Biathlon is any sporting event made up of two disciplines. However, biathlon usually refers specifically to the winter sport that combines cross-country skiing and rifle shooting. Other popular variants include summer biathlon, which combines cross-country running with riflery, and biathle (also known as "modern biathlon"), which combines running with swimming.
Read more about Biathlon: History, Governing Body, Championships, Biathlon Venues, Broadcasting, Biathlon Records and Statistics, Biathlon Variants