I finished The Kite Runner and am now reading What I Talk About When I Talk About Running. It's a memoir by famous Japanese writer Haruki Murakami. In addition to being a writer, he is a long distance runner and has ran marathons and ultra marathons. The book examines the relationship between writing and running for him. It can be a bit rambling at times, but I am enjoying it since I am also a writer and have been running a lot the last couple months. (I run about 25 miles a week).
Here's a great line from it:
"Pain is inevitable. Suffering is optional."