2021 / Sonoma Raceway
Entry list
| Car # | Driver 1 | Driver 2 | Team | Car | Class |
|---|---|---|---|---|---|
| 3 | Jordan Pepper | Andrea Caldarelli | KPAX Racing | Lamborghini Huracan GT3 | Pro |
| 04 | George Kurtz | Colin Braun | DXDT Racing | Mercedes - AMG GT3 | Pro-Am |
| 6 | Corey Lewis | Giovanni Venturini | KPAX Racing | Lamborghini Huracan GT3 | Pro |
| 9 | Ziad Ghandour | Giacomo Altoe' | TR3 Racing | Lamborghini Huracan GT3 | Pro-Am |
| 12 | Frank Gannett | Drew Staveley | Ian Lacy Racing | Aston Martin Vantage AMR GT3 | Pro-Am |
| 19 | Erin Vogel | Michael Cooper | DXDT Racing | Mercedes - AMG GT3 | Pro-Am |
| 20 | Fred Poordad | Jan Heylen | Wright Motorsports | Porsche 911 GT3-R (991.ii) | Pro-Am |
| 33 | Russell Ward | Philip Ellis | Winward Racing | Mercedes - AMG GT3 | Pro |
| 61 | Jean-Claude Saada | Conrad Grunewald | AF Corse | Ferrari 488 GT3 | Am |
| 63 | David Askew | Ryan Dalziel | DXDT Racing | Mercedes - AMG GT3 | Pro-Am |
| 77 | Rodrigo Sales | Matt McMurry | Compass Racing | Acura NSX GT3 | Pro-Am |
| 91 | Jeff Burton | Vesko Kozarov | Rearden Racing | Lamborghini Huracan GT3 | Pro-Am |
| 93 | Taylor Hagler | Dakota Dickerson | Racers Edge Motorsports | Acura NSX GT3 | Pro-Am |
| 96 | Michael Dinan | Robby Foley | Turner Motorsport | BMW F13 M6 GT3 | Pro |