The Allstate 400 at The Brickyard, introduced as the Brickyard 400 in 1994, 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 Allstate 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 Indianapolis Motor Speedway's nickname. The course was paved in brick in 1909, and they remain under the asphalt pavement to this day.