Trunk roads in Ireland

|(Belfast)

|Dublin – Swords – Balbriggan – Drogheda – Dunleer – Dundalk – border – (to Belfast via A1)

|N1

|(Derry)

|Dublin – Ashbourne – Slane – Collon – Ardee – Carrickmacross – Castleblayney – Monaghan – Emyvale – border – (to Derry via A5)

|N2

|Sligo

|Dublin – Lucan – Leixlip – Maynooth – Kilcock – Enfield – Kinnegad – Mullingar – Edgeworthstown – Longford – Roosky – Dromod – Carrick-on-Shannon – Boyle – Collooney – Sligo

|N4

|(Dublin)

|Galway

|(Dublin) – Kinnegad – Rochfortbridge – Kilbeggan – Moate – Athlone – Ballinasloe (multiplex with T31) – Kilconnell – Kiltullagh – Athenry – Derrydonnell – Oranmore – Galway

|N6
R348

T4a

|Ballinasloe

|Loughrea

|(Dublin) – Ballinasloe – Garbally – Aughrim – Kilreekill – Kilmeen – Loughrea (multiplex with T21)

|N6

|Dublin – Naas – Newbridge – Kildare – Monasterevin – Portlaoise – Mountrath – Borris-in-Ossory – Roscrea – Nenagh – Lisnagry – Limerick

|N7

|(Dublin)

|(Dublin) – Naas – Kilcullen – Athy – Castlecomer – Henebry's Cross – Kilkenny (multiplex with T14) – Callan – Ninemilehouse – Kilheffernan – Clonmel – Cahir (multiplex with T13) – Kilbehenny – Mitchelstown – Moorepark – Fermoy – Rathcormac – Watergrasshill – Glanmire – Cork

|N9
N78
N77
N76
N24
N8

|Dublin – Stillorgan – nr St. Colmcille's Hospital, Loughlinstown – nr Shankill – Fassaroe – Newtownmountkennedy – Rathnew – Rathdrum – Avoca – Woodenbridge – Arklow – Gorey – Ferns – Enniscorthy – New Ross – Waterford (multiplex with T12)

|N11
R752
R747
N79 (now N30)
N25

|Enniscorthy

|Rosslare

|(Dublin) – Enniscorthy – Oylgate – Ferrycarrig Bridge – Wexford – Blackhorse – Killinick – Rosslare

|N11
N25

|Cahir

|Dundalk – Ardee – Kells – Delvin – Mullingar – Kilbeggan – Tullamore – Ballard – Cadamstown – Kinnitty – Boheraphuca – Ballybritt – Roscrea – Templemore – Thurles – Holycross – Cashel – Cahir – (to Cork via T6)

|N52
R421
N62
R660
N8

T10

|(Enniskillen)

|Mullingar

|('from Enniskillen) – Wattle Bridge – border – Cloverhill – Butlersbridge – Cavan (multiplex with T35 & T15) – Ballinagh (or Bellananagh) – nr Kilcogy (multiplex with T15) – Finnea – Castlepollard – Mullingar

|N54
N3
N55
R394

T11

|(Sligo)

|Cork – Mallow – Buttevant – Charleville – Croom – Patrickswell – Limerick – Bunratty – Hurler's Cross – Newmarket on Fergus – Ennis – Crusheen – Gort – Coole – Lydican – Drumharsna – Owenbristy – Kiltiernan – Kilcolgan – Clarinbridge – Oranmore – Galway (multiplex with T4) – Claregalway – Tuam – Dunmore – Cloonfad – Ballyhaunis – Tawnyinah – Charlestown – Tubbercurry – Collooney – joined T3 to Sligo

|N20
N18
N6
N17

T11a

|Dunmore

|Ballymoe

|Dunmore – Williamstown – Ballymoe

|R360

T12

|Wexford

|Cork – Dunkettle – Carrigtwohill – Midleton – Castlemartyr – Killeagh – Youghal – Dungarvan – Joulterspark – Lemybrien – Kilmeaden – Waterford – New Ross (multiplex with T7) – Wexford

|N25

T12a

|(Cork)

|Cobh

|(Cork) – Cobh Cross – Cobh

|R624

T13

|Limerick – Tipperary – Bansha – Cahir – Clonmel – Kilheffernan (multiplex with T6) – Carrick on Suir – Mooncoin – Waterford

|N24

T14

|Tullamore

| Waterford – Mullinavat – Ballyhale – Knocktopher – Stoneyford – Kilkenny – Henebry's Cross (multiplex with T6) – Ballyragget – Ballinakill – Abbeyleix – Portlaoise – Mountmellick – Tullamore

|N9
N10
N77
R432
N8
N80

T15

|(Galway)

|(Monaghan)

|(Galway) – Roouanmore – Lackagh – Turloughmore – Moylough – Mountbellew – Athleague – Roscommon – Lanesborough – Longford – Ballinalee – Granard – nr Kilcogy – Ballinagh (or Bellananagh) – Cavan (multiplex with T10) – Butlersbridge – Leggykelly (multiplex with T10-T35) – border – A3 – County Fermanagh – border – re-entered County Cavan – border (Derrynure) – A3 – County Fermanagh – border – entered County Monaghan – Clones – Smithborough – Monaghan – border (Tamlat) – (to Armagh via A3)

|N63
R194
N55
N3
N54
N12

T16

|(Enniscorthy)

|Portlaoise

|(Enniscorthy) – Ballynahallin – Bunclody – Ballon – Carlow – Ballickmoyler – Arless – Stradbally – Portlaoise

|N80

T17

|Sligo

|(Enniskillen)

|Sligo – Manorhamilton – Blacklion – border – (to Enniskillen and Belfast via A4 and, later, NI's M1)

|N16

T18

|Sligo

|(Derry)

|Sligo- Grange – Drumcliffe – Bundoran – Ballyshannon – Donegal – Ballybofey – Stranorlar – Killygordon – Castlefin – Cloghfin – border – Clady – (to Strabane and Derry via B85 and A5)

|N15

T19

|Kilkenny

|Kilkenny – Freshford – Urlingford – Turnpike (multiplex with T36) – Thurles – Toor (multiplex with T21) – Ballycahill – Rosmult – Milestone – Inch – Anglesey Bridge – Rear Cros – Newport – Lisnagry – (to Limerick via T5)

|R693
N8
N75
R498
R503

T20

|Kilkenny

|New Ross

|Kilkenny – Bennettsbridge – Thomastown – Inistioge – New Ross

|R700

T21

|Thurles

|(Galway)

|Thurles – Toor (multiplex with T19) – Borrisoleigh – Nenagh – Borrisokane – Portumna – Killimor – Ballydavid – Killmeen – Loughrea (multiplex with T4a) – Craughwell – Derrydonnell (to Galway via T4)

|R498
N52
N65
N6

T21a

|Borrisokane

|Moneygall

|Borrisokane – Cloughjordan – Moneygall

|R490

T22

|Castleblayney

|Dundalk – border – A37 – Cullaville – border – re-entered County Monaghan – Castleblayney

|N53

T23

|(Armagh)

|Dundalk – Kilcurry – border – (to Newtownhamilton, Keady and Armagh via A29)

|R177

T24

|Granard

|Dundalk – Chanonrock – Carrickmacross – Corvally – Shercock – Bailieborough – Virginia – Ballyjamesduff – Ballymachugh – nr Finnea – Granard

|R178
R194

T25

|(Drogheda)

|Collon

|(Drogheda) – Collon

|R168

T26

|Drogheda

|Kinnegad

|Drogheda – Slane – Navan – Bective Abbey – Trim – Kinnegad

|N51
R161

T27

|(Youghal)

|Clonmel

|(Youghal) – Kinsalebeg – Clashmore – Modeligo – Halfwayhouse Inn – Ballymacarbry – Clonmel

|R671

T28

|Tralee

|(Limerick) – Patrickswell – Adare – Rathkeale – Newcastle West – Abbeyfeale (multiplex with T36) – Castleisland – Caherbreagh – Tralee

|N21

T28a

|Castleisland

|Farranfore

|Castleisland – Farranfore

|N23

T29

|(Tralee)

|(Tralee) – Caherbreagh – Farranfore – Killarney – Ballyvourney – Macroom – Coachford – Carrigrohane – Cork

|N22
R618

T30

|(Dungarvan)

|(Killarney)

|(Dungarvan) – Joulterspark – Cappoquin – nr Lismore – Ballyduff – Fermoy – Castletownroche – Mallow – Rathmore – Clasheen – (to Killarney via T29)

|N72
R666

T31

|Portumna

|Granard

|Portumna – Ballinasloe – Athlone (multiplex with T4) – Ballymahon – Edgeworthstown – Granard

|R355
N6
N55

T32

|Roscrea

|(Athlone)

|Roscrea – Birr – Cloghan – Ferbane – Fardrum – (to Athlone via T4)

|N62

T33

|Birr

|Borrisokane

|Birr – Ballingarry – Borrisokane

|N52

T34

|Athlone

|Boyle

|Athlone – Roscommon – Tulsk – Boyle

|N61

T35

|(Donegal)

|Dublin – Clonee – Dunshaughlin – Navan – Kells – Virginia – Cavan – Butlersbridge – Cloverhill – border – (multiplex with T10-T15) – A3 – Wattle Bridge – A34 – Newtownbutler – Lisnaskea – Tamlaght – A4 – Enniskillen – A32 – Irvinestown – A35 – Kesh – border – Pettigo – Laghey – (to Donegal via T18)

|N3
N54
R232

T36

|Abbeyleix

|Listowel

|Abbeyleix – Durrow – Cullahill – Urlingford – Turnpike (multiplex with T19) – Horse and Jockey – Cashel – Golden – Tipperary – Emly – Kilmallock – Charleville – Drumcolliher – Feohanagh – Newcastle West – Abbeyfeale (multiplex with T28) – Duagh – Listowel

|N8
N74
R515
R522
N21
R555

T37

|Cashel

|(Kilkenny)

|Cashel – Dually – Ballinure – Laffansbridge – Killenaule – Ballingarry – Ballyline – Ballymack – (to Kilkenny via T6)

|R691

T38

|Mitchelstown

|Mallow

|Mitchelstown – Kildorrery – Mallow

|N73

T39

|Roscommon

|Louisburgh

|Roscommon – Ballymoe – Castlerea – Ballyhaunis – Claremorris – Balla – Castlebar – Westport – Louisburgh

|N60
N5
R335

T40

|(Sligo)

|Galway

|(Sligo) – Ballysadare – Beltra – Dromore West – Easky – Rathlee – Kilglass – Enniscrone – Corraun – Ballina – Foxford – Strade – Bellavary – Castlebar – Ballintubber – Partry – Ballinrobe – Kilmaine – Shrule – Headford – Galway

|N59
R297
N57 (now N26)
N58
N5
N84

T41

|Enfield

|Kilrush

|(Dublin) – Enfield – Edenderry – Daingean – Ballinagar – Clonmore – Cappincur – Tullamore – Screggan – Blue Ball – Kilcormac – Birr – Riverstown – Pike – Portland – Portumna – Power's Cross – Gorteeny – Mountshannon – Scariff – Tuamgraney – Bodyke – Moymore – Spancil Hill – Ennis – Darragh – Caherea – Lissycasey – Knockalough – Kilrush

|R402
N52
R489
N65
R352
N68

T42

|Clash

|Dublin – Templeogue – Tallaght – Brittas – Blessington – Baltinglass – Rathvilly – Tullow – Clash – (joined T16)

|N81

T43

|(Bray)

|Dublin – Milltown – Windy Arbour – Dundrum – Sandyford – Stepaside – Kiltiernan – Enniskerry – Fassaroe – (Bray)

|R117

T44

|(Shankill)

|Dublin – Ballsbridge – Merrion – Booterstown – Blackrock – Monkstown – Dún Laoghaire – Dalkey – Killiney – (Shankill) – (to Bray via T7)

|R118
N31
R119

T45

|Clones

|(Newry)

|Clones – Killeevan – Newbliss – Ballybay – Castleblayney – Milltown – border – (to Newtownhamilton and Newry via A25)

|R183
R182

T46

|Carrickmacross

|Ballybay

|Carrickmacross – Ballybay

|R180

T47

|Tullamore

|(Athlone)

|Tullamore – Clara – Moate – (to Athlone via T4)

|N80

T48

|Durrow

|(Borris-in-Ossory)

|Durrow – Ballycolla – Aghaboe – Sentry Hill – (to Borris in Ossory and Roscrea via T5)

|R434

T49

|Cashel

|Clonmel

|Cashel – Rosegreen – Ballyclerahan – Clonmel

|R688

T50

|Mitchelstown

|Mitchelstown – Ballylanders – Knocklong – Hospital – Herbertstown (multiplexed with T57) – Caherconlish – Beary's Cross – (to Limerick via T13)

|R513

T50a

|Kilmallock

|Kilmallock – Bruff – Holy Cross – nr Ballybricken – (to Limerick via T57)

|R512

T51

|Kilcullen

|Kilkenny

|(Dublin – Naas) – Kilcullen – Timolin – Moone – Castledermot – Carlow – Leighlinbridge – Paulstown – Kilkenny

|N9
N10

T52

|(Drumsna)

|Belturbet

|(Drumsna) – Annaduff – Mohill – Cloone Grange – Carrigallen – Killeshandra – Milltown Abbey – Lisnamaine – Kilconney – Belturbet – Sugarloaf – Gannons Cross – joined T10-T35 multiplex

|R201
R200 (now N87)
R197

T53

|Dromod

|Swanlinbar

|Dromod – Mohill – Garvagh – Fenagh – Ballinamore – Gortmore – Swanlinbar – border – (to Enniskillen via A32 and A4)

|R202

T54

|Carrick on Shannon

|Bundoran

|Carrick on Shannon – Leitrim – Drumgorman – Drumshanbo – Tarmon – Drumkeeran – Killarga – Manorhamilton – Glenade – Kinlough – Bundoran

|R280

T55

|(Carrick on Shannon)

|Fenagh

|(Carrick on Shannon) – Drumheckil – Keshcarrigan – Fenagh – joined T53

|R209

T56

|Carrick on Suir

|(Kilkenny)

|Carrick on Suir – Ballinacluna – (Kilkenny via T6)

|R696

T57

|Emly

|Limerick – Ballyneety – nr Ballybricken – Mohane – Herbertstown – Hospital (multiplexed with T50) – Emly (joined T36)

|R512
R514
R513
R516

T58

|Ballina

|Belmullet

|Ballina – Crossmolina – Bellacorick – Bangor Erris – Bunnahowen – Belmullet

|N59
R313

T59

|Stranorlar

|(Derry)

|Stranorlar – Kilross – Letterkenny – Manorcunningham – Newtown Cunningham – Speenoge – Bridge End – border – (to Derry via A2)

|N56 (now N13)
N13

T60

|(Letterkenny)

|Lifford

|(Letterkenny) – nr Corkey – Lifford – border – A38 – Strabane – (to Derry and Dublin via A5)

|N14

T61

|(Bray)

|Rathdrum

|(Bray) – Kilmacanogue – Killough – Roundwood – Annamoe – Laragh – Rathdrum

|R755

T62

|(Dundalk)

|(Omeath)

|(Dundalk) – Ballymascanlan – The Bush – Carlingford – Omeath – Cornamucklagh – border – (to Newry via B79)

|R173

T63

|Dungarvan

|Waterford – Tramore – Annestown – Knockmahon – Bunmahon – Stradbally – Dungarvan

|R675

T64

|Macroom

|(Bantry)

|Macroom – Kilbarry – Inchigeelagh – Ballingeary – Kealkill – Ballylickey – (to Bantry via T65)

|R584

T65

|Killarney

|Killarney – Kenmare – Glengarriff – Bantry – Scart – Aghaville – Drimoleague – Dunmanway – Enniskeane – Bandon – Inishannon – Halfway – Cork

|N71
R586

T66

|Tralee

|Kenmare

|Tralee – Castlemaine – Killorglin – Glenbeigh – Cahirciveen – Waterville – Caherdaniel – Sneem – Parknasilla – Kenmare (part of Ring of Kerry route)

|N70

T67

|Killorglin

|Killarney

|Killorglin – Killarney (part of Ring of Kerry route)

|N72

T68