The marathon world record stands at 2 hours 2 minutes and 57 seconds. Is it possible for a human to run the race in less than 2 hours flat? Part 2--the Kalenjin, Kenya's super-runners.

The marathon world record stands at 2 hours 2 minutes and 57 seconds. Is it possible for a human to run the race in less than 2 hours flat? Part 2--the Kalenjin, Kenya's super-runners.

The marathon world record stands at 2 hours 2 minutes and 57 seconds. Is it possible for a human to run the race in less than 2 hours flat? Part 2--the Kalenjin, Kenya's super-runners.

#3 The Impossible Marathon, Part 2

A show about numbers and us. Documentary stories about ourselves, our world, our universe--guided by a curiosity for math and numbers.

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#3 The Impossible Marathon, Part 2

#3 The Impossible Marathon, Part 2