INDIANAPOLIS, IN:  The Indianapolis Motor Speedway, located in Speedway, Indiana (an enclave suburb of Indianapolis) in the United States, is the home of the Indianapolis 500 race and is known as the racing capital of the world.

It has existed since 1909, and is the original "Speedway," the first racing facility historically to incorporate the word. With a permanent seating capacity for more than 257,000 people and infield seating that raises capacity to an approximate 400,000, it is the largest and highest-capacity sporting facility in the world. (By comparison, the world's largest stadium seats 220,000 spectators.)

Besides the Indianapolis 500, NASCAR's Allstate 400 at the Brickyard (formerly Brickyard 400) also takes place there. The Speedway also hosted the United States Grand Prix for Formula One from 2000 to 2007. The inaugural race drew an estimated 225,000, which set a Formula One attendance record. In 2008, the Speedway added the Red Bull Indianapolis GP, a MotoGP event.