Instruct: Classify a review as either positive or negative.
Query: Couldn't put it down

As I read through Kirk Johnson's account of his journey and motivation and inner search that made up his Badwater ultramarathon experience, I was pulled into his writing the same way long-distance running seduced me as a young man. He captured the euphoria, isolation, drive and the heart and essence of endurance running in a way I haven't seen done. He was lyrical and poetic in his descriptions of the epic battle of man against himself. I would recommend the book to any runner or to anyone who wonders why we run. The only criticism I have are the few moments in the book where Johnson seems to repeat emotions he is feeling that he already has delved into. But the power of the book is evident in that Johnson's gripping tale has created in me a runner who longs to tempt Badwater and Death Valley. Well-done book.