The 2021 Shore Lunch 150 was the 11th stock car race of the 2021 ARCA Menards Series season, the sixth race of the 2021 ARCA Menards Series East season, the fifth race of the 2021 Sioux Chief Showdown season, and the 15th iteration of the event.

The race was held on Saturday, July 24, in Newton, Iowa at Iowa Speedway, a 7⁄8 mile (1.4 km) permanent D-shaped oval racetrack.

The only 45-minute practice session would occur on Saturday, July 24, at 4:15 PM CST.

[3] Qualifying would take place on Saturday, July 24, at 6:00 PM CST.

[2] Drivers would all have two laps to set a time- the fastest of the two would be counted.