The Triathlon Training Book About the Author James Beckinsale (Msc and BTA Level 3) is one of the UK's leading high-performance triathlon coaches. Founder of Optima Racing Team in London and Olympic and Commonwealth Games Coach, he has been training novice and elite athletes for 17 years, and has coached age-group triathletes to medal at World, European, and Ironman competitions. His website is www.optimaracingteam.com.