The Tor des Geants is a beautiful but grueling endurance race through the Italian Alps. Featuring 80,000 feet of climbing and 200 miles of steep, rocky trails, the Tor des Geants gives runners a mere 150 hours to finish. Beat Jegerlehner shot these videos of the heart-breaking scenery and fatigue he experienced as he raced for more than five days on less than five hours of sleep.