Timeless Running Wisdom by Richard Benyo, which looks great. Here's an excerpt:
"Millions of runners ply the world’s highways and byways. They weren’t always runners, except in the relatively rare instance in which they ran track and field or cross-country during their school days and continued to do so after graduation.
"Go to any local 5K race and hang around after the race is over and talk to a group of the runners. Ask them how they got into running. If there are eight people there, seven of them will reveal that they weren’t athletes in high school. In each case they will be happy to confirm two things:
1. I never imagined that I was a runner until I became one.
2. I’m more comfortable with myself now that I’m a runner than I’ve ever been in my life.
"The nice thing about running is that the runner is always there, patiently waiting to be released. There isn’t a predetermined starting date or a firm expiration date."
More information, check Human Kinetics