The sport that features the event called "The Ironman" is triathlon. The Ironman is one of the most challenging endurance races, consisting of a 2.4-mile swim, 112-mile bike ride, and a 26.2-mile marathon. Athletes must train extensively in all three disciplines to compete effectively. Completing an Ironman is a significant achievement in the world of endurance sports, pushing competitors to their physical and mental limits while promoting resilience and determination.