How about some non-fiction?
This is a book about ultra marathon runners, and is especially about a tribe of indigenous Mexican runners who can outrun the worlds top ultra marathoners. This book will make you want to get out and run no matter how fat and lazy you are. It's a great read.
Here's a blurb about it from the author's website:
Full of incredible characters, amazing athletic achievements, cutting-edge science, and, most of all, pure inspiration, Born to Run is an epic adventure that began with one simple question: Why does my foot hurt? In search of an answer, Christopher McDougall sets off to find a tribe of the world's greatest distance runners and learn their secrets, and in the process shows us that everything we thought we knew about running is wrong.