Jim Rathmann was born on 16 July 1928 in Los Angeles, California, United States. He was married to Mary Kay. He died on 22 November 2011 in Melbourne, Florida, United States.
Partner in the GCR Corporation racing team that competed in the USAC Series in 1966 and 1967. The "G" represented Gus Grissom, the "C" represented Gordon Cooper, and the "R" represented Rathmann.