In the fall of 2006, Dean Karnazes, known as the "Lance Armstrong of the running world," took on the ultimate challenge: running 50 marathons in 50 states in 50 consecutive days. Dean set off in a caravan packed with fellow runners, with nothing more than a roadmap and a determination that defied all physical limitations. This book goes beyond the story of those 50 marathons: it is a firsthand account of what happens when your body defies all limitations, and it is a story of what it's like to push the limits of strength under grueling conditions. This book also reveals Dean's secrets and training tips, including what to do when you hit a wall, how to adapt quickly to drastic terrain, how to get motivated after a really tough day, and diet and exercise tips to improve your own best time. --From publisher description.