Dean Karnazes: The Man Who Can Run Forever

Dean Karnazes left a high-paying job in San Francisco to pursue his passion for running—and never looked back. Known for his unbelievable endurance, Karnazes has completed some of the world’s toughest ultramarathons and once ran 50 marathons in 50 states in 50 days. Discover the story of a man who defies human limits and lives to run.