An Ironman race is a long-distance triathlon that consists of three main segments: a 2.4-mile swim, a 112-mile bike ride, and a 26.2-mile marathon run. Athletes must complete these segments in a specific order and within a set time limit, typically 17 hours. These races are known for their challenging nature and require extensive training and preparation. Ironman events are held worldwide, attracting both professional and amateur athletes. Participants often train for months or even years to build the endurance needed to finish this grueling competition.