Dean Karnazes ran 50 marathons in 50 states in 50 consecutive days to raise awareness for youth obesity and to get America active.
A beautiful and epic journey across the United States during which Dean pushed the limits of human endurance, inspiring thousands of people of all ages and abilities to join him along the way and get outside.

Dean Karnazes shares his invaluable secrets and advice for athletes of all levels. These are the tips that kept Dean going during the 1,310 miles he covered.

With his limitless determination Dean averaged sub-four-hour marathons and often slept fewer than four hours a night to get the job done.