A little kooky, but ultimately had some great running tips, that were oriented around using running as a form of mindful meditation. They ranged from advice from former olympic coaches to ideas formed out of the human potential movement. After reading the two chapters, I ran one of my best 5ks. Not sure how much of this had to do with what was written, but at the least, provided novel notions to a very repetitive sport. It is a short read, and if you can find a copy, I recommend you pick it up since they are becoming increasingly hard to find.
This book is a little bit of ancient history in running literature: written in 1975, it had all of the loopy hippie stuff in it that you would expect from that era. But I really loved it; I regularly use my running as meditation time. This book was all about that. It's a short little book, so if you're a runner you owe it to yourself to pony up the $3 it will cost you used on Amazon and buy the thing. Really pretty good.