Joe Friel is the most trusted coach in the world and his proven triathlon training program has helped hundreds of thousands find success in the sport of triathlon. Joe has completely rewritten this new Fourth Edition of to incorporate new training principles and help athletes train smarter than ever. equips triathletes of all abilities with every detail they must consider when planning a season, lining up a week of workouts, or preparing for race day. With this new edition, Joe will guide you to develop your own personalized triathlon training program and: is the best-selling book on tri training ever published. Get stronger, smarter, and faster with this newest version of the bible of the sport. Coach Joe Friel started writing the fourth edition of with a blank page: the entire book is new. The science and sport of triathlon have changed much since the previous edition released. This new edition adds emphasis to personalizing training plans, incorporates new power meter techniques for cycling and running, improves on the skill development techniques, updates the strength training approach, speeds recovery for busy athletes, and cuts through the noisy volume of training data to focus athletes on the numbers that mean the most to better performance. See Joe Friel’s blog or 4655 for an expanded summary of improvements to this fourth edition.