Late Apex 4 Hour Enduro

Thunderhill Raceway Park

October 18, 2026

Entry Fees:

Enduro CAR Fee: $1250

Min Driver count per car = 1, Maximum Driver count per car = 4

Activities: 1 hr Qualifying Practice - 4 hr enduro - 1 hr Track Day Experience
(Workers, Family, and Crew)

To run this event, we must reach 25 registered cars by midnight on September 13th. If we do not hit 25 sign-ups by the deadline, the event will be canceled and you will not be charged.

Once we hit our 25-car minimum to run the event your card will be charged and, all registrations become final and non-refundable.

Schedule:TBD

Track Configuration: 3-mile course

CAR NUMBERS are confirmed Friday afternoon the week before the race.

Car Classes

ENDURO CLASSES:
ES-R Prototype (ESR):
Eligible Cars: P, P2, NASA Super Unlimited

ES-1 GT Extreme (ES1):
Eligible Cars: GT1, SP, NASA ST1, NASA ST2

ES-2 GT Pro (ES2):
Eligible Cars: GT2, SS, T1, ITE, GT3, GTA, NASA ST3

ES-3 GT Club (ES3):
Eligible Cars: STU, N3, SRF3, GTX, SMG, EP, T2, T3,NASA ST4

ES-4 Touring Pro (ES4):
Eligible Cars: STL, SSC5, FP, GTL, AS, Spec E46, NASA ST5

ES-5 Touring (ES5):
Eligible Cars: Spec E30, SMX, ITS, MC, EM1, ITA, ITR,GT3U, THR, T4, SMT, ITX, SSM, HP, NASA ST6, ITB,ITC, VTA

If you have questions about the race weekend, please contact the SF Region Office: 530-934-4455 or dottie@sfrscca.org

If you do not already have a MotorsportReg account, please follow the steps below to create your account this first time. Next time you enter, just log into your account and future entries for SFR events will be quick and painless!

If you do not already have one, create an account on MotorsportReg.com after reading these steps.
Once logged in, click "My Account" in the top right
Review your vehicle(s), making sure to enter your permanent/preferred numbers and your transponder number
Enter your medical information for the Ambulance/Life Support crew.
Now come back to this page and enter the event and pay online.