John Henry Marshall

John Henry Marshall (born November 5, 1963) is a former middle-distance track athlete who specialized in the 800 meters. He competed for the United States at the 1984 Summer Olympics. He was married to former 800-meter runner Debbie Grant, with whom he has a son, Myles Marshall, who is also an 800-meter runner and competed for the US junior team in 2014.

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