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
USA Triathlon annually since 1982. In 2014, the USA Triathlon Age Group National Championships in Milwaukee, Wisconsin, drew 5,700 registered participants. USA Triathlon's mission is to grow and inspire the triathlon community. USA Triathlon's vision is to provide the resources required for all in the triathlon community to reach their full potential. USA Triathlon is a member-based organization founded in 1982. At the end of 2013, USA Triathlon reached a record-high 174,787 annual members, up 5.5 percent from year-end 2012. USA Triathlon has seen steady membership growth since 1995, impacted greatly by the addition of triathlon to the Olympic Games in 2000.