This is the season opener event of the 8-event 2021 season. Drivers will battle on the fantastic Sonoma circuit before heading off to COTA in 8 weeks time.
| # | Driver | Class | Team | Car# | Car |
|---|---|---|---|---|---|
| 1 | Andrea CALDARELLI / Jordan PEPPER | PRO | K-Pax Racing | 3 | Lamborghini Huracan GT3 |
| 2 | Corey LEWIS / Giovanni VENTURINI | PRO | K-Pax Racing | 6 | Lamborghini Huracan GT3 |
| 3 | Fred POORDAD / Jan HEYLEN | PRO-AM | Wright Motorsports | 20 | Porsche 911 GT3-R (991.ii) |
| # | Driver | Class | Team | Car# | Car |
|---|---|---|---|---|---|
| 1 | Andrea CALDARELLI / Jordan PEPPER | PRO | K-Pax Racing | 3 | Lamborghini Huracan GT3 |
| 2 | Corey LEWIS / Giovanni VENTURINI | PRO | K-Pax Racing | 6 | Lamborghini Huracan GT3 |
| 3 | George KURTZ / Colin BRAUN | PRO-AM | DXDT Racing | 04 | Mercedes AMG GT3 |