How far can you pedal a bike in an hour? It's a simple concept, but the hour record has pushed some of the most accomplished cyclists of alltime to their absolute limits, both physically and mentally.

Why is this event so legendarily brutal?

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Video Courtesy of:

NBC Sports
Global Cycling Network
INEOS Grenadiers

Alex Hutchinson for Outside Magazine: https://www.outsideonline.com/byline/...