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The ITU Triathlon Mixed Relay World Championships, is an annual team triathlon competition organized by the International Triathlon Union (ITU). The competition is completed in teams of four, two men and two women, with each member doing a super-sprint distance triathlon.
The IAAF World Relays is an international biennial track and field sporting event where teams from around the world compete in relay races, some of which are not part of the standard Olympic programme. The first three editions were set to take place in Nassau, Bahamas at the Thomas Robinson Stadium in 2014, 2015 and 2017. Originally intended as an annual event, it was later decided to happen every odd year, the same as the IAAF World Championships in Athletics for which it serves as a qualification stage.
The 48th Biathlon World Championships was held in Oslo, Norway from 3 to 13 March 2016.
The 13th FINA World Swimming Championships were held at the WFCU Centre in Windsor, Ontario, Canada from 6 to 11 December 2016. These championships featured swimming events in a 25-meter (short-course) pool.
The 2016 European Aquatics Championships took place from 9 to 22 May 2016 in London, United Kingdom, in the London Aquatics Centre. It was the thirty second edition of the event, and the second held in the same year as a Summer Olympics. Hosts Great Britain headed the medal table for the second successive event; although their swimming return was slightly down, partly down to a small number of star names resting prior to Rio, the gap was made up by an outstanding performance in the diving pool.
Athletics is one of several sports contested at the quadrennial Commonwealth Youth Games. It has featured at every edition of the competition since its inauguration in 2000. Athletes under nineteen years old may compete.
This article includes the world record progression for the 4×50 metres freestyle relay and it shows the chronological history of world record times in that competitive short course swimming event. The 4×50 metres freestyle relay is a relay event in which each of four swimmers on a team swims a 50-metre freestyle leg in sequence. The world records are recognized by and maintained by FINA, the international competitive swimming and aquatics federation that overseas the sport in international competition.
Biathlon at the 2018 Winter Olympics was held at the Alpensia Biathlon Centre, Daegwallyeong-myeon, Pyeongchang-gun, Gangwon-do, South Korea. There were eleven events contested: men and women competed in each of sprint, pursuit, individual, mass start, and relay; there was also a mixed relay event. The eleven events were scheduled to take place between 9 and 23 February 2018.
