Biathle Biathle is one of the multi-sports, which originated as an event to train for the modern pentathlon. Biathle is a combination of running and swimming, with the standard distances being a 1500 m run, a 200 m swim and another 1500 m run. It bears close resemblance to aquathlon, which comes from triathlon sport, but the disances are shorter. Biathle is governed by the Union Internationale de Pentathlon Moderne, which was founded in 1948. World Championships: Men Women