Ontario Motor Speedway

Ontario Motor Speedway was a motorsports complex in Ontario, California, United States. The complex featured various layouts, including a 2.500 mi (4.023 km) rectangular oval and a 3.194 mi (5.140 km) roval road course. From its opening in 1970 until its closure in 1980, the facility hosted numerous major racing events, including USAC, CART, NASCAR, IMSA GT Championship, NHRA, and exhibition Formula One events. The track since its closure has been demolished, with the track site now occupied by the Ontario Center, a mixed-use commercial center, which includes shopping centers, housing developments, hotels, a school, office space, a public park, and the Toyota Arena. After two separate failed proposals by Sam Hanks and Filmways in the mid-1960s, Ontario Motor Speedway was built in the late 1960s and completed in 1970 with financial support from lawyer David B. Lockton and Stolte, Inc., with track leaders aiming to replicate the success of the Indianapolis Motor Speedway on the American West Coast. Ontario Motor Speedway throughout its existence had a white elephant status. From its opening, OMS faced heavy financial troubles, with its original operators suffering millions in losses and several high-level resignations. In 1973, after the original operators went bankrupt, a group led by Tony Hulman and Parnelli Jones took over operations, remaining until early 1975 when the group

Racecourse data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).