The Gold Coast Half Ironman Triathlon is one of the toughest events on the USM EVENTS calendar. Competitors face a 1.9km swim, 90km cycle and 21.1km run as an individual or part of a team in and around the stunning surrounds of Calypso Bay on the northern end of the Gold Coast. The event is the most popular in the Half Ironman series but if you're not up to the long distance then there is a shorter option – Sprintman Triathlon, 1km swim 33km cycle and 7km run.