The Extreme Runner is an exciting book written by Jacob Juul Hastrup, taking the reader on an adventurous journey through jungles, mountains and deserts. The book is filled with fascinating stories about extreme races and the challenges that come with them. Learn about extreme sports and explore the limits of human performance with Jacob Juul Hastrup's captivating stories about his own experiences. The book is an inspiring and engaging story for anyone who is interested in adventure racing, extreme sports and the exciting world of adventurous runners.