SFR Championship Regional 5 & 6 info on Apr 15, 2023 (554218) |

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SFR Championship Regional 5 & 6

SFR Championship Regional 5 & 6

SCCA - San Francisco Region - Club Racing

Saturday, Apr 15 — Sunday, Apr 16, 2023
Thunderhill Raceway Park, Willows, CA

Registration closed April 13, 2023 11:00 AM at 2023-04-13T11:00:00-0700 Registration ends April 13, 2023 11:00 AM at 2023-04-13T11:00:00-0700 Registration opens December 13, 2022 12:00 AM at 2022-12-13T00:00:00-0800 Registration runs from December 13, 2022 12:00 AM to April 13, 2023 11:00 AM




SCCA San Francisco Region

Championship Series Regionals 5 & 6

Thunderhill Raceway Park

April 15-16

Entry Fees:

Double Race $515

Single Race $375

Dual (extra class, same driver, all, or part of weekend)  $225

Schedule: 2023 Regional 5 & 6 SFR ROAD RACING SCHEDULE UPDATE 3-22-23.pdf

Track Configuration: 3-mile course

Test Day: Hosted by Thunderhill Raceway Park. Please call Schuyler for more information at 530-934-5588

Test Day April 14, 2023: Thunderhill Test Day Link
Enter by Friday April 7, 2023 to retain your permanent number.

Online entry closes Thursday April 13, 2023; after that you will need to enter at the track and pay the $50 post entry fee.

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

Enter Now, Pay Later!  SFR will charge your credit card AFTER the race weekend. When you register for a race, you enter your credit card information; after the race weekend, we actually process the card. Now there’s no money barrier to entering early, ensuring you retain your all-important permanent number!

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

Seven Groups: Class FC and FF will Run in Group 2 for this event. 

Group 1 …………. FA, FA2, FA3, FM, FX, F4

GROUP 2 ............ ASR*, EM1, EM2, FC, FE2, FF, FFT, FS, P1, P2, S2*

GROUP 3 ............ AS, E46, EP, ITE*, GT1, GT2, GT3, GTX*, MC*, SMX, SP*, T1, T2, T3

GROUP 5 ............ B-Spec, FP, GTL, HP, ITA*, ITB*, ITC*, ITR*, ITS*, ITX*, SMG*, SSC5*, STL, STU, T4, T5

GROUP 6 ............ SRF*, SRF3, SRFH

GROUP 7 ............ SM, SMT*, SSM*

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!

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