https://www.nationalgeographic.com/adventure/article/trail-running-video-founders-of-the-upchuck-50k-on-making-a-new-cult-classic
Upchuck 50K Trail Race from Rock/Creek on Vimeo. By Andrew Kornylak, The Blind Monkey The Upchuck 50K is one of the toughest trail races in the country, and in...
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