Duncan E. MacDonald (born January 15, 1949) is an American

long-distance runner Long-distance running, or endurance running, is a form of continuous running over distances of at least . Physiologically, it is largely Aerobic exercise, aerobic in nature and requires stamina as well as mental strength. Within endurance ru ...

. He ran collegiately for

Stanford University Leland Stanford Junior University, commonly referred to as Stanford University, is a Private university, private research university in Stanford, California, United States. It was founded in 1885 by railroad magnate Leland Stanford (the eighth ...

and competed in the men's 5000 metres at the

1976 Summer Olympics The 1976 Summer Olympics (), officially known as the Games of the XXI Olympiad () and officially branded as Montreal 1976 (), were an international multi-sport event held from July 17 to August 1, 1976, in Montreal, Quebec, Canada. Montreal ...

. He was also a three-time winner of the

Honolulu Marathon The Honolulu Marathon (branded JAL Honolulu Marathon for sponsorship reasons) is a marathon (26.2 miles or 42.2km) in Honolulu, Hawaii. It was first held on December 16, 1973, and it typically takes places on the second Sunday in December. The ma ...

, in 1973, 1974 and 1980. In 2017, MacDonald was the boys and girls cross country coach at the

Punahou School Punahou School (known as Oahu College until 1934) is a private, co-educational, college preparatory school in Honolulu, Hawaii. More than 3,700 students attend the school from kindergarten through 12th grade. The school was established by P ...

in Honolulu.

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* 1949 births Living people Athletes (track and field) at the 1976 Summer Olympics American male long-distance runners Olympic track and field athletes for the United States Stanford Cardinal men's track and field athletes Place of birth missing (living people) 20th-century American sportsmen {{US-longdistance-athletics-bio-stub