Joe Friel is the most trusted endurance sports coach in the world. He is the best-selling author of The Triathlete's Training Bible, The Cyclist's Training Bible, Fast After 50, Going Long, Your Best Triathlon, The Power Meter Handbook, and Your First Triathlon. Joe has trained endurance athletes since 1980, including national champions, world championship contenders, an Olympian, and top age group athletes of all abilities in triathlon, duathlon, running, road cycling, and mountain biking. He was a founder of the USA Triathlon coaching certification program and holds a master's degree in exercise science. He conducts training and racing seminars and camps for coaches and athletes around the world and provides consulting services for corporations in the fitness industry. He has also been active in businesses and organizations as a co-founder of TrainingPeaks, a web-based software company; as a consultant to sport-related businesses; and as a consultant to triathlon national governing bodies.