3 Mile - Open Test - NASA 12 Hr.

Bring your street car or race car to Thunderhill's 3-mile layout for an open test session as part of the NASA 12-hour event weekend. This is your chance to dial in setup, get comfortable with the track, or just put in some hot laps without race pressure. Perfect for drivers prepping for the endurance race or anyone wanting seat time at one of California's best road courses.

Full details & registration:

https://www.motorsportreg.com/events/3-mile-open-test-thunderhill-raceway-park-409321