Oussama "Ous" Mellouli is a Tunisian swimmer who competes in the freestyle and medley events. He is a three-time Olympic medalist, is an African record holder, and trains with the USC Trojans team based at the University of Southern California, where he studied as a computer science undergraduate and swam collegiately.
Frederik Carlo Hviid Köhler is a former long-distance freestyle and medley swimmer from Spain who competed at two consecutive Summer Olympics for his native country, starting in 1996. In the late 1990s he won several medals in the international short course and long course events. He's a recipient of the Spanish Cross of the Order of Merit, handed to him by then crown prince Felipe de Borbón.
The men's 400 metre freestyle at the 2007 World Aquatics Championships took place on 25 March at Rod Laver Arena in Melbourne, Australia.
The first world record in the men's 400 metres freestyle in long course (50 metres) swimming was recognised by the International Swimming Federation (FINA) in 1908. In the short course (25 metres) swimming events the world's governing body recognizes world records since 3 March 1991.
The World Aquatics Junior Swimming Championships is an international swimming championship event organized biennially by World Aquatics for swimmers aged 14–18 years as of the 31st December of the year of the competition. It is usually held on odd years. Prior to 2023, the event was known as the FINA World Junior Swimming Championships and was open to female swimmers aged 14–17 and male swimmers aged 15–18 as of the 31st of December of the year of the competition.
The finals and the qualifying heats of the men's 400 metres freestyle event at the 1997 FINA Short Course World Championships were held on the second day of the competition, on Friday 18 April 1997 in Gothenburg, Sweden.
The qualifying heats and the finals of the Men's 400 metres Freestyle event at the European LC Championships 1995 were held on Friday 25 August 1995 in Vienna, Austria.
The finals and the qualifying heats of the men's 400 metre freestyle event at the 1998 World Aquatics Championships were held on Thursday 15 January 1998 in Perth, Western Australia.
The finals and the qualifying heats of the women's 400 metre freestyle event at the 1998 World Aquatics Championships were held on Wednesday 14 January 1998 in Perth, Western Australia.
Chen Yan is a retired Chinese swimmer. She won Gold medal at 4×200m freestyle at 1997 FINA Short Course World Championships. Later that year at Chinese National Games, she broke world record at 400m individual medley. She then won 400m individual medley and 400m freestyle at 1998 Perth World Aquatics Championships. She participated in 1996 and 2000 two Olympic Games but did not medal. Not to be confused with Chen Yan, she has never tested positive in any drug test.
Ryan Napoleon is an Australian freestyle swimmer and Commonwealth Games medallist.
Velimir Stjepanović is a Serbian professional swimmer currently representing DC Trident at the International Swimming League. He has won gold medals at the European Championships, European Short Course Championships and Mediterranean Games.
Kosuke Hagino is a Japanese former competitive swimmer who specialized in the individual medley and 200 m freestyle. He is a four-time Olympic medalist, most notably winning gold in the 400 m individual medley at the 2016 Summer Olympics.
The men's 400 metre freestyle at the 2013 IPC Swimming World Championships was held at the Parc Jean Drapeau Aquatic Complex in Montreal from 12–18 August.
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 (2), the World (5) and European Championships (7), and 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 45 major medals at international championship meets, 19 at global level, he is one of the most decorated swimmers in British history.
Guy Harrison-Murray is an Australian Paralympic swimmer. He represented Australia at the 2016 Rio Paralympics.
The men's 400 metre freestyle at the 2015 IPC Swimming World Championships was held at the Tollcross International Swimming Centre in Glasgow, United Kingdom from 13–17 July.
The 2016 IPC Swimming European Championships was an international swimming competition. It was held in Funchal, Madeira running from 30 April to 7 May. Around 450 athletes from 50 different countries attended the competition. This was the last major swimming tournament for disabled athletes prior to the 2016 Summer Paralympics in Rio, and acted as a qualifying event for the Rio Games. To increase the possibility of qualification for top swimmers, the championships was made an Open tournament allowing competitors from countries outside Europe to compete.
