Consisting of running and cycling, duathlon can be contested on almost any terrain, although usually on tarmac. The ITU Duathlon World Championships are held on an annual basis and consist of a 10km run, 40km cycle and 5km run. At elite level the cycling is draft legal.
Although many competitors specialize in duathlon, the sport is often used during the triathlon off-season by Age Groupers and elites to improve their run speed and bike power. Events are usually held in the spring or autumn so as not to clash with summer triathlon races.
The 2015 ITU World Championships were hosted in Adelaide, Australia.
The 2016 edition will be hosted in Avilés Spain:
ITU has also joined forces in the last years with Powerman, with an ongoing agreement until 2016. As part of the cooperation, there will be partial integration in the ITU Duathlon Rankings, taking into account the ITU Powerman World Championships, Long Distance Duathlons that regional federations determine as Continental Championships and events declared as National Championships by the NFs.