Indianapolis 8 Hour

{{Short description|Prominent International Sportscar Race}}

{{Infobox motor race

|Race title = Indianapolis 8 Hours

|Logo =

|Track map = Image:Indianapolis IndycarGP.svg

|Series long = Intercontinental GT Challenge

|Series short = IGTC

|Venue = Indianapolis Motor Speedway

|Sponsor =

|First race = 2020

|First series race = 2020

|Last race =

|Distance =

|Laps =

|Duration = 8 Hours

|Previous names =

|Most wins driver = Dries Vanthoor (2)
Sheldon van der Linde (2)

|Most wins team = Team WRT (2)

|Most wins manufacturer = BMW (3)

}}

The Indianapolis 8 Hour is an endurance sports car race contested at Indianapolis Motor Speedway using the infield road course, first held in 2020,{{Cite web |title=23 Car Entry For Indianapolis 8 Hour, 13 x GT3 & 10 x GT4 |url=https://www.dailysportscar.com/2020/09/28/23-car-entry-for-indianapolis-8-hour-13-x-gt3-10-x-gt4.html |access-date=2023-01-11 |website=www.dailysportscar.com}} making it the first ever endurance sports car race at this venue.{{Cite web |last=Brown |first=Nathan |title=After IMS hosts its first endurance race, a look at the track's future of hosting 'events that matter around the world' |url=https://www.indystar.com/story/sports/motor/2020/10/06/ims-future-hosting-events-matter-around-world-indycar-nascar-formula-1-imsa/5902310002/ |access-date=2023-01-11 |website=The Indianapolis Star |language=en-US}} The event is the US leg of the Intercontinental GT Challenge (IGTC) and the finale of the GT World Challenge America series.{{Cite web |date=2019-07-27 |title=Intercontinental GT and World Challenge Team to Bring Sports Car Racing Back to Indianapolis |url=https://jalopnik.com/intercontinental-gt-and-world-challenge-team-to-bring-s-1836743433 |access-date=2023-01-11 |website=Jalopnik |language=en}}

The race was originally open to GT3 and GT4 cars. In 2022 the GT4 class was dropped; in addition the race ran into the twilight for the first time; and the GT World Challenge America entrants were awarded points at the full 8 hours rather than at the three-hour mark in previous years.

For the GT World Challenge America drivers, this event is the longest of the races and the only event to include three drivers.

For the cars additionally competing in IGTC, this event differs from the remainder of IGTC, with the maximum number of Gold or Platinum drivers reduced to two.

In 2022 14 cars took part in the IGTC within the total grid of 25 entries running GT World Challenge America.