Triathlon is a sport consisting of three races, starting with swimming, then cycling and ending with running, according to many sources, this sport was born during the period from 1920 to 1930 of the last century in France, where it was called at the time Les Trois Sports, a French sentence meaning “sports Three ”. Triathlon remained poorly popular for years before it began to flourish in the late 1980s with the establishment of an international federation for this sport in 1989, and from here the sport of triathlon became very popular worldwide.