A triathlon is an endurance multisport race consisting of swimming, cycling, and running over various distances. Triathletes compete for fastest overall completion time, racing each segment sequentially with the time transitioning between the disciplines included. The word is of Greek origin, from τρεῖς or treis (three) and ἆθλος or athlos (competition).
Katherine Jessie Jean "Kate" Allen is an Australian-Austrian triathlete. She won the gold medal in the women's triathlon at the 2004 Summer Olympics in Athens.
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
Simon Christopher Lessing, MBE, is a British triathlete who won five International Triathlon Union (ITU) world titles. He also won races at 70.3, ITU long distance and Ironman-distance events. He set an Olympic-distance world record in 1996, and is noted for his 2004 Ironman Lake Placid win, where he set a course record of 8:23:12. In 2008 he retired from professional racing. Simon resides in Boulder, Colorado, United States, where he operates Boulder Coaching with Darren de Reuck.
Vassilis Krommidas is a triathlete and coach from Greece best known for competing at the 2000 and 2004 Olympic Games.
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.
Francisco Javier Gómez Noya is a Spanish triathlete. He is the winner of five ITU Triathlon World Championships, he holds three ITU Triathlon World Cup titles, and won the Silver medal for Spain at the 2012 Summer Olympics in men's triathlon. He has also won world titles for Ironman 70.3 and XTERRA Triathlon.
Laura Marie Bennett is an American professional triathlete. She placed fourth in the women's triathlon at the 2008 Summer Olympics. In 2012, she finished 17th at the London Olympic Games. She earned a silver medal at the World Triathlon Championships in 2003 and bronze medals in 2004, 2005, and 2007. She has also raced at the Half-Ironman distance, placing 5th at the 2009 Ironman 70.3 World Championship.
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.
Rachel Klamer is a Dutch professional triathlete and member of the National team. She placed third at the Junior World Championships in 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.
Charlotte McShane is a Scottish-born Australian professional triathlete and the 2013 U23 ITU World Triathlon Champion and the 2008 Xterra U20 World Champion.
Mario Mola, is a Spanish professional triathlete. He is the 2016, 2017 and 2018 ITU World Triathlon Series World Champion. He has placed 19th at the London Olympic Games 2012, 8th at the Rio Olympic Games 2016 and 10th at the Tokyo Olympic Games 2020. In addition to his World Triathlon Series wins, he has placed second and third in 2014 and 2015 ITU World Triathlon Series.
Ognjen Stojanović is a Serbian triathlete.
Annabel Luxford is an Australian triathlete. In International Triathlon Union (ITU) competition she is the 2005 ITU Triathlon World Cup series champion and the silver medalist at the 2005 ITU Triathlon World Championships. In 2004, she was the ITU under-23 World Champion and also finished second in the ITU Triathlon World Cup standings. In 2013, after changing to non-drafing long course racing, she finished third at the Ironman 70.3 World Championships.
The World Triathlon Championship Series is World Triathlon's annual series of triathlon events used to crown an annual world champion since 2008. There are multiple rounds of competitions culminating in a Grand Final race. Athletes compete head-to-head for points in these races that will determine the overall World Triathlon champion. The elite championship races are held, with one exception, over two distances, the standard or 'Olympic' distance and the sprint distance. The ITU world champion between 1989 and 2008 had been decided in a single annual championship race.
Kristian Blummenfelt is a Norwegian triathlete and Olympic and World Champion Gold medalist, competing at short course, 70.3 (half-Ironman) and 140.6 (Ironman) distances. He won the gold medal in the men's triathlon at the 2020 Summer Olympics held in Tokyo, Japan. He is the 2021 Ironman World Champion at the first World Championship held at Saint George, Utah on May 7, 2022. On 5 June 2022, Blummenfelt became the first person to complete an Ironman-distance triathlon in under seven hours during the Pho3nix Sub-7 Sub-8 event at the Lausitzring race track in Germany. Blummenfelt set a new unofficial world record for the Ironman-distance triathlon, in a time of 6:44:25.
Hana Kolarova is a professional triathlete from Czech Republic, based in United Kingdom. She is junior national champion 2007. and Czech Triathlon Series winner 2012.
Sarah Coope is a British former professional triathlete and current triathlon coach.
Netherlands 
