Larson died on June 11, 1966, as a result of injuries sustained in a
sprint car crash at the
Reading Fairgrounds Speedway in
Berks County, Pennsylvania that also claimed the life of Red Riegel. According to
The Kansas City Star, "Authorities said the accident occurred when the wheels of their cars locked during the second lap of the featured event." Both cars then "went up a short embankment around the first turn near the grandstand and tumbled back onto the track two times in succession," pinning both men inside their respective cars. A crowd of roughly six thousand witnessed the accident. Larson was buried at the Cook-Walden Capital Parks Cemetery and Mausoleum in
Pflugerville, Texas.
Mario Andretti was among those who later paid tribute to him. ==Complete AAA/USAC Championship Car results==