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Triathlon was in the programme of The World Games in 1993, after which it has been in the programme of the Olympic Games. Duathlon will be in The World Games for the third time in 2025 in Chengdu, China.
Consisting of running and cycling, a duathlon can be contested on almost any terrain, although it usually takes place on tarmac. The 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.