The Autotrader EchoPark Automotive 400 is returning to Dover Motor Speedway in 2026. America's best drivers will test their skills against the World's Fastest One-Mile Oval. The event will be the 108th NASCAR Cup Series race at the high-banked, one-mile, concrete track. The Monster Mile is one of only 10 tracks in the country to host 100 or more NASCAR Cup Series races.