The 2019 Quaker State 400 presented by Walmart was a Monster Energy NASCAR Cup Series race held on July 13, 2019 at Kentucky Speedway in Sparta, Kentucky. Contested over 269 laps—extended from 267 laps due to an overtime finish, on the 1.5-mile (2.4 km) speedway, it was the 19th race of the 2019 Monster Energy NASCAR Cup Series season.