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Content: After six months of scientifically advanced training, three of the world's most elite distance runners set out to break the two-hour marathon barrier. These pioneers go on a global trek to defy the unthinkable and break the two-hour feat, from testing in wind tunnels and running labs in the United States, to balancing training with their day-to- day lives in eastern Africa, to the final heart-pounding race in Italy.

Countries:

United States of America

Genres:

Documentary

Runtime:

55 minutes

Year:

2017

Directors:

Martin Desmond Roe

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Production companies:

National Geographic

Actors:

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Crews:

Director of Photography

Editor

Executive Producer

Director