A triathlon is a multiple-stage competition involving the completion of three continuous and sequential endurance events. While many variations of the sport exist, triathlon, in its most popular form, involves swimming, cycling, and running in immediate succession over various distances. Triathletes compete for fastest overall course completion time, including timed "transitions" between the individual swim, bike, and run components.
Triathlon races vary in distance. According to the International Triathlon Union, and USA Triathlon, the main international race distances are Sprint Dista...