Indoor triathlon a low cost, fun, safe and unstressful way to initiate newcomers to the sport of triathlon. These races sold out quickly, and the series expanded to other universities and the Ontario InterUniversity Triathlon Association (OITA) was born to oversee it. As triathlon's popularity grew in the 90s, other indoor triathlon races began appearing across North America and the world using a similar format to the OITA races. Indoor triathlon An indoor triathlon is a nonstandard variation of the triathlon and consists of three events: swimming, cycling, and running. The swim is held in an indoor pool, the cycling takes place
ITU World Triathlon Series races will be the ITU Triathlon Mixed Relay World Championships. The world champion was formerly crowned in the ITU Triathlon World Championship, a single championship race that was held annually from 1989, the same year as the formation of the International Triathlon Union (ITU), to 2008. Beginning with the 2009 racing season the ITU Triathlon World Championship was changed to a series of events culminating with a grand final race. From 2009 to 2011 the events were known as the World Championship Series (WCS) before being relabeled World Triathlon Series (WTS) in 2012. In 2011 the sprint distance world championship