Stewart won the Arctic Cat All Star Circuit of Champions race at Pennsylvania Motor Speedway, a half-mile dirt track in Imperial, Pennsylvania.
Stewart, who owns the series, earned $5,000 for winning the 30-lap feature. The event had been scheduled for Saturday but was postponed by rain. Stewart also won his qualifying heat. Carson Macedo finished second in the feature to Stewart. Lee Jacobs was third.
It was Stewart’s second sprint car victory this season. He also won the United Sprint Car Series Spring Speed Xplosion feature April 1 at Bubba Raceway Park, in Ocala, Fla, his first victory of any kind since retiring as a NASCAR driver.
Larson won the 25-lap Burger Barn Northern Summer Nationals on Monday at Ohsweken Speedway, a 3/8-mile dirt track in Ontario, Canada. Parker Price-Miller was second. Dylan Westbrook was third.
Larson will compete with the World of Outlaws there Tuesday night.