If there is one throughline in the arc of 33-year old Guillaume Calmettes' life is that his pursuits are not done at half-speed. From his former life as a skydiver to his academic achievements to his now ultrarunning career, Guillaume has always sought to live out his potential in all endeavors. His greatest challenge awaits as he gets ready to toe the line at the infamous Barkley Marathon. 

:: Katie Grossman's Ultrarunning Magazine article on Big Dog: https://ultrarunning.com/featured/one-more-hour-guillaume-calmettes-245-832-miles-at-big-dog-backyard-ultra/

:: Big Dog Ultra Strava: https://www.strava.com/activities/1246374847

:: Last Big Barkley Workout on Strava: https://www.strava.com/activities/1445828953

:: Guillaume's Instagram: https://www.instagram.com/gcalmettes/

:: Girlfriend Pauline's Instagram: https://www.instagram.com/pauline_baking/

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