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There are many reasons to run an ultra-trail race, but are there many to run two of the hardest ultra-trail races in the world with only 6 weeks in between? Let the ultra legends @CourtneyDauwalter and @François_dHaene take you onboard the biggest challenge of their lives as they take on the Hardrock 100 and the Ultra Trail du Mont-Blanc®️ during the summer of 2021.