He’s a regular guy who, at the age of 47, felt it was about time to get in shape. That was in the 1960s. These days, at age 88, McNelly is the world record-holder for most marathons completed after the age of 70, 80 and 85, and he’s not showing any signs of slowing down!

See how a kid who wasn’t interested in sports made the change — and get his advice for starting slowly and building up to 20 marathons a year.

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