The Brickyard 400 is an annual 400–mile (644 km) NASCAR Sprint Cup points race held at the Indianapolis Motor Speedway in Speedway, Indiana. The event, when first held in 1994, marked the first race other than the Indianapolis 500 to be held at the Indianapolis Motor Speedway since 1916. Since the inaugural race, the Brickyard 400 has become NASCAR's most–attended event, drawing an estimated crowd of more than 250,000 fans annually. It also has become NASCAR's second highest paying race in dollars (behind the Daytona 500).

The term "Brickyard" is in reference to the nickname historically used for the Indianapolis Motor Speedway since 1910. The course was paved in brick in 1909, and a one-yard strip of brick remains exposed the start/finish line. From 2005-2009, the race was known as the Allstate 400 at the Brickyard, under a naming rights arrangement with Allstate Insurance.

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