Ontario Motor Speedway (Johnsonverse)

Ontario Motor Speedway is a motorsport venue located in Ontario, California. It was the first and only automobile racing facility built to accommodate major races sanctioned by all of the four dominant racing sanctioning bodies: USAC (and now IndyCar Series) for open-wheel oval car races; NASCAR for a 500-mile (800 km) oval stock car races; NHRA for drag races; and FIA for Formula One road course races. Additionally, several motorcycle races have been held at the track. Constructed in less than two years, the track opened in August 1970 and was considered state of the art at the time.

The first full year of racing included the Indy-style open wheel Inaugural California 500 on September 6, 1970; the Miller High Life 500 stock car race on February 28, 1971, the NHRA Super Nationals drag race on November 21, 1970 and the Questor Grand Prix on March 28, 1971. Each of these inaugural races drew attendance second only to their established counterparts, the USAC Indianapolis 500, the NASCAR Daytona 500, the NHRA U.S. Nationals, and the U.S. Formula One race at Watkins Glen.

The track was purchased by Johnson Industries in 1980 and has continued to be used for different racing leagues, as well as being used as the NASCAR Cup Series series finale until 1995, and for CART until 1996. It remained in NASCAR's Busch and Craftsman Truck Series, as well as NHRA and Formula One. It will return to the Panasonic Cup Series and NTT IndyCar Series schedules for the 2022 season.