The 2-Hour Marathon: Art or Science?

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Kenyan Dennis Kimetto holds the world record for running the fastest marathon. In 2014, he ran the Berlin marathon in 2 hours, 2 minutes and 57 seconds. The idea of doing it in less than two hours? Some people think it’s impossible or at least 10 years away. But not Yannis Pitsiladis. He’s a physiologist who works out of England, and he’s on a quest to find and prepare the person who can, through science, run a marathon under two hours by 2019.