Going back to its roots, NASA NorCal presents the 12 hrs of Thunderhill.

.12 straight hours of racing guarantees you will get plenty of windshield time. Assigned Paddock and Pit spaces, plenty of time to set up. Testing will be available on Friday (separate fee).

The Team Racing Endurance Challenge is designed to make endurance racing fun, safe, and accessible — without compromising competition integrity. With flexible tire regulations, straightforward licensing for only $20, and minimal barriers for entry, TREC offers a gateway into motorsports for drivers seeking their first taste of endurance racing or seasoned racers looking for more track time. 

Affordable Entry Fees and Team Structure\

TREC encourages team involvement while keeping event costs manageable:

• Entry fees and registration responsibilities fall to the Team Captain (team owner), who manages paperwork and payments for the team.
• Each driver must also register individually and be listed on their team.

This structure supports shared costs and camaraderie, making endurance racing approachable for small teams and budget-conscious competitors.

Accessible Licensing — Get on Track Quickly

One of the cornerstones of the 2025 TREC Series is simplicity in licensing:

• No previous competition license or racing experience required to participate — just a valid driver’s license and enthusiasm for racing.
• While a NASA Competition License or TREC license is required to register and compete in TREC events, NASA makes this affordable and straightforward.
• A TREC competition license is available for purchase through your NASA profile for just $20 — making this one of the most cost-effective pathways into competitive racing.
• Drivers new to TREC will need to submit a Provisional License application and complete NASA’s basic rules test. With safe driving and participation in three events, provisional status can be elevated to full TREC license standing.

This streamlined process lets drivers spend less time on paperwork and more time on the track — leveling the playing field for those who want to race without long licensing waits or high fees. 

Tire Rules — Competitive Yet Inclusive

TREC’s tire regulations balance performance with accessibility:

• Competitors may run any street-legal DOT tire rated 200 treadwear (TW) or higher as displayed on the tire sidewall.
• Additionally, competitors may choose any tire permitted under NASA’s Super Touring rules, so long as classing minimum lap times are maintained.
• This approach allows drivers to use cost-effective performance tires while retaining fair and consistent competition across classes — without requiring specialized racing slicks.

By encouraging the use of widely available 200+ TW tires, NASA helps keep running costs down and improves accessibility.

For the complete 2025 TREC rules and details, visit the NASA TREC 2025 Rules document and join the excitement of grassroots endurance racing this season.

For more details, visit https://members.drivenasa.com/events/5334