<Tr> <Th> Club </Th> <Td> Ranelagh Harriers </Td> </Tr> <P> Ed Whitlock (March 6, 1931--March 13, 2017) was an English - born Canadian long - distance runner, and the first person over 70 years old to run a marathon in less than three hours with a time of 2: 59: 10 in 2003 . </P> <P> Whitlock, who ran as a teenager and took up the sport again in his forties, first became the oldest person to run a marathon in less than three hours in 2000, at the age of 69, with a time of 2: 52: 47 . He later extended this record, running a time of 2: 58: 40 at the age of 74 . At 73, he set a world record in the marathon for men 70 to 74, running a 2: 54: 48, his fastest time after turning 70 . According to an article in The New York Times, if age - graded, this time would be equivalent to a 20 - year - old running 2: 03: 57 and which would have been the fastest marathon ever run in 2010 . For an explanation of age - graded tables, see masters athletics . At the time of his death, Whitlock was known to be the only person over 70 to run a marathon in less than three hours . At age 85, he became the oldest person to run a marathon in less than four hours at 3 hours, 56 minutes 34 seconds at the Toronto Waterfront Marathon in October 2016 . </P> <P> Whitlock was born in a suburb of London, England, and later moved to Canada to pursue an engineering career following graduation from Royal School of Mines, Imperial College, England . He later resided in Milton, Ontario . </P>

Oldest person to run sub 3 hour marathon
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