Sat, Mar 8, 2025

Speed SF - 3/8 - 3/9 Endurance Race

Buttonwillow Raceway

About this event

    

 

2.5 hours Endurance Race 

3/8 - 3/9 (Sat-Sun)  Buttonwillow New Circuit Track

  • 2.5 hours race
  • $550 / team
  • The race format, regulations, and pricing are the same as our previous event. You can find more details on our blog at the following link: Rules / Blog
  • Feel free to let us know if you have any questions by emailing us at info@speedsf.com

Rules:

  • Tires: Any tires
  • No minimum driver requirement 
  • Vehicles must comply with SCCA, NASA, Lucky Dog, PCA, WRL, wheel-to-wheel racing rules

Classification:

  • Three classes: Group A / B /C
  • Classes will be determined by Sunday's qualifying time. We will class your car based on our experience and the vehicle's performance at the current race. 
  • Group A - Fastest 
  • Group B - Mid
  • Group C - Slowest

Pit stops:

  • 1 Minimum pit stop required. 
  • Pit stops will only be performed at the hot pit with a 5-minute required pit time. (In and out of the paddock/hot pit)
  • Refuel must be performed in the hot pit.
  • Tire change is allowed after refueling.
  • A timer will be placed on every vehicle during the pit stop.

 

Race pace:

  • We will set a delta lap time after the qualifying session. The delta is -1 sec. If your vehicle goes faster than our pre-set lap time by 1 sec of your class, a penalty (Black flag) will be issued.
  • The first black flag will be a drive-through warning letting you know you have exceeded the time. The second black flag will be a two- (2) minute hold. The third black flag will be a five- (5) minute hold. The fourth black flag will result in a disqualification for that race, and the vehicle will be removed from competition for the rest of the day. 

 


 

Event requirements

Requirements:

  • No minimum driver requirement for this race.
  • 18+ years old with a valid US or International driver's license
  • Minor (16+) requires approval.
  • NASA SCCA race licenses are required. Lucky Dog or other racing series are allowed with demonstrated/documented racing experience.
  • My laps / AMB transponder is required. Rental is available.
  • Vehicles must comply with SCCA, NASA, Lucky Dog, PCA, WRL, wheel-to-wheel racing rules

 

Buttonwillow Raceway

Buttonwillow, CA
Download track map
Download track map

Organizer

Endurance Racing organized by

Speedsf.com

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Speed SF - 3/8 - 3/9 Endurance Race

Sat, Mar 8, 2025