%3BFWBDOwMdnk65_w%3B%3BFeCJOgMd-qu7_w&mra=ls&sll=54.302941,-4.394403&sspn=0.007412,0.016565&ie=UTF8&z=11&lci=lmc:wikipedia_en Route of Isle of Man TT] (Google Maps)

{{Isle of Man TT}}

{{Mountain Course}}

{{MotoGP races}}

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Category:1907 establishments in the Isle of Man

Category:Recurring sporting events established in 1907

Category:Summer in the Isle of Man

Category:Annual sporting events in the United Kingdom