Fri, May 15 - Sun, May 17, 2026

The Thunderhill Open

Thunderhill Raceway Park

About this event


 

Thank you for choosing The Thunderhill Open! 

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

Road Racing Classes 

(Drift info further down) 

Group 1 – Spec Miata — Limited to 50 entries 

Group 2 – Western Touring Car Championship 

Group 3 – RushSR West 

Group 4 – Spec E46 

Group 4 – Spec E30 

Group 5 – Formula Awesome, presented by World Speed 

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. 

Example: What tire are we on for the SE46? Ask your group lead. 

Group 1 – Spec Miata 

Greg Hoff – greg@sfrscca.org 

Group 2 – WTCC 

Oscar Jackson, Jonathan Lugod – team.wtccracing@gmail.com 

Group 3 – RushSR West 

Jeff Schneider – jeff@rush-california.com 

Group 4 – Spec E46 

Peter Jones – peter@legacy-motorworks.com 

Group 4 – Spec E30 

Tim F. Barber – tfbperformance@gmail.com 

Group 5 – Formula Awesome 

Telo Stewart – telo@worldspeed.com 

Road Racing Format 

Being that most of what we’re doing is pretty non-traditional, we figured — why not do the same with the format? 

We’ve always loved the heat-based structures popular in karting and dirt series across the country. Here’s what to expect: 

 

  • A single practice session Saturday morning

  • Four heat races

  • Heat 1 starts with a random grid

  • 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
     

Heat races will be 8 laps (not time-based), and the Main is scheduled for 12 laps. 

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

 

The Thunderhill Open Drift 


 

Presented by Drift Cave and Animal Style 

By application and approval only — limited to 45 spots. The Top 16 will advance to competition. 

The registration option is for applying to be selected. The event is limited to 45 spots — selecting this option does not guarantee you a spot. 

Once you’ve selected the application option, email: 

driftteamanimalstyle@gmail.com and danielc@driftcave.com 

Julian and Daniel will be making the selections. In your email, include: 

 

  • Instagram username

  • A brief resume of your driving history

  • Pictures/specs of your comp car

  • What tire and tire size you plan to run
     

Entry is $250 for the 45 selected drivers. 
 

Drift Format 

Saturday – Main Event 

9:00 AM – 2:00 PM — Open Practice 

2:00 PM – 4:00 PM — Judged Practice 

Judges: Daniel Chow, Julian Jacobs, Matt Field 

5:30 PM — Top 16 Selection, Brackets Announced 

6:00 PM — Drift Competition Starts 

Sunday 

9:00 AM – 5:00 PM — Demos and Ridealongs 
 

General Questions 

If you have a general question that isn’t answered here, email matt@thunderhill.com. We’ll get it answered and added for the next person. 

Event Requirements 

For road racing classes, a valid competition license is required. 

Questions? Email matt@thunderhill.com 

Tech, logbook, and other requirements specific to your class should be directed to your Group Lead. 

 

Drift Program Notes 

The Drift Program is by application. Driver and tech requirements will be clarified throughout the selection process by emailing: 

driftteamanimalstyle@gmail.com and danielc@driftcave.com

Event requirements

For Road Racing classes, a valid competition licence is required - email Matt@thunderhill.com if you have questions - Tech, logbook, and any other requirement questions for your specific class should be sent to your Group Lead. 

Non-Traditional class collections
- So we are doing something a little different... Instead of housing, operating, and policing 7 rulesets (including drift) that each have their own cultures and quirks, we figured its a better experience for everyone if we just go straight to the experts. We have partnered with race groups directly, but separately so these group leads will be in charge of rulesets, tech, pre-event questions that are specific to the class. For example - What tire are we on for the SE46? Ask your group lead. 

Group 1 - Greg Hoff - greg@sfrscca.org

Group 2 - WTCC - Oscar Jackson, Jonathan Lugod - team.wtccracing@gmail.com

Group 3 - RushSRWest - Jeff Schneider - Jeff@rush-california.com

Group 4 - SpecE46 - Peter Jones - peter@legacy-motorworks.com -
                SpecE30 - Tim F. Barber - tfbperformance@gmail.com

Group 5 - Telo Stewart - telo@worldspeed.com

Drift Program is by Application - driver and tech requirements will be clarified throughout the selection process by emailing driftteamanimalstyle@gmail.com and danielc@driftcave.com

Entries (4)

JL
Jonathan Lugod
SV
Schuyler VanBuskirk
MB
Matt Busby
SE
Stephen Ellis

Thunderhill Raceway Park

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

Organizer

Club Race organized by

Thunderhill Raceway Park

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The Thunderhill Open

Fri, May 15 - Sun, May 17, 2026