The biathlon is a winter sport that combines cross-country skiing and rifle shooting. It is treated as a race, with contestants skiing through a cross-country trail whose distance is divided into shooting rounds. The shooting rounds are not timed per se, but depending on the competition, missed shots result in extra distance or time being added to the contestant's total.
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).
A relay race is a racing competition where members of a team take turns completing parts of racecourse or performing a certain action. Relay races take the form of professional races and amateur games. Relay races are common in running, orienteering, swimming, cross-country skiing, biathlon, or ice skating. In the Olympic Games, there are several types of relay races that are part of track and field. Relay race, also called Relay, a track-and-field sport consisting of a set number of stages (legs), usually four, each leg run by a different member of a team. The runner finishing one leg is usually required to pass the next runner a stick-like object known as a "baton" while both are running in a marked exchange zone. In most relays, team members cover equal distances: Olympic events for both men and women are the 400-metre and 1,600-metre relays. Some non-Olympic relays are held at distances of 800 m, 3,200 m, and 6,000 m. In the less frequently run medley relays, however, the athletes cover different distances in a prescribed order—as in a sprint medley of 200, 200, 400, 800 metres or a distance medley of 1,200, 400, 800, 1,600 metres.
Duathlon is an athletic event that consists of a running leg, followed by a cycling leg and then another running leg in a format similar to triathlons. The International Triathlon Union governs the sport internationally.
Due to the nature of triathlons as a race consisting of multiple sports many pieces of technical equipment have been borrowed from other sports, or developed specifically in an effort to race faster and improve a competitors safety.
An aquathlon is a multisport race consisting of continuous run and swim elements. Competitors complete a swim immediately followed by a run over various distances. Athletes compete for fastest overall course completion, including the time transitioning between the disciplines.
The Triathlon competitions at the 2008 Summer Olympics, in Beijing, were held on Monday, August 18 (women) and Tuesday, August 19 (men), on the Triathlon Venue at the Ming Tomb Reservoir in Shisanling.
The men's triathlon was part of the Triathlon at the 2008 Summer Olympics programme. It was the third appearance of the event, which was established in 2000. The competition was held on Tuesday, August 19, 2008 at the Triathlon Venue at the Ming Tomb Reservoir in Shisanling. Fifty-five triathletes from 31 nations competed.
The Ironman Germany is a triathlon race, part of the Ironman series. It is owned and organized by the World Triathlon Corporation (WTC). In 2005, Frankfurt became the new site of the Ironman European Championship.
The triathlon events at the 2012 Summer Olympics were held in Hyde Park in London, United Kingdom, with the women's triathlon held on 4 August and the men's on 7 August. 110 triathletes from 39 countries competed with 55 men and 55 women competing. The races were held over the "international distance" and consisted of 1.5 kilometres (0.93 mi) swimming, 43 kilometres (27 mi) road cycling, and 10 kilometres (6.2 mi) road running.
The men's triathlon was one of the triathlon events at the 2012 Summer Olympics in London, United Kingdom. It took place on 7 August 2012, featuring 55 men from 32 countries. It was the fourth appearance of an Olympic men's triathlon event since the first at the 2000 Olympics in Sydney. The race was around Hyde Park, a 1.42 km2 park in central London. The race was held over the "international distance" and consisted of 1.5 kilometres (0.93 mi) swimming, 42.959 kilometres (26.693 mi) road cycling, and 10 kilometres (6.2 mi) road running.
The women's triathlon was one of the triathlon events at the 2012 Summer Olympics in London, United Kingdom. It took place on 4 August 2012, featuring 55 women from 31 countries. It was the fourth appearance of an Olympic women's triathlon event since the first at the 2000 Olympics in Sydney, Australia. The race was around Hyde Park, a 1.42 km2 park in central London. The race was held over the "international distance" and consisted of 1.5 kilometres (0.93 mi) swimming, 43 kilometres (27 mi) road cycling, and 10 kilometres (6.2 mi) road running.
The Triathlon competitions at the 2014 Commonwealth Games, in Glasgow, were held in Strathclyde Country Park. The men's and women's individual events were held on Thursday 24 July and women's triathlon was the first medal event of the Games. Mixed team relay was held on Saturday 26 July for the first time ever in major multi-sport Games. Marisol Casado, ITU President and IOC member, commented: "We are delighted the Glasgow 2014 Organising Committee has embraced the Triathlon Mixed Relay. Triathlon is on currently on a high in the United Kingdom, and the Mixed Relay will offer an extra opportunity for the people of Glasgow to watch another thrilling and unpredictable event live on their city streets."
The men's triathlon at the 2016 Summer Olympics took place at Fort Copacabana in Rio de Janeiro on 18 August.
The 2017 European Triathlon Championships was held in Kitzbühel, Austria from 16 June to 18 June 2017.
The triathlon competition at the 2019 Southeast Asian Games in the Philippines was held at the Subic Bay Freeport Zone. from 1 to 2 December 2019. The competitions were won by John Chicano and Kim Mangrobang, both of the Philippines.
The duathlon competition at the 2019 Southeast Asian Games in the Philippines was held at the Subic Bay Freeport Zone from 2 to 5 December 2019.
The 2016 European Triathlon Championships was held in Lisbon, Portugal from 26 May to 29 May 2016.
The men's triathlon at the 2020 Summer Olympics took place at the Odaiba Marine Park in Tokyo on 26 July.
The women's triathlon at the 2020 Summer Olympics took place at the Odaiba Marine Park in Tokyo on 27 July 2021.
David Hauss (FRA)
Sven Riederer (SUI)
Kristian Blummenfelt (NOR)
Annamaria Mazzetti (ITA)
Ainhoa Murua Zubizarreta (ESP)
United Kingdom 
Lasse Lührs (GER)
Denmark 
