Fri, Mar 5 - Sun, Mar 7, 2027

The Thunderhill Open

Thunderhill Raceway Park

About this event


 

 The Thunderhill Open Returns! 

The Open is a celebration of everything modern grassroots track culture — club racing, drifting, time attack, food, vendors, games, live stream, and evening hangs. It’s kind of a golf spoof too, so no trophies, but the now coveted Green Blazers will be awarded to the winners. Some other golf jokes too, probably.

We are thrilled to include Global Time Attack into the Thunderhill Open - The friday test day registration happens here, but GTA competition registration information can be found here: Global Time Attack

Road Racing Classes - Road Racing Schedules and Tech forms can be found here: 

DRIVER DOCUMENT FOLDER

Non-Traditional Class Collections 

We’re doing something a little different. Instead of housing, operating, and policing seven rulesets (including drift) that each have their own cultures and quirks, we figured it’s a better experience for everyone if we just go straight to the experts. 

We’ve partnered with race groups directly — but separately — so these group leads will be in charge of rulesets, tech, and pre-event questions specific to their class. 

Group 1 – Western Touring Car Championship - team@wtccracing.org

Group 2 – Formula Awesome - Mark@worldspeed.com 

Group 3 – Heatwave Retro NASCAR - Justin@heatwavevisual.com

Full Course Drift - Drift Cave - danielc@driftcave.com

Global Time Attack - jd@globaltimeattack.com

Road Racing Format 

  • A single practice session Saturday morning, a Qualifying session

  • Four heat races

  • Finishing position from each heat sets your grid for the next

  • Heat 3 finish sets your starting position for the Main

  • The weekend podium is based on the finishing position in the Main only
     

Heat races will be 6 laps (not time-based), and the Main is scheduled for 10 laps. 

There will be a Friday test day available as an add-on option during registration. 
 

Spectators
Every entry comes with an additional GA credential for a guest of a driver. Any additional crew, guests, or spectators over the age of 12 will need to secure a General Admission ticket - or if you are a spectator looking for General Admission ticketing, all of that, plus pre-event merch can be found here: https://thunderhillopen.com/

Event requirements

We are coordinating with each of the groups for their own individual control over tech, stewarding, and organizaton - Please connect with your group lead to ensure your vehicle meets series specific safety standards for all equipment, and vehicle build specifications. Thunderhill also requires an event specific tech form to ensure that both the competitor and series have a document to work off and sign off on together. This is in the driver documents google drive here - drive.google.com/drive/folders/1tSd4QK0T0PaoCoxsBmO_7vrts_cD26ec?usp=sharing

Global Time Attack is handling their own registration process which can be found on their website - globaltimeattack.com - The Friday test day is a separate registration, GTA competitors are welcome and will have their own run group, a Thunderhill Tech form will be required for participation, to be filled out by you, and turned in at registration. 

An active competition license with your respective group is required, if you are unsure of you competition license status, please contact your group lead:
 

Group 1 – Western Touring Car Championship - team@wtccracing.org

Group 2 – Formula Awesome - Mark@worldspeed.com 

Group 3 – Heatwave Retro NASCAR - Justin@heatwavevisual.com

Full Course Drift - Drift Cave - danielc@driftcave.com

Global Time Attack - jd@globaltimeattack.com

Full Course Drift will be by invite only - if you would like to be considered - email Daniel Chow at Drift cave, the fee will be $350 for two days 

 

Attendees (1)

MB
Matt Busby

Thunderhill Raceway Park

Willows, CA
Download track map
Download track map
Buy track decal
Buy track decal
Buy virtual track walk
Buy virtual track walk

Organizer

Club Race organized by

Thunderhill Raceway Park

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The Thunderhill Open

Fri, Mar 5 - Sun, Mar 7, 2027