Also known as: IGTC
A motorsports series officiated by SRO, consisting of the most prestigious endurance events in the SRO calendar. Each race is currently considered both part of the IGTC and the corresponding GT World Challenge region, with the exception of the Nurburgring 24 hour race which only became part of the IGTC for the first time in 2024 and is treated as a standalone event.
Events
Current
- Bathurst 12 Hour (Australia)
- 24H Nurburgring
- 24 Hours of Spa (Europe)
- Indianapolis 8 Hour (America)
Former
- Sepang 12 Hours
- Suzuka 10 Hours
- California 8 Hours (Laguna Seca)
- Kyalami 9 Hours
- Gulf 12 Hours