Going Long: Training for Triathlon's Ultimate Challenge by Joe Friel and Gordo Byrn is the best-selling and most comprehensive guide to racing Iron-distance triathlons.

A guide to racing Ironman-distance triathlons. It prepares triathletes, from the working age-grouper to the podium contender, for success in triathlon's ultimate endurance event. It contains sport-specific chapters that outline the stages of development for each of the three disciplines of triathlon and describe drills to improve form.