WATCH: Behind Courtney Dauwalter & Francois D'haene's Ultra-Trail Races at Hardrock 100 and UTMB

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.