The 1964 USAC Championship Car season consisted of 13 races, beginning in Avondale, Arizona on March 22 and concluding at the same location on November 22. There was also one non-championship event at Pikes Peak, Colorado. The USAC National Champion and Indianapolis 500 winner was A. J. Foyt. At Indianapolis in the 500 miles race Eddie Sachs and Dave MacDonald were killed during lap 2 of the race; Sachs was 37 years old, and MacDonald was 27. In the Tony Bettenhausen Memorial at Springfield, Bill Horstmeyer died during the race; he was 34 years old. In November, five days after the season ended, Bobby Marshman died in a testing accident at Phoenix; he was 28 years old.
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