The 2003 ITU Triathlon World Championships were held in Queenstown, New Zealand on December 6, 2003.
| Event | Gold | Silver | Bronze |
|---|---|---|---|
| Elite Men |  Peter Robertson (AUS) |  Iván Raña (ESP) |  Olivier Marceau (SUI) |
| Elite Women | Emma Snowsill (AUS) |  Laura Bennett (USA) | Michellie Jones (AUS) |
| U23 Men | Javier Gómez (ESP) | Nick Hornman (AUS) |  Steffen Justus (GER) |
| U23 Women | Nikki Egyed (AUS) | Mirinda Carfrae (AUS) | Zuriñe Rodríguez (ESP) |
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).
World Triathlon 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
Gilberto Carlos González Parra is a triathlete from Venezuela.
Luc Van Lierde is a former athlete from Belgium, who has been competing in triathlon since 1990 and who has been a professional triathlon coach since 2009.
Torbjørn Sindballe is a Danish professional triathlete who was forced to end his competition triathlon career due to heart problems. Torbjørn Sindballe lives in northern Sjælland with his wife Mette, and their 5-year-old son Oskar.
Emma Laura Snowsill OAM is an Australian professional triathlete and multiple gold medalist in the World Championships and the Commonwealth Games. She won the gold medal in triathlon at the 2008 Olympics. Snowsill is married to the 2008 Olympic champion in men's triathlon, Jan Frodeno.
Gregory John Welch, known as Greg Welch, is an Australian triathlete. He is known for having won "The Grand Slam", which includes the ITU Triathlon World Championships (1990), The Ironman World Championship (1994), the ITU Duathlon World Championships (1993) and the Long Course Triathlon World Championship (1994). Greg was an ambassador to the UNHCR in 2000.
Benny Vansteelant was a Belgian duathlete. For the first decade of the 21st century he was the uncontested icon of Duathlon, winning more than 80% of the races he started at.
Alistair Edward Brownlee MBE is a British triathlete. He is the only athlete to hold two Olympic titles in the triathlon event, winning gold medals in the 2012 and 2016 Olympic Games. He is also a two-time Triathlon World Champion, a two-time World Team Champion, a four-time European Champion, and the 2014 Commonwealth champion.
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.
The World Triathlon Cup is an annual series of triathlon races staged around the world. The series is organised by the World Triathlon, the world governing body of the sport. Inaugurated in 1991, the World Cup began as an attempt to create a regular season under its management in tandem with the ITU Triathlon World Championship race. However, this meant that there was a World Cup champion as well as a world champion. Following the 2008 series the ITU reorganized its top level competitions and created the World Triathlon Series, a series of races that was to be the successor of the World Championship. Meanwhile, the World Cup was relegated to become a second tier series, as a result the number of races in the World Cup were reduced. Since the reformat, points earned in World Cup racing are now applied only to an athlete's World Ranking.
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.
The World Triathlon Long Distance Championships is a triathlon race held annually since 1994. The championships involve a continuous swim-cycle-run, over distances varying between that of an Olympic-distance and an Iron-distance triathlon race. The championships are organised by World Triathlon.
The Dextro Energy Triathlon – ITU World Championship Series 2010 was a series of six World Championship Triathlon Events leading to a Grand Final held in Budapest, Hungary in September 2010. The Series was organised under the auspices of the world governing body of triathlon – the International Triathlon Union (ITU) – and was sponsored by the company Dextro Energy.
İstanbul Teknik Üniversitesi B.K., commonly abbreviated as İTÜ BK or simply İTÜ, is a Turkish professional basketball club that is based in Istanbul, Turkey. It is one of the most successful clubs in the history of the Turkish Basketball League, having won the league championship five times. Their home arena is the ITU Ayazaga Sports Center in Istanbul Technical University's Maslak campus.
Non Stanford is a British triathlete. Stanford was the ITU World Champion in 2013 and represented Team GB at the 2016 Olympic Games in Rio de Janeiro, where she finished fourth. Non Stanford is based in Leeds, England and was born in Bridgend, Wales.
Nicky Samuels is a New Zealand professional triathlete who has won the 2013 XTERRA Triathlon World Championship and the 2012 ITU Aquathlon World Championships. She is also the 2012 New Zealand cycling road race national champion. She represented—alongside Andrea Hewitt—New Zealand at the 2016 Summer Olympics in triathlon and came 13th.
The World Triathlon Mixed Relay Championships, is an annual team triathlon competition organized by World Triathlon. The competition is completed in teams of four, two men and two women, with each member doing a super-sprint distance triathlon.
The World Triathlon Championship Series is World Triathlon's annual series of triathlon events used to crown an annual world champion. 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 over two distances the standard and the sprint distance.
Nic Beveridge is an elite Australian triathlete with a disability. He represented Australia at the 2016 Rio Paralympics when Triathlon made its debut at the Games and 2020 Tokyo Paralympics. He represented Australia at the 2018 Gold Coast Commonwealth Games where he won a silver medal.