Most of the single is a description about the author's drug days. It's a well-written and easy read but nothing new or terribly interesting here if you're familiar with addiction at all... He's a smart guy who doesn't care, blah blah blah, uses drugs, blah blah, "Strong" enough to just quit drugs cold-turkey--no program, counseling not helpful, blah... Running ultra-long distances "saved" him.
In purchasing this single I was more interested in the running-redemption connection than anything else, as in how running made him feel or how it changed his perspective or how it helped him confront issues of his past. I didn't get any of that in this book. I saw no real growth in the author-- only the discovery that pushing himself to his utmost physical limit distracted him enough to allow him to be able to hold back his drug addiction. If he were to be injured again for a long period of time it seems there'd be a high potential for falling back on old behaviors.
It's not that I expected him to emerge at the end a totally cured, perfect human being, I just expected more of a delve into the personal and philosophical connection between running and recovering rather than a mere description of how he started running.