What is a triathlon?

A triathlon is a sport event consists of swimming, biking and running.

It varies in distance. To find more about the different type of triathlon, please visit this post on How long is a triathlon.

In triathlon, there is a transition zones. The transition areas between the swim and the bike is called T1 (transition 1). After the bike, there is a transition 2 (called T2 for short).

In almost all triathlons, the swim is taken place in open water. In most case, triathlon participants is allow to wear a wetsuit. In the bike segment, helmet is mandatory for safety reasons. Since the race is an individual performance, most of the triathlons do not allow drafting in the bike portion.