This book is a fascinating journey on ultradistance, one of the most extreme and demanding sports in the world. From the perspective of an amateur and anonymous runner, this book seeks to answer questions such as, how professionals such as Kilian Jornet are trained? What do they eat? How do they withstand so many hours running and nights without sleep? Filled with information on the capacity to realize unimaginable feats as well as the motivation, effort and sacrifice for anyone looking to take their running to the next level.