The 2003 Brickyard 400, the 10th running of the event, was a NASCAR Winston Cup Series race held on August 3, 2003 at Indianapolis Motor Speedway in Speedway, Indiana. Contested at 160 laps on the 2.5 mile (4.023 km) speedway, it was the twenty-first race of the 2003 NASCAR Winston Cup Series season. Kevin Harvick of Richard Childress Racing won the race. Kevin Harvick became the first driver to win the race from the pole position.