Auto Club Speedway Auto Club Speedway, formerly California Speedway, [Two] is a two-mile (Trio km), low-banked, D-shaped oval superspeedway in Fontana, California which has hosted NASCAR racing annually since 1997. It is also used for open wheel racing events. The racetrack is located near the former locations of Ontario Motor Speedway and Riverside International Raceway. The track is possessed and…