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This man catches marathon cheaters and calls them out on his blog

Marathon runners who cheat have become more sophisticated in their methods – they don’t need to hop on a bus to stay ahead of the competition. See how one man is trying to stay a step ahead of them as a self-styled marathon investigator. NBC’s Stephanie Gosk reports for Sunday TODAY.

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This man catches marathon cheaters and calls them out on his blog

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This man catches marathon cheaters and calls them out on his blog

Play Video - 5:06

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