Swimming has been a sport at every modern Summer Olympics. It has been open to women since 1912. At the Olympics, swimming has the second-highest number of medal-contested events.
Thailand competed at the 1976 Summer Olympics in Montreal, Quebec, Canada. Forty-two competitors, 39 men and 3 women, took part in 33 events in 11 sports.
Great Britain, represented by the British Olympic Association (BOA), competed at the 1980 Summer Olympics in Moscow, Russian SFSR, Soviet Union. British athletes have competed in every Summer Olympic Games. 219 competitors, 149 men and 70 women, took part in 145 events in 14 sports.
Australia was represented at the 2002 Commonwealth Games by a team selected by the Australian Commonwealth Games Association (ACGA) and abbreviated AUS.
The 4 × 100 metres relay or sprint relay is an athletics track event run in lanes over one lap of the track with four runners completing 100 metres each. The first runners must begin in the same stagger as for the individual 400 m race. Each runner carries a relay baton. Before 2018, the baton had to be passed within a 20 m changeover box, preceded by a 10-metre acceleration zone. With a rule change effective November 1, 2017, that zone was modified to include the acceleration zone as part of the passing zone, making the entire zone 30 metres in length. The outgoing runner cannot touch the baton until it has entered the zone, and the incoming runner cannot touch it after it has left the zone. The zone is usually marked in yellow, frequently using lines, triangles or chevrons. While the rule book specifies the exact positioning of the marks, the colours and style are only "recommended". While most legacy tracks will still have the older markings, the rule change still uses existing marks. Not all governing body jurisdictions have adopted the rule change.
Hungary competed at the 1988 Summer Olympics in Seoul, South Korea. The nation returned after the Soviet bloc boycott of the 1984 Summer Olympics. 188 competitors, 152 men and 36 women, took part in 135 events in 20 sports.
Thailand competed at the 1992 Summer Olympics in Barcelona, Spain.
The 1972 Summer Olympics were held in Munich, West Germany, 29 events in swimming were contested. There was a total of 532 participants from 52 countries competing.
The swimming competitions at the 1968 Summer Olympics in Mexico City took place from 17 to 26 October at the Alberca Olímpica Francisco Márquez. Swimming featured a record total of 29 events. There was a total of 468 participants from 51 countries competing. The United States dominated the competition, winning 52 of 87 possible medals. 15-year-old American phenom Debbie Meyer from Maryland won three gold medals.
At the 1964 Summer Olympics in Tokyo, eighteen swimming events were contested, ten for men and eight for women. There were a total of 405 participants from 42 countries competing. For the first time, the 4 × 100 metres freestyle relay for men and the 400 metres individual medley for both men and women were contested. Olympic records were broken in all events and the world record was broken in ten events. This competition also marked the debut of electronic touchpads for timing.
Vissanu Sophanich is a track and field sprint athlete who competed internationally for Thailand. He was on the Thai team in the Men's 4 x 100 metre relay at the 2000 Summer Olympics.
Aaron Brown is a Canadian sprinter who specializes in the 100 and 200 metres. As part of Canada's 4×100 m relay team, he is the 2024 Olympic gold medalist, 2020 Olympic silver medalist, 2016 Olympic bronze medalist and the 2022 World champion. Brown has also won two World bronze medals as part of Canada's 4×100 m relay teams in 2013 and 2015.
Wachara Sondee is a Thai track and field athlete who competes in sprinting events. He primarily competes in the 100 metres and 60 metres and is the Thai national record holder for the shorter distance with his best of 6.65 seconds.
At the 2001 SEA Games, the athletics events were held in Kuala Lumpur, Malaysia. A total of 46 events were contested, of which 24 by male and 22 by female athletes. The track and field events were hosted at the National Stadium, Bukit Jalil, the marathons were held around Merdeka Square, and the racewalking events took place at Titiwangsa Lake Gardens.
The swimming events of the 15th FINA World Aquatics Championships were held July 28 – August 4, 2013, in Barcelona, Spain. The competition was held in a long course pool inside the Palau Sant Jordi. It featured 40 LCM events, split evenly between males and females. Swimming was one of the five aquatic disciplines at the championships.
The 4 × 100 metres relay at the Summer Olympics is the shortest track relay event held at the multi-sport event. The men's relay has been present on the Olympic athletics programme since 1912 and the women's event has been continuously held since the 1928 Olympic Games in Amsterdam. It is the most prestigious 4×100 m relay race at elite level.
James George Guy is an English competitive swimmer who specialises in freestyle and butterfly. Guy has won multiple gold medals at each of the major international meets available to him, including for Great Britain at the Olympic Games (3), the World (5) and European Championships (7), and for England in the Commonwealth Games (2). In addition to further medals in those events, he has also reached the podium at both the World and European short-course championships. With 46 major medals at international championship meets, 20 at global level, he is one of the most decorated swimmers in British history.
Swimming competitions at the 2015 SEA Games was held at the OCBC Aquatic Centre in the Singapore Sports Hub in Kallang, Singapore from 6 to 11 June 2015. Built only a year earlier, the venue is hosting the SEA Games for the first time. It was used to host the second Southeast Asian Swimming Championships in 2014 as a test bed for the organisers, with the 2015 Southeast Asian Games volunteers hired to also volunteer in the 2014 Swimming Championships to help in the familiarisation of the new venue.
Thomas William Darnton Dean is a British competitive freestyle swimmer. He is a triple Olympic gold medallist, winning gold individually in 200 metre freestyle at the 2020 Summer Olympics and as part of a team in 4 × 200 m freestyle relay at the 2020 Summer Olympics and the 2024 Summer Olympics.
