Kate Marie Ziegler is an American competition swimmer who specializes in freestyle and long-distance events. Ziegler has won a total of fifteen medals in major international competition, including eight golds, five silvers, and two bronzes spanning the World Aquatics and the Pan Pacific Championships. She was a member of the 2012 United States Olympic team, and competed in the 800-meter freestyle event at the 2012 Summer Olympics.
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.
Luiz Eduardo Carneiro da Silva de Souza Lima is a long-distance freestyle swimmer and Federal Deputy of Rio de Janeiro from Brazil, who competed at two consecutive Summer Olympics for his native country, starting in 1996. He won the gold medal in the 400-metre freestyle at the 1999 Pan American Games.
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.
Timothy Andrew Shaw is an American former Olympic medal-winning swimmer and water polo player. He swam at the 1976 Summer Olympics and played on the American team at the 1984 Summer Olympics. He is one of a handful of athletes to win Olympic medals in two different sports. Between 1974 and 1984, Shaw won two Olympic silver medals; three world championships; seven U.S. Amateur Athletic Union national titles; and three U.S. National Collegiate Athletic Association championships.
Chloe Elizabeth Sutton Mackey is an American retired competition swimmer who specializes in freestyle and long-distance events. Sutton represented the United States at two consecutive Olympic Games. Sutton has won a total of five medals in major international competition, three gold, one silver, and one bronze spanning the Open Water Championships, Pan Pacific Championships, and Pan American Games. She was a member of the 2012 United States Olympic team, and competed in the 400-meter freestyle at the 2012 Summer Olympics.
Michael Klueh is an American competition swimmer. He is a four-time medalist at the World Championships. He is also an eight-time medalist at the World University Games. Klueh competed for the University of Texas from 2005 to 2009 where he was a 2009 NCAA champion as a member of the 4x200 yard freestyle relay. He is a former American record holder in the 800 short course meter freestyle and former Texas 5A state high school record-holder in the 500-yard freestyle. Klueh is currently an orthopaedic surgery resident at the University of Michigan Medical School.
Pál Joensen is a Faroese elite swimmer. He was born in Vágur, Suðuroy, Faroe Islands. He has won World and European Championship medals. His bronze medal in the men's 1500 metre freestyle at the 2012 FINA World Swimming Championships in Istanbul was the first medal won by a Faroese swimmer at the World Aquatic Championships.
Sharon van Rouwendaal is a Dutch swimmer and the Olympic gold medalist in the 10 km open water marathon at the 2016 Olympics in Rio de Janeiro and the 2024 Olympics in Paris.
Gregorio Paltrinieri is an Italian competitive swimmer. He is a former world record holder in the short course 1500 metre freestyle. He holds the European record in the long course 800 metre and 1500 metre freestyle events with times of 7:39.27 and 14:32.80, respectively. In the 1500 metre freestyle, he is a 2016 Olympic, three-time world long course, two-time world short course, three-time European long course, and three-time European short course champion. In the 800 metre freestyle, he is a 2019 world long course, 2022 world short course, three-time European long course, and 2021 European short course champion. In the 10 kilometre open water swim, he is a 2022 world and 2020 European champion. In the 5 kilometre open water swim, he is a two-time European champion.
Kathleen Genevieve Ledecky is an American competitive swimmer. She has won nine Olympic gold medals and 21 world championship gold medals, the most in history for a female swimmer. With 14 medals and 9 gold medals, she is also the most decorated American woman, most decorated female swimmer, the woman with the most gold medals and fifth-most decorated athlete in Olympic history. She has won a record 16 individual gold medals at the World Aquatics Championships. Ledecky's 10 individual medals at the Olympics and 26 overall medals at the World Aquatics Championships are records in women's swimming. Ledecky is the world record holder in the women's 800- and 1500-meter freestyle, as well as the former world record holder in the women's 400-meter freestyle. She also holds the fastest-ever times in the women's 500-, 1000-, and 1650-yard freestyle events. She is widely regarded as the greatest female swimmer of all time and one of the greatest Olympians of all time.
Connor Lee Jaeger is a former American competition swimmer who specializes in distance freestyle events. Jaeger attended the University of Michigan where he was a three-time All-American. He was a member of the 2012 United States Olympic team, placing sixth in the 1500 metre freestyle at those Olympics, as well as the 2016 United States Olympic team, where he earned a silver medal in the same event. He currently holds the American record in the short course 1500 metre freestyle.
Lucas da Cruz Kanieski is a Brazilian competitive swimmer.
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.
Mackenzie James Horton is an Australian retired freestyle swimmer. He is an Olympic gold medallist, World Championships gold medallist, and 4-time Commonwealth Games gold medallist. At the 2016 Olympic Games in Rio de Janeiro, Brazil, he took the gold in the 400m freestyle, and became the first male swimmer from the state of Victoria to win an Olympic swimming gold in the Games' history.
Li Bingjie is a Chinese swimmer. She is the world record holder in the short course 400 metre freestyle. She is also the Asian record holder in the long course 400 metre freestyle as well as the short course 1500 metre freestyle. She is the 2021 World Short Course champion in the 400 metre freestyle and 800 metre freestyle. At the 2020 Summer Olympics, she won a gold medal in the 4×200 metre freestyle relay and a bronze medal in the 400 metre freestyle.
The men's 800 metre freestyle event at the 2020 Summer Olympics was held on 27 and 29 July 2021 at the Tokyo Aquatics Centre. It was the event's recurrence to the Games for the first time in over a century, having last been held in 1904.
Kathryn Eileen Grimes is an American competitive swimmer. At the 2022 World Aquatics Championships, she won silver medals in the 1500 meter freestyle and the 400 meter individual medley. She placed fourth in the 800 meter freestyle at the 2020 Summer Olympics, where she was the youngest member of the US Olympic Team at 15 years of age.
Ahmed Ayoub Hafnaoui is a Tunisian swimmer. He is the African record holder in the long course 400-metre and 1500-metre freestyle, and the short course 800-metre and 1500-metre freestyle events. He competed in the 2020 Summer Olympics, where he won a gold medal in the men's 400-metre freestyle. He ranked No. 16 in the world and was the slowest qualifier for the final race but won Olympic gold with a time of 3:43.36. Hafnaoui was the only Tunisian to win Olympic gold at Tokyo 2020.
Lani Pallister is an Australian competitive swimmer. She is a world record holder in two sports, with a world record in swimming, the short course 4×200-metre freestyle relay, and world records in life saving for the youth age group in the 100-metre rescue medley and 200-metre super lifesaver. She holds the Oceanian, Commonwealth, and Australian records in the short course 1500-metre freestyle and the Australian record in the short course 800-metre freestyle. She is the first female World Short Course champion in the 1500-metre freestyle, winning the inaugural event for women at the 2022 edition. Over the course of the 2022 World Short Course Championships, she won the gold medal in each of the four events she contested.
United States 
