Sonoma Sprints Double Rational info on Jul 5, 2013 (480098) |

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Sonoma Sprints Double Rational

SCCA - San Francisco Region - Club Racing

Friday, Jul 5 — Sunday, Jul 7, 2013
Sonoma, Sonoma, CA

Registration closed July 2, 2013 4:00 PM on July 2, 2013 4:00 PM PDT Registration ends July 2, 2013 4:00 PM on July 2, 2013 4:00 PM PDT Registration opens June 1, 2013 12:00 AM on June 1, 2013 12:00 AM PDT Registration runs from June 1, 2013 12:00 AM to July 2, 2013 4:00 PM


       Sonoma Sprints logo

           SFR logo



San Francisco Region

Sonoma Sprints

featuring Spec Miata Festival

and Double Rational

Sonoma Raceway

July 5-7, 2013

Event Schedule

   Rational = 

<  National-length sessions and races

< National and Regional classes and points

< Trophies for both Regional and National winners

<  Points for Sunoco Regional Series, National series or Both

Enter by midnight Friday, June 28 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. 

To withdraw without penalty, notify the Region Office by Tuesday, July 2 at 5 p.m. $25 withdraw fee afterwards.

Online entry closes July 2 at 5 pm; after that you will need to enter at the track and pay the $50 post entry fee.

Paddock access: On July 4th, Competitors can stage in Lot 2 above the paddock and await release to the paddock which will occur sometime Thursday evening after the drag races and SCCA paddock setup.

Sonoma will conduct a test day on Monday, July 1 for a separate fee. Contact Sonoma in advance to sign up and get lowest rate:  All trailers, cars, equipment, etc. must be removed from the paddock at the end of the test day.

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

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.

Spec Miata (National class) must use Hoosier SM6 or H20 tires. Spec Miata T (Regional SMT) must use either Toyo Proxes RA-1 tires (205x50x15), Toyo RR tires (205/50-15) OR Hoosier SM6 tires. Either RA-1 or Hoosier H20 may be used as rain tires.   If you run Hoosiers, you may opt to earn both National and Regional points by picking "Both" in the dropdown when registering.  NOTE THE CHANGE : TOYO RR NOW PERMITTED FOR REGIONAL SMT AS OF THIS EVENT!

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


Food Drive for Redwood Empire Food Bank

In partnership with the Speedway Children’s Charities, San Francisco Region will be conducting a food drive at the Double Rational weekend to support the Redwood Empire Food Bank.  The Speedway Children’ Charities mission is: “To care for children in educational, financial, social and medical need in order to help them lead productive lives.”

In supporting the work of the Speedway Children’s Charities with the Redwood Empire Food Bank SFR can say thank you to a community which has supported racing for many years.

Food barrels will be located at Race Administration and at Social.  Race Administration will also have donation envelopes available for tax deductible financial gifts.


Attendee List

View current entry list


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Location Sonoma, CA
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