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.
| Tagline | |
| Release Date: | Sep 20, 2017 |
| Genres: | Documentary |
| Production Company: | National Geographic |
| Production Countries: | United States of America |
| Casts: | Eliud Kipchoge, Zersenay Tadese, Lelisa Desisa |
| Status: | Released |
| Budget: | $0 |
| Revenue: | 0 |
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