April 22 – 25, 2021
Sonoma Raceway – Sonoma, CA
Group 1 3 4 5b Practice
Group 1 3 4 5b Qualifying 1
Group 1 3 4 5b Qualifying 2
Group 1 3 4 5b Race 1
Group 1 3 4 5b Race 2
Group 2 Practice
Group 2 Qualifying 1
Group 2 Qualifying 2
Group 2 Race 1
Group 2 Race 2
Group 5a 7 9 11 Practice
Group 5a 7 9 11 Qualifying 1
Group 5a 7 9 11 Qualifying 2
Group 5a 7 9 11 Race 1
Group 5a 7 9 11 Race 2
Group 6 12a Practice
Group 6 12a Qualifying 1
Group 6 12a Qualifying 2
Group 6 12a Race 1
Group 6 12a Race 2
Group 8 12b Practice
Group 8 12b Qualifying 1
Group 8 12b Qualifying 2
Group 8 12b Race 1
Group 8 12b Race 2
Group 10 Practice
Group 10 Qualifying 1
Group 10 Qualifying 2
Group 10 Race 1
Group 10 Race 2
Historic Trans Am – Practice
Historic Trans Am – Qualifying 1
Historic Trans Am – Qualifying 2
Historic Trans Am – Race 1
Historic Trans Am – Race 2