In one of his most ambitious physical efforts to date, Dean Karnazes attempted to run 50 marathons, in 50 states, in 50 days to raise awareness of youth obesity

When elite ultrarunners have a need for speed, they turn to coach Jason Koop. Now the sport’s leading coach makes his highly effective ultramarathon training

Runner James Shapiro begins his classic Ultramarathon with an account of running with 16 other men for 24 hours around a 400-meter track. This long-distance run

An inspirational memoir by Scott Jurek, one of the finest ultrarunners in the world.

Training book for ultramarathon. Hardcover edition