Triathlon is a combined sport consisting of three disciplines- swimming, cycling and running competed in continuity and succession. The most common form of the sport consists of these three disciplines only; however other variations of the game may also exist. The sport is a part of summer Olympics since 2000. The first triathlon consisting of these three sports (swimming-cycling-running) in succession was held on 25th September 1974 at Mission Bay, San Diego, California. But the sport is considered to have its beginning in the 1920s in France with a race named “Les Trois Sports” having a 3km run, 12km bike racing followed by swimming. The global governing body of the sport- ITU was founded in 1989.