What Will It Take to Run A 2-Hour Marathon

The current world record of 2:02:57, set by Kenyan Dennis Kimetto this year in Berlin, works out to 4:41.5 per mile; a sub-two would require less than 4:35 per mile. Will a human ever run that fast? To answer that question, we assembled a database of more than 10,000 top marathon performances going back half a century, using rankings compiled by the Association of Road Racing Statisticians.

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