March 3 – 5, 2023
Thunderhill Raceway Park – Willows, CA
Group 1 3 4 Qualifying Race
Group 1 3 4 Practice
Group 1 3 4 Practice 2
Group 1 3 4 Feature Race
Group 2 9 Exclusive Practice 1
Group 2 9 Practice 2 – Exclusive Qualifying
Group 2 9 Qualifying Race – Exclusive Feature Race 1
Group 2 9 Feature Race – Exclusive Feature Race 2
Group 6 8 10 12 Practice 1
Group 6 8 10 12 Practice 2
Group 6 8 10 12 Qualifying Race
Group 6 8 10 12 Feature Race