Marcus O'Sullivan
| Personal information | |||||||||||||||||||||||||||
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| Born | 22 December 1961 | ||||||||||||||||||||||||||
| Achievements and titles | |||||||||||||||||||||||||||
| Olympic finals | 1984, 1988, 1992, 1996 | ||||||||||||||||||||||||||
| Personal best(s) | 800m: 1:45.87 1500m: 3:33.61 | ||||||||||||||||||||||||||
Medal record
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Marcus O'Sullivan (born in Cork, Ireland on 22 December 1961) is an Irish retired middle-distance runner. He competed for Ireland at four Summer Olympics. After Steve Scott and John Walker, he is the third all-time by total of sub-4 minute miles run over the course of his career, at 101.