An Ironman Triathlon is one of a series of long-distance triathlon races organized by the World Triathlon Corporation (WTC), consisting of a 2.4-mile (3.86km) swim, a 112-mile (180.25km) bicycle ride and a marathon 26.22-mile (42.20km) run, raced in that order and without a break. Most Ironman events have a limited time of 17 hours to complete the race.