The Auto Club Speedway is a NASCAR-owned and operated motorsports facility paved in 1997 on what used to be a steel mill in Fontana, California, an hour drive east from downtown Los Angeles. It was born with the name California Speedway, changing it later in 2008 as part of a sponsorship deal with the Automobile Club of Southern California (ACSC). There are several possible layouts in the racing complex, such as the NASCAR speedway oval, a sports car road course, a motorcycle course, and the inner test circuit. Fontana has excellent weather throughout the year, with pleasant temperatures, relatively low humidity, and scarce precipitations, making it an ideal place for high-performance racing.
The sports car road course is a 2.88-mile (4.63 km) layout that combines the NASCAR oval with an intricate infield section of the race track consisting of 19 turns and several straightaways. There are plenty of passing opportunities in the oval, where racers press the gas pedal hard the reach velocities as high as 150 mph (241 km/h). The other internal layout in the Auto Club Speedway is the infield road course, a 2-mile circuit that consists of straight segments and chicane-like turns.
The interior test circuit or infield road course of the Auto Club Speedway has an average lap time of 1:13.1 and does not touch the NASCAR oval in any of its sections. It contains several 90-degree corners, some tight-angle turns, and several straights to allow easy overtaking spots for racers.