World Triathlon, previously known as the International Triathlon Union (ITU), is the international governing body for the multi-sport disciplines of triathlon, duathlon, aquathlon and other nonstandard variations. World Triathlon hosts the top level international race series the World Triathlon Championship Series and the ITU Triathlon World Cup. World Triathlon also has a long-distance race circuit with official world championships. Additionally, World Triathlon sanctions and organizes official Aquathlon (run-swim-run), Duathlon (run-bike-run) and Winter triathlon championships. World Triathlon is headquartered in Lausanne, Switzerland
Michelle Dillon is a retired British triathlete.
Vanessa de Sousa FernandesGOIH ComM OM is a Portuguese athlete who is a former triathlon European and world champion, and an Olympic medalist. In duathlon, she was also European and world champion.
Jacquilyn Louise "Jackie" Fairweather was an Australian world champion triathlete, long-distance runner, coach and Australian Institute of Sport high-performance administrator.
Catriona ("Cat") Morrison MBE is a British triathlete and duathlete of Scottish origin.
Alistair Edward Brownlee MBE is a British triathlete. He is the only male athlete to hold two Olympic titles in the individual triathlon event, winning gold medals in the 2012 and 2016 Olympic Games. He is also a four-time World Champion in triathlon being Triathlon World Champion twice and World Team Champion twice, a four-time European Champion, and the 2014 Commonwealth champion. Brownlee is the only athlete, male or female, to have completed a grand slam of Olympic, World, continental and Commonwealth championships. Brownlee is also a one-time world champion in aquathlon.
Emma Jane Pooley is a British-Swiss athlete in multiple sports. A former professional cyclist who specialised in time trials and hilly races, she later transferred to endurance running, duathlon and triathlon, and was four-times world champion in long-distance duathlon. She competes in long-distance and uphill mountain running and has represented Switzerland at the world trailrunning championships.
Ai Ueda is a Japanese triathlete. She is the winner of the 2005 and 2008 Asian Triathlon Championship and the winner of the 2013 ITU Duathlon World Championships. She has represented Japan in triathlon in both the 2008 and 2012 Summer Olympics.
The World Triathlon Duathlon Championships is a duathlon championship competition organised by World Triathlon. The race has been held annually since 1990. The championships involve a continuous run-cycle-run, with the format since 1994 being a first run of 10 km, a cycle of 40 km and a second run of 5 km.
Jonathan Callum Brownlee is a British professional duathlete and triathlete. He is a six-time World champion, and one-time Olympic champion in triathlon.
Charlotte Morel, is a French professional triathlete, twelve times National Champion in various duathlon and triathlon categories, e.g. National U23 Triathlon Champion of the years 2009, 2010, 2011, and 2012. Since 2006, Morel is a permanent member of the French National Team. In the French Club Championship Series, Morel represented the club Beauvais, which e.g. in 2006, 2009 and in 2010 won both the French Club Championship Series Lyonnaise des Eaux and the National Club Championships in Gruissan. From 2013 to 2016, however, Morel will represent Issy les Moulineaux because of Beauvais' complete retreat from the elite sports.
Sophie Coleman is an English ex-professional triathlete, Junior Duathlon World Champion of the years 2008 and 2009, U23 Duathlon World Champion of the year 2010, Junior Duathlon European Champion of the year 2007, and British Junior Triathlon Champion of the years 2008 and 2009.
Anne Haug is a German professional triathlete, National Duathlon Champion of the years 2008 and 2009, and vice Triathlon Champion of the year 2009. She represents the clubs TV 1848 Erlangen, Team Icehouse, and LG Stadtwerke München.
Annamaria Mazzetti is an Italian professional triathlete and 2009 National Champion in three categories.
Chris Mosier is an American advocate for transgender rights and competitive racewaking and is also a triathlete. He started his athletic career before transitioning, started his transition in 2010, and in 2015 earned a spot on the Team USA Racewalking sprint duathlon men's team for the 2016 World Championship, making him the first known out trans athlete to join a U.S. national team different from his sex at birth.
Magali Tisseyre is a Canadian triathlete from Montreal who races primarily in long distance, non-drafting triathlon events. She took third place at both the 2009 and 2010 Ironman 70.3 World Championships.
Christiane Pilz is a German triathlete who competed at the 2008 Summer Olympics in Beijing.
Siri Lindley is an American triathlon coach and former professional triathlete. She is the 2001 ITU Triathlon World Champion as well as the winner of the 2001 and 2002 ITU Triathlon World Cup series and 2001 ITU Aquathlon World Championships. She has coached a number of Olympic and Ironman athletes and champions, including Mirinda Carfrae, Leanda Cave, Sarah True, and Susan Williams. In 2014, she was selected to be a member of the inaugural International Triathlon Union (ITU) Hall of Fame class.
Ashleigh Gentle is an Australian triathlete who was selected as part of the team for the 2016 Summer Olympics in Rio de Janeiro. She took second overall in the 2017 ITU World Triathlon Series, her career best to date.
Beth Potter is a Scottish long-distance runner and triathlete competing internationally for Great Britain, and for Scotland at the Commonwealth Games. She competed for Great Britain in athletics at the 2016 Summer Olympics in Rio de Janeiro. In 2019 she won the gold medal at the European Triathlon Championships in Weert, Netherlands. In 2022, she won individual bronze at the 2022 World Triathlon Sprint Championships, and silver with Team Great Britain in the World Triathlon Mixed Relay Championships.
Great Britain 
