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.

h4. Events
[b]Current[/b]
* [[mount panorama circuit|Bathurst 12 Hour]] ([[GT World Challenge Australia|Australia]])
* [[nurburgring|24H Nurburgring]]
* [[circuit de spa-francorchamps|24 Hours of Spa]] ([[GT World Challenge Europe|Europe]])
* Indianapolis 8 Hour ([[GT World Challenge America|America]])

[b]Former[/b]
* Sepang 12 Hours
* [[suzuka international racing course|Suzuka 10 Hours]]
* California 8 Hours (Laguna Seca)
* Kyalami 9 Hours
* [[Yas Marina Circuit|Gulf 12 Hours]]
intercontinental gt challenge