A triathlete covers a total distance of approximately 140.6 miles in an official full-distance competition, which includes a 2.4-mile swim, a 112-mile bike ride, and a 26.2-mile run. The combination of these three disciplines tests not only physical stamina but also mental toughness and strategic pacing throughout the event. Completing a triathlon is a remarkable achievement that showcases an athlete's versatility and endurance.