A triathlon is a multi-sport race that combines three disciplines: swimming, cycling, and running. Participants complete these events in a specific order, typically starting with swimming, followed by cycling, and finishing with running. Distances can vary, with popular formats including the Olympic distance and the Ironman distance. Triathlons can be completed individually or as part of a relay team, where each member competes in one segment. These events are held worldwide and attract athletes of all skill levels, from beginners to elite competitors. Training for a triathlon often involves a mix of endurance workouts and skill development in each sport.