Distributed by The Sports Xchange
2.520: In miles, the length of Sonoma Raceway for the first nine NASCAR Sprint Cup Series races run there. From 1989 through 1997, Cup races at Sonoma were contested over 74 laps (186 miles) using original Turns 4-7 at the intricate road course. Since 1997, the race has been run over three different lengths, finally settling on the current configuration of 1.990 miles in 2002. Mark Martin won the last race run at 2.520 miles. Coincidentally, that was the last time 44 cars were allowed to start the race. After 1997, NASCAR abandoned the practice of giving two provisional starting spots to NASCAR K&N Pro Series West drivers, and the field was limited to 43 cars.