english: And as athletes have realized that we're perfectly suited for ultra-endurance, they've taken on feats that would have been unthinkable before, athletes like Spanish endurance racer Kílian Jornet.
non_english: Toen atleten merkten dat ze  perfect waren voor ultrasporten deden ze dingen die voorheen onmogelijk leken. De Spaanse uithoudingssporter Kilian Jornet bijvoorbeeld.