The series ran at Riverside International Raceway during the late 1960 and early 970s. To pay tribute to the Raceway, which opened in 1957 and closed in 1989, a 60th Anniversary Gala was held on February 21, 2026, at the Mission Inn, which served as the series’ race headquarters. Guests enjoyed a cocktail reception and dinner with invited VIPs from both series, with Ed Justice Jr. as emcee. Some of the renowned racing legends included Jim Hall II, representing his father, who created the Chaparral racecars; John Morton, the Shelby team in USRRC and also an IMSA driver; Pete Lyons, an award-winning author and photographer; and Trevor Harris, creator of the AVS Shadow Can-Am car.
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