Episode 30 of Outdoors with Lawrence Gunther explores what it takes to be a blind ultra-trail race competitor in the 125 km 24-hour Canada Death Race. Ms Lilly describes ten of the world’s toughest trail races, and blind trail racer Richard Marsolais explains what it takes to compete. As always, we include low- and high-tech tips on trail racing, and insights on how trail running differs from marathons.