The Autotrader EchoPark Automotive 400 is an annual event in the NASCAR Cup Series. For the 2025 season, it is held at Dover Motor Speedway in Dover, Delaware. Known as "The Monster Mile," Dover features a challenging 1-mile (1.6 km) concrete oval with 24-degree banking in the turns. The race covers 400 laps, totaling 400 miles (640 km). This event is a significant mid-season test for drivers and teams, demanding precision and endurance on one of NASCAR's most demanding concrete surfaces.