Racing on the Infineon Raceway road course will continue for the fourth consecutive year on September 4 in Sonoma, California. Racers will convene Tuesday evenings in September to compete on the 12-turn, 2.52 mile road course, featuring one tough climb and a hairpin turn. The Twilight Race Series will run September 4, 11, 18 and 25, with registration opening at 17:00 and racing starting at 18:00.
