The Indianapolis 8 Hour is an endurance sports car race contested at Indianapolis Motor Speedway using the infield road course, first held in 2020, making it the first ever endurance sports car race at this venue. The event is the US leg of the Intercontinental GT Challenge (IGTC) and the finale of the GT World Challenge America series.
In 2022 the race ran into the twilight for the first time; the rules changed to GT3 only, dropping GT4; 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.
For 2022 the GT World Challenge America element of the event was extended such that the entire 8 hour duration scored points for the GTWC America entrants; in previous years those entrants scored points for the first three hours only.
Additionally for 2022 GT4 classes were dropped from the race making it GT3 only.
|2020|| Nicky Catsburg
Connor De Phillippi
|BMW M6 GT3||Walkenhorst Motorsport||300||Report|||
|2021|| Christopher Haase
|Audi R8 LMS Evo||Audi Sport Team Saintéloc||265[a]||Report|||
|2022|| Daniel Juncadella
|Mercedes-AMG GT3 Evo||Mercedes-AMG Team Craft-Bamboo Racing||328||Report|||
- Due to the kerbing damage in the Turn 5-6 chicane, the 2021 race was run on the SCCA Runoffs layout instead of the INDYCAR Grand Prix layout, which utilised the old Formula One course with the newer Snake Pit section.
- "23 Car Entry For Indianapolis 8 Hour, 13 x GT3 & 10 x GT4 | dailysportscar.com". www.dailysportscar.com. Retrieved 2023-01-11.
- Brown, Nathan. "After IMS hosts its first endurance race, a look at the track's future of hosting 'events that matter around the world'". The Indianapolis Star. Retrieved 2023-01-11.
- "Intercontinental GT and World Challenge Team to Bring Sports Car Racing Back to Indianapolis". Jalopnik. 2019-07-27. Retrieved 2023-01-11.
- Coch, Mat (2019-07-26). "Indianapolis joins Bathurst on IGTC calendar". Speedcafe. Retrieved 2022-10-08.
- "Indianapolis 8 Hour to decide GT World Challenge America Pro-Am". RACER. 2022-10-06. Retrieved 2023-01-11.
- "2020 Indianapolis 8 Hour Race - Classification - Provisional" (PDF). Retrieved 8 October 2022.
- "2021 Indianapolis 8 Hour presented by aws Race - Classification - Provisional - Amended" (PDF). Retrieved 8 October 2022.
- "2022 Indianapolis 8 Hour Race - Classification - Provisional" (PDF). Retrieved 9 October 2022.