Double Regional Thunderhill info on May 25, 2013 (613442) |

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Double Regional Thunderhill


SCCA - San Francisco Region - Club Racing

Saturday, May 25 — Sunday, May 26, 2013
Thunderhill Raceway Park, Willows, CA

Registration closed May 21, 2013 11:59 PM on May 21, 2013 11:59 PM PDT Registration ends May 21, 2013 11:59 PM on May 21, 2013 11:59 PM PDT Registration opens April 15, 2013 12:00 AM on April 15, 2013 12:00 AM PDT Registration runs from April 15, 2013 12:00 AM to May 21, 2013 11:59 PM


SFR logo



San Francisco Region

Double Regional

Thunderhill Raceway

May 25-26

Event Schedule

Schedule customized to your survey comments:

Groups 2, 3, 4 - you wanted more qualifying, you've got it!

Groups 5, 6, 7 - you wanted more racing, you've got it!

Groups 2-4 have 2 Qual. & 2 Race sessions = 110 minutes

Groups 5-7 have 1 Qual. & 3 Race sessions = 110 minutes

Enter Now, Pay Later!  In 2013, SFR will charge your credit card AFTER the race weekend. , We are taking advantage of the Deferred Payment Option offered by MotorsportReg. 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!

Enter by midnight Friday, May 17 to avoid the $30 late fee and to retain your reserved number.

Online entry closes Tuesday, May 21 at midnight; after that you will need to enter at the track and pay the $50 post entry fee.

CAR NUMBERS are NOT confirmed until Monday afternoon the week of the event. 

If you have a "permanent number" AND you enter before deadline (Friday the week before the event), you WILL be assigned that number. Otherwise, we CANNOT assign your number until Monday the week of the event.

Thunderhill Test Day on Friday, May 24

If you have questions about the event, please contact the SF Region Office: 888-995-7222 or


Six Groups:

Practice, Qualify, Race; Qualify, Race

GROUP 2 .............FA, FB, FS, ASR*, CSR, DSR, S2, FE, FM, SR*

GROUP 3 .............ITE*, ITR*, SS*, GT1, GT2, GT3, GTL, GTA*, SP*, EP, AS, N3*, NL*,  PC*, T1, T2, T3, T4
GROUP 4 .............FF, CF*, FV, F5, F6*, FST*, FC
Practice, Qualify, Race, Race, Race!
GROUP 5 .............ITS*, ITA*, ITB*, ITC*, ITX*, FP, HP, STL*, STU, GTP*, SE30*, B-Spec, SMG*
GROUP 6 .............SRF
GROUP 7 .............SMT*, SSM*
Qualifying order for Race 2 Groups 15, 16 & 17 will be determined by fastest lap in Race 1. Disqualified cars will start at the back.
Qualifying order for Race 3 will be determined by fastest lap in Race 2. Disqualified cars will start at the back.


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.

This event will be held under the 2013 SCCA General Competition Rules and the 2013 SFR Supplemental Regulations.


Attendee List

View current entry list



Thunderhill Raceway Park
Location Willows, CA
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