March 23-24, 2013
Double Regional
Buttonwillow Raceway Park
SANCTION #:
13-R-2456-S/13-R-2457-S/13-E-2458-S/13
-CT-2459-S/13-CT-2758-S

REGIONAL GROUP 1 SM SATURDAY SUNDAY GROUP 2 SRF SATURDAY SUNDAY GROUP 3 GT/SP/STO/FP/T1-2/IT/STL/STU SATURDAY SUNDAY GROUP 4 Formula/Sport Racers/S2 SATURDAY SUNDAY Enduro/Time Trials SATURDAY