I read this book in one sitting. It was a nice, light read and I liked the format. There was, to my mind, a good balance between Vassos sharing his own experiences, and the little sections by various other runners. Lots of them were insightful, or at the very least quite interesting! There were moments of humour, moments of dramatic tension (that triathlon!) - it was an enjoyable read.
I'm not a sporty person. I hated all sports as a child, including running, and I'll admit to feeling a bit sorry for Vassos' daughter who doesn't seem to enjoy it as much but joins in with it as a family activity anyway (although I recognise that this can't be judged properly from small anecdotes in a book!) However, I'm trying to increase my fitness level this year, and on that level, the book was quite inspirational. I have a physical disability that completely rules out any sort of competitive speed or distance, but this month I've been out there doing a few miles a few times a week at my own jog/walk interval pace. I've also signed up for a Race for Life 10k, which will be a personal challenge for me while being non-competitive!
I was slightly bothered by some of the emphasis on expensive running kit, specialist gait analysis, etc. This is more of a personal irritation than a genuine criticism, though, because obviously Vassos is relating his own story and that's part of it.
Overall, it's an entertaining book! I learnt quite a bit about running and runners from it. I wouldn't recommend it to someone with absolutely no interest in the subject, but I'd also say that you don't have to be a runner to enjoy it. Mild curiosity is enough!