OTL: Fauja Singh, the runner

Oldest Marathon Runner (0:31)

At the young age of 101, Fauja Singh is believed to be the world's oldest marathon runner. (0:31)

Fauja Singh ran his first marathon at age 89 and became an international sensation. Now 101, he'll run his last race in Hong Kong -- and try to find peace with a Guinness World Records slight.

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