The triathlon is an endurance sport consisting of swimming, cycling and running. The distances for each discipline vary and are carried out without a break between the exercises and with continuous timing. The competition is won on time and everyone starts together.

The competition always starts with swimming and takes place continuously from the start of swimming until you have finished the cycling and running legs. The time used in during the transitions between the three legs also counts towards the total time. Triathlon is organized under an international federation called the ITU, and in Norway under the Norwegian Triathlon Federation, which is a separate federation under the Norwegian Olympic and Paralympic Committee and Confederation of Sports.