Season Opener Double Rational info on Mar 22, 2013 (290806) |

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Season Opener Double Rational


SCCA - San Francisco Region - Club Racing

Friday, Mar 22 — Sunday, Mar 24, 2013
Thunderhill Raceway Park, Willows, CA

Registration closed March 20, 2013 6:59 AM on March 20, 2013 6:59 AM PDT Registration ends March 20, 2013 6:59 AM on March 20, 2013 6:59 AM PDT Registration opens February 15, 2013 12:00 PM on February 15, 2013 12:00 PM PST Registration runs from February 15, 2013 12:00 PM to March 20, 2013 6:59 AM


SFR logo



San Francisco Region

Season Opener Double Rational

Thunderhill Raceway

March 22-24, 2013

Event Schedule

Current Entry List - Click on link at top right

   Rational = 

<  National-length sessions and races

< National and Regional classes

< Trophies for both Regional and National winners

<  Points for Sunoco Regional Series, National series or Both

Enter by midnight Friday, March 15 to avoid the $30 late fee and to retain your reserved number.

Enter now, pay later!  In 2013, SFR will charge your credit card AFTER the race weekend. Yes, we are taking advantage of the improved Deferred Payment Option offered by MotorsportReg. When you register, you enter your credit card information; after the race weekend, we actually process the card. 

Online entry closes March 19 at 12 midnight; after that you will need to enter at the track and pay the $50 post entry fee.

To enter this event you must have a valid competition license. The full list of accepted licenses appears on the next page.

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

Thunderhill will conduct a test day on Thursday for a separate fee. Sign up at the track on Thursday.

Your group, class, and car number will be listed on the Entry List on MotorsportReg. The list is always current (find it by going to the Announcement page on and clicking on “Current Registration List” in the upper right. Car numbers will not be official until Monday afternoon the week of the event.

Groups and Classes for this event

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

GROUP 3..... ITE*, ITR*, GT1, GT2, GT3, GTL, GTA*, SP*, AS, EP, N3*, NL*, PC*, SS*, T1, T2, T3, T4

GROUP 4..... FF, CF*, FV, F5, FST*, FC

GROUP 5..... ITS*, ITA*, ITB*, ITC*, ITX*, FP, HP, STL, SE30*, ITX*, STU, GTP*, BSpec, SMG*

GROUP 6..... SRF

GROUP 7..... SM (National only); SMT* and SSM* (Regional Only)

* Regional-only classes


Spec Miata T (SMT) must use either Toyo Proxes RA-1 tires – 205x50x15 OR Hoosier SM6 tires. Either RA-1 or Hoosier 20 may be used as rain tires.

Sealed Spec Miata (SSM) must use Toyo Proxes RA-1 tires – 205x50x15. 


Attendee List

View current entry list



Thunderhill Raceway Park
Location Willows, CA
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