Ultra-triathlon body of Ultra Triathlon. Ultra-triathlon An ultra-triathlon is a long-distance triathlon. The term generally refers to all triathlon events of distance greater than the Ironman Triathlon. Thus, every ultra triathlon event must involve more than of swimming, of cycling, and a full marathon () of running. The most common distances are the double, triple, quadruple, quintuple and deca triathlon. Unlike a standard triathlon event, an ultra-triathlon event may not necessarily involve the three component disciplines of triathlon (swimming, cycling and running) in direct consecutive order, but may instead consist of multiple consecutive individual triathlons performed on consecutive days. The IUTA
Xtreme triathlon Xtreme triathlon Xtreme triathlon refers to a type of triathlon competition where competitors race over distances broadly equivalent to those of an Ironman triathlon (3.8k swim, 180k bike, 42k run). They are by definition held over more extreme courses and potentially more extreme conditions due to the often remote locations and large elevation changes. The original Xtreme triathlon was the Norseman Xtreme triathlon first held in 2003. Many other races have followed on from this and in 2014 the concept of "All XTRI was launched" as a global brand that encompassed Norseman along with Celtman and Swissman. This evolved into