The 2021 Alsco Uniforms 300 was a NASCAR Xfinity Series race held on May 29, 2021.

The race was held at Charlotte Motor Speedway, located in Concord, North Carolina.

The speedway was built in 1959 by Bruton Smith and is considered the home track for NASCAR with many race teams based in the Charlotte metropolitan area.

Riley Herbst was the fastest in the first practice session with a time of 30.263 seconds and a speed of 178.436 mph (287.165 km/h).

[3] Riley Herbst scored the pole position after a time of 29.350 seconds and a speed of 183.986 mph (296.097 km/h).