The World Aquatics Junior Swimming Championships is an international swimming championship event organized biennially by World Aquatics for girls and boys who are aged 14–18 on 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 girls who were aged 14–17 and boys who were aged 15–18 on the 31st of December of the year of the competition.
Mireia Belmonte García is a Spanish Olympic, world, and European champion swimmer. She is the world record holder in the short course 200-metre butterfly and 400-metre individual medley. Formerly, she held the world record in the short course 400-metre freestyle, 800-metre freestyle, and 1500-metre freestyle. She was the first Spanish woman to win a gold medal in swimming at an Olympic Games and is widely considered to be the greatest Spanish swimmer of all time.
Ariana Kukors is an American former competition swimmer and former world record holder in the 200-meter individual medley. Ariana now works in private coaching related to athletic performance. Kukors has won a total of seven medals in major international competition, two golds, three silvers, and two bronze spanning the World and the Pan Pacific Championships. She placed fifth in the 200-meter individual medley event at the 2012 Summer Olympics.
Scott Tyler Clary is an American former competition swimmer and Olympic gold medalist. In his Olympic debut at the 2012 Summer Olympics, Clary won gold in the 200-meter backstroke in Olympic record time. In total, he won sixteen medals in major international competitions: three gold, eight silver, and five bronze spanning the Summer Olympics, the FINA World Championships, the Pan Pacific Championships, and the Pan American Games.
The Women's 400m Individual Medley (IM) at the 2007 World Aquatics Championships took place on 1 April at the Rod Laver Arena in Melbourne, Australia. As the event was over 200 meters in length, no semifinals were held in it and the top 8 swimmers from the preliminary heats advance directly to the single final heat. 40 swimmers were entered in the event, of which 48 swam.
The men's 400 metre individual medley event at the 2009 World Aquatics Championships took place on August 2 at the Foro Italico. The heats were held during the morning session and the final were held during the evening session. This swimming event used medley swimming. Because the swimming pool is 50 metres long, this race consisted of eight lengths of the pool. The first two lengths were swum using the butterfly stroke, the second pair with the backstroke, the third pair of lengths in breaststroke, and the final two were freestyle. Unlike other events using freestyle, swimmers could not use butterfly, backstroke, or breaststroke for the freestyle leg; most swimmers use the front crawl in freestyle events.
The swimming portion of the 2011 FINA World Championships was held July 24–31 at the Shanghai Oriental Sports Center in Shanghai, China. Swimming is one of five aquatic disciplines at the championships.
The men's 400 metre freestyle competition of the swimming events at the 2011 World Aquatics Championships took place July 24. The heats and final took place on July 24.
The women's 200 metre individual medley competition of the swimming events at the 2011 World Aquatics Championships took place July 24 and 25. The heats and semifinals took place July 24 and the final was held July 25.
The women's 400 metre freestyle competition of the swimming events at the 2011 World Aquatics Championships took place July 24. The heats and the final took place on July 24.
The men's 200 metre individual medley competition of the swimming events at the 2011 World Aquatics Championships took place July 27 and 28. The heats and semifinals took place July 27 and the final was held July 28.
The men's 400 metre individual medley competition of the swimming events was held on July 31 with the semifinals and the final.
The men's 4 × 100 metre medley relay competition of the swimming events at the 2011 World Aquatics Championships took place July 31. The heats and final took place July 31.
The women's 50 metre freestyle competition of the swimming events at the 2011 World Aquatics Championships was held on July 30 with the heats and the semifinals and July 31 with the final.
The women's 50 metre breaststroke competition of the swimming events at the 2011 World Aquatics Championships was held on July 30 with the heats and the semifinals and July 31 with the final.
The women's 4 x 100 metre medley competition of the swimming events at the 2011 World Aquatics Championships was held on July 30 with the heats and the final.
The women's 400 metre individual medley competition of the swimming events at the 2012 European Aquatics Championships took place May 21. The heats and final took place on May 21.
The women's 200 metre individual medley competition of the swimming events at the 2012 European Aquatics Championships took place May 23 and 24. The heats and semifinals took place on May 23, the final on May 24.
The men's 400 metre individual medley competition of the swimming events at the 2012 European Aquatics Championships took place May 27. The heats and final took place on May 27.
The women's 400 metre individual medley competition at the 2010 Pan Pacific Swimming Championships took place on August 19 at the William Woollett Jr. Aquatics Center. The last champion was Katie Hoff of US.
