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One of America's premier racing facilities, Thunderhill Raceway Park opened on Halloween 1993, built by the SCCA San Francisco Region. Located 7 miles west of I-5 near Willows, CA, it's a favorite among motorcycle track day riders for its flowing layout, significant elevation changes, and challenging corners — including 'The Cyclone,' often compared to Laguna Seca's Corkscrew. The park hosts over 1,000 events per year, including the legendary 25 Hours of Thunderhill endurance race. With two distinct courses and the combined 'Thunderschleife,' riders of all levels find something to challenge them here.
East Course
2.866 mi · 15 turns
The original course. Significant elevation changes with technical corners.
West Course
2 mi · 10 turns
Runs both clockwise and counter-clockwise. Tight and technical.
Thunderschleife (Combined)
4.6 mi · 27 turns
Both courses linked together. Named after the Nordschleife — a true endurance layout.
Fastest known lap times at this track. Data may be incomplete — help us improve it.
8 events
Click on a day with events to see details
Carters@theTrack
11 upcoming events · All levels, A/B+/B- groups
Fun Track Dayz
9 upcoming events · All levels, Novice/Intermediate/Expert
Z2 Track Days
6 upcoming events · All levels, AFM NRS on select dates
Pacific Track Time
15 upcoming events · All levels, A/B/C groups
Volant Vivere
2 upcoming events · Premium/private, A/B 30-min sessions, Jason Pridmore coaching, max 20 riders
California Superbike School
4 upcoming events · Keith Code's riding school, all levels, nationwide (CA/NV/NJ/SC/FL/AL/UT/WA/OH/VA/AZ). BMW S1000RR rentals available
Superbike-Coach
10 upcoming events · Coach Can Akkaya, B+/B/C groups, overnight camping
Yamaha Champions Riding School
1 upcoming event · 2-day ChampSchool ($2995) and 1-day ChampStreet ($595), nationwide