The 2018 Overton's 400 was a Monster Energy NASCAR Cup Series race that was held on July 1, 2018 at Chicagoland Speedway in Joliet, Illinois. Contested over 267 laps on the 1.5-mile (2.4 km) intermediate speedway, it was the 17th race of the 2018 Monster Energy NASCAR Cup Series season. The race would become best known for its intense finish, and for producing arguably one of the best finishes in NASCAR history, as Kyle Busch and Kyle Larson dueled in the closing laps of the race for the win.