Swimming is the first of the three disciplines in triathlon and therefore, with good preparation, gives every triathlete the possibility of a good performance right from the start. The triathlon swim is different from most other swim competitions because in a triathlon you usually swim in open water. This type of swimming not only requires endurance and technical preparation, but you should also take into account some other peculiarities of triathlon swimming. This includes that usually all triathletes start the race closely together leading to a lot of people swimming at the same time, which sometimes can lead to injuries. Furthermore, for certain temperatures, wetsuits may be required to protect the triathlete and must be effectively removed before the cycling portion. All of these factors are important for triathletes to keep in mind during their triathlon swim training and to adapt their swim workouts accordingly. In the following, we will go into some of the special features of triathlon swim training and try to give you the most important information about triathlon swimming.