Bring your classic racer to Sonoma Raceway for this vintage-focused event—CSRG knows how to run a proper grid with pre-war, sports car, and formula classes. Whether you're campaigning a 356 or a Lotus, you'll find your people and your pace group on one of California's best road courses. Full details & registration: https://www.motorsportreg.com/events/sears-point-challenge-2026-sonoma-raceway-csrg-523088