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.
Yuliya Andreyevna Yefimova is a Russian competitive swimmer. She is the Russian record holder in the 200 metre individual medley, 50 metre breaststroke, 100 metre breaststroke, and 200 metre breaststroke. After making her Olympic debut in 2008, she went on to win the bronze medal in the 200 metre breaststroke in 2012, and silver medals in the 100 metre and 200 metre breaststroke in 2016. She is a six-time World Champion, winning the 50 metre breaststroke in 2009 and 2013, the 100 metre breaststroke in 2015, and the 200 metre breaststroke in 2013, 2017, and 2019. In 2019, she became the first woman to win the 200 metre breaststroke at a FINA World Aquatics Championships three times. She is a former world record holder in the long course 50 metre breaststroke. She has won 109 medals, including 48 gold medals, at Swimming World Cups.
This article includes the world record progression for the 4×100 metres medley relay, and it shows the chronological history of world record times in that competitive swimming event. The 4×100 metres medley relay is a medley race in which each of four swimmers on a team swims a 100-metre leg of the relay, each swimming a different stroke, in the following sequence:
- Backstroke ;
- Breaststroke;
- Butterfly;
- Freestyle.
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.
The Women's 400 Individual Medley at the 10th FINA World Swimming Championships (25m) was swum on 15 December 2010 in Dubai, United Arab Emirates. 28 swimmers swam in the morning preliminary heats, from which the top-8 advanced to the final that evening.
The Women's 4×100 Medley Relay at the 10th FINA World Swimming Championships (25m) was swum on 17 December 2010 in Dubai, United Arab Emirates. 21 nations swam in the preliminary heats, with the top-8 advancing to swim again in the final.
The Women's 100 Individual Medley at the 10th FINA World Swimming Championships (25m) took place 16 – 17 December 2010 in Dubai, United Arab Emirates. The preliminary heats and semifinals were swum on 16 December; the final on 17 December.
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 individual medley event at the 11th FINA World Swimming Championships (25m) took place 13 December 2012 at the Sinan Erdem Dome.
The women's 4x100 metre medley relay event at the 11th FINA World Swimming Championships (25m) took place 14 December 2012 at the Sinan Erdem Dome.
The women's 400 metre freestyle event at the 11th FINA World Swimming Championships (25m) took place 14 December 2012 at the Sinan Erdem Dome.
The men's 4×100 metre medley relay event at the 11th FINA World Swimming Championships (25m) took place 16 December 2012 at the Sinan Erdem Dome.
The women's 100 metre individual medley event at the 11th FINA World Swimming Championships (25m) took place 13 – 14 December 2012 at the Sinan Erdem Dome.
The men's 200 metre individual medley event at the 11th FINA World Swimming Championships (25m) took place 14 December 2012 at the Sinan Erdem Dome. The event was won by American Ryan Lochte. In the final, Lochte broke his own world record of 1:50.08 set in 2010 with a time of 1:49.63, thus becoming the first individual under 1:50 in the event.
The women's 200 metre individual medley event at the 11th FINA World Swimming Championships (25m) took place 15 December 2012 at the Sinan Erdem Dome.
The men's 100 metre individual medley event at the 11th FINA World Swimming Championships (25m) took place 15 – 16 December 2012 at the Sinan Erdem Dome. The final was won by American Ryan Lochte in a time of 51.21. In the semifinals, Lochte broke Peter Mankoč's world record of 50.76 set in 2009 with a time of 50.71.
Daiya Seto is a Japanese professional swimmer who specializes in individual medley, butterfly, breaststroke, and freestyle events. He won the gold medal in the 400-metre individual medley at the 2012, 2014, 2016, 2018, and 2021 world short course championships, as well as at the 2013, 2015, and 2019 world long course championships. Seto holds the world record in the short course 400-metre individual medley.
Amanda Lim is a Singaporean freestyle swimmer.
Travis Mahoney is an Australian medley and backstroke swimmer. Winner of two relay medals at the 2012 World Short Course Championships, he is also part of the quartet that broke the world record in the short course mixed 4 × 50 metres freestyle relay. In 2016, he qualified for his first Olympic Games.
