Here’s The National Geographic Breaking2 Documentary You’ve Been Waiting For

National Geographic followed the three world-class marathoners in Italy as they worked to reach the sub-2-hour marathon barrier.

Last night, National Geographic aired their Breaking2 Documentary, where they followed the journey of champions Eliud Kipchoge of Kenya, Lelisa Desisa of Ethiopia and Zersenay Tadese of Eritrea as they worked to beat the 2-hour marathon barrier.

The runners were joined in Italy by an elite group of physiologists and were outfitted with custom shoes from Nike, all to strive for perfect race day conditions and performance.

National Geographic has now made the documentary available online and you can watch the entire fascinating journey in the video above.

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