HMSA Historic Sports Car Challenge

The HMSA (Historic Motor Sports Association) Historic Sports Car Challenge is a showcase event for period sports-racing cars — typically 1950s through 1970s prototypes, GTs and can-ams. HMSA is the long-time curator of vintage racing in the western US and runs the historic grid at the Acura Grand Prix of Long Beach every year. Races are exhibition format — not championship — with practice sessions through the weekend and two on-track "Challenge" runs.