02/24/2011 04:16 pm ET | Updated Nov 17, 2011

Bob Keller, 77-Year-Old Star Athlete, Will Run, Swim And Bike Laps Around You

By Jim Henry
AOL Sports

At age 77, Keller has competed in nearly 850 racing events, from neighborhood runs here in Florida's state capital to world championship duathlons and triathlons in Scotland, Hawaii, Germany and Australia.

The amazing part is Keller didn't get serious about running and racing until he turned 50.

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