Saison 2021
La saison 2021 du championnat américain de voitures de tourisme, type GT4. Elle se déroule du 5 mars au 17 octobre, sur 7 circuits, avec 10 marques automobiles :
* ![](https://static.ostadium.com/assets/ui/country/en.png) Aston Martin
* ![](https://static.ostadium.com/assets/ui/country/de.png) Audi
* ![](https://static.ostadium.com/assets/ui/country/de.png) BMW
* ![](https://static.ostadium.com/assets/ui/country/us.png) Chevrolet
* ![](https://static.ostadium.com/assets/ui/country/us.png) Ford
* ![](https://static.ostadium.com/assets/ui/country/at.png) KTM
* ![](https://static.ostadium.com/assets/ui/country/en.png) McLaren
* ![](https://static.ostadium.com/assets/ui/country/de.png) Mercedes-AMG
* ![](https://static.ostadium.com/assets/ui/country/de.png) Porsche
* ![](https://static.ostadium.com/assets/ui/country/jp.png) Toyota
| Date | Circuit |
|------|---------|
| 5-7 mars | ![](https://static.ostadium.com/assets/ui/country/us.png) [Sonoma](https://www.ostadium.com/stadium/3525/sonoma-raceway) |
| 30 avril-2 mai | ![](https://static.ostadium.com/assets/ui/country/us.png) [Austin](https://www.ostadium.com/stadium/1450/circuit-of-the-americas) |
| 4-6 juin | ![](https://static.ostadium.com/assets/ui/country/us.png) [Virginia](https://www.ostadium.com/stadium/3523/virginia-international-raceway) |
| 27-29 août | ![](https://static.ostadium.com/assets/ui/country/us.png) [Road America](https://www.ostadium.com/stadium/3490/road-america) |
| 17-19 septembre | ![](https://static.ostadium.com/assets/ui/country/us.png) [Glen](https://www.ostadium.com/stadium/3524/watkins-glen-international) |
| 1-3 octobre | ![](https://static.ostadium.com/assets/ui/country/us.png) [Sebring](https://www.ostadium.com/stadium/1455/sebring-international-raceway) |
| 15-17 octobre | ![](https://static.ostadium.com/assets/ui/country/us.png) [Indianapolis](https://www.ostadium.com/stadium/3495/indianapolis-motor-speedway) |
États-Unis
05 mars-17 octobre 2021