This category contains sports based on triathlon and its variations:
Triathlon is a sport consisting of three kinds of sports: swimming, cycling and running. There is also a winter triathlon in which swimming is replaced by a ski race.
Duathlon is a sport that includes a run, then a race, and then another run. Duathlon has some similarities with triathlon. At the international level, the duathlon is governed by the International Triathlon Union (ITU).
Aquathlon (or Swim-Run) - multiple alternation of the stages of swimming and running. It is carried out both in the enclosed space, and on the street.