The 2020 Shore Lunch 150 was the seventh stock car race of the 2020 ARCA Menards Series, the third race of the 2020 Sioux Chief Showdown, and the 14th iteration of the event. The race was held on Saturday, July 18, 2020, in Newton, Iowa at Iowa Speedway, a 7⁄8 mile (1.4 km) permanent D-shaped oval racetrack. The race took the scheduled 150 laps to complete. At race's end, Ty Gibbs of Joe Gibbs Racing would dominate and win his fifth career ARCA Menards Series win and his third of the season. To fill out the podium, Sam Mayer of GMS Racing and Bret Holmes of Bret Holmes Racing would finish second and third, respectively.