On Saturday, October 12, 2019, Eliud Kipchoge became the first person ever to run a marathon in under two hours, a staggering achievement in athletics and human performance. Dr. Michael Joyner, an exercise physiologist at the Mayo Clinic, first predicted it might be possible in a paper he wrote in 1991. WIRED's Robbie Gonzalez has been following Kipchoge's attempts for years, and spoke with Joyner about how Kipchoge finally made it happen.

Check out WIRED’s previous coverage of Kipchoge’s quest to break the two hour barrier:

Kipchoge’s 2017 Sub2 attempt: https://www.wired.com/2016/12/niketw...

Postrace analysis of Kipchoge’s first sub2 attempt https://www.wired.com/2017/05/twohou...

WIRED’s running club tries to run at Eliud Kipchoge’s pace: https://www.wired.com/2017/05/youlln...

The science behind Kipchoge’s controversial shoes: https://www.wired.com/story/thescien...

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