Endurance athlete Dean Karnazes, ran 350 miles (560 km) in 80 hours and 44 minutes without sleep in 2005. In 2006, Karnazes embarked on the well-publicized Endurance 50: 50 marathons in 50 states in 50 consecutive days. Beginning with the Lewis and Clark Marathon in St. Louis on September 17, 2006, it finished with the […]