Report and photos by Dennis Gray
The 10th annual Classic Sports Racing Group (CSRG) Charity Challenge was held October 4-6, 2013 at the 12-turn, 2.52-mile Sonoma Raceway Sears Point in Sonoma, California. This year’s event featured a strong field of more than 200 historic race cars, with pre-war, sports racing and formula as well as production and GT entrants running in eight race groups.