The 2021 Coke Zero Sugar 400 was a NASCAR Cup Series race held on August 28, 2021, at Daytona International Speedway in Daytona Beach, Florida. Contested over 165 laps -- extended from 160 laps due to an overtime finish, on the 2.5-mile (4.0 km) superspeedway, it was the 26th race of the 2021 NASCAR Cup Series season, and the final race of the regular season before the playoffs. Ryan Blaney won an incident-filled race in overtime, while Tyler Reddick, who finished in fifth place, secured the final spot in the playoffs.