Scott Jurek runs distances that I don't even dream of running. I can't imagine running more than the 26.2 miles I ran at the beginning of this year, but Scott Jurek races in ultramarathons (any race of more than 26.2 miles). In the book, he details his experiences training for these outrageous distances (some 135 miles) as well as racing (and many times winning) these ultramarathons. He doesn't only write about running. This book is largely about life.
If you're looking for an inspiring book and have a love of running, this book is for you!