I am an avid runner, so I was definitely interested in reading this. McDougal definitely conveys his love of running, and he does a good job of showing how ultra marathoning exploded into the public view, especially the Leadville 100. The beginning does read like a bit of an adventure story, where he chroicles his pursuit of Caballo Blanco. I liked how the author introduced the various characters that ultimately made the trip down to the final race.
Having said that, this book had a hard time keeping my interest for some reason. I think the problem was (for me, anyway) that the book read like a series of magazine articles which is not surprising considering that's how the book got its genesis (through McDougal's magazine writing). However, better editing would have lead to a more seamless transition between chapters.
While I don't blame McDougal for the editing woes, I was disappointed at the abrupt ending. I enjoyed the last chapter about Caballo's background. However, I think another chapter was in order-it would have been great to have the perspectives of the other runners in that final race. Did racing with the Tarahumana change their outlook on running? Did it change them in other ways?
Despite these shortcomings, ultimately I enjoyed reading the book and gave me a lot to think about with running. I'd recommend it.