Winter triathlon is a multisport event involving the continuous and sequential completion of snowshoeing or running, mountain biking or speed skating and cross-country skiing, all on snow.
Course distances are set on the day of the event to achieve a winning time around 80–90 minutes, after taking account of the snow conditions.
[1] Since 2013, the International Triathlon Union created a new version of the sport, which consist of 12km of ice skating, 8km of cross-country skiing and 5 km of snowshoeing.
It is called winter triathlon S3, because the three sports start with an S (skate, ski, snowshoe).
[citation needed] The sport was denied inclusion in the 2014 Winter Olympics in Sochi, Russia.