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Auto Club Speedway, a racetrack that plays host to the NASCAR Cup Series and Xfinity Series, along with former IndyCar Series events. It is located in an unincorporated part of Fontana, on Cherry Avenue. It is built on the former site of the Kaiser Steel mill. The large smelting furnaces of the mill were sold to China, and the rest remains a working steel mill operated by California Steel Industries, which is owned by the Japanese company JFE Steel Corporation. The track is currently a low-banked 2-mile oval, but will be terraformed into a 0.5 mile long short track that is similar in style to the Bristol Motor Speedway by 2023 due to the COVID-19 Pandemic forcing it to be pushed back a year.