New York City Marathon: At age 40, marathon runner Meb Keflezighi continues to shine

Marathon runner Meb Keflezighi discusses his performance in this year's New York City Marathon and explains how he can continue to run so well at age 40.

Marathon runner Meb Keflezighi discusses his performance in this year's New York City Marathon and explains how he can continue to run so well at age 40.


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