The sport in which athletes compete in three disciplines: swim, bike, and run is known as triathlon. This multi-sport event consists of a sequential series of swimming, cycling, and running, with participants racing against the clock to complete all three segments as quickly as possible. Triathlons come in various distances, including Sprint, Olympic, and Ironman formats, allowing a range of athletes to participate. The sport challenges endurance, speed, and transitions between events, making it a test of overall athletic capability.