Federica Pellegrini is an Italian retired swimmer. A native of Mirano, in the province of Venice, she holds the women's 200 meters freestyle world record, and won a gold medal at the 2008 Beijing Olympics. At the 2009 World Championships in Rome, Pellegrini became the first woman ever to break the 4-minute barrier in the 400 m freestyle with a time of 3:59.15.
The first world record in the men's 1500 metres freestyle in a long course swimming pool was recognised by the International Swimming Federation (FINA) in 1908. In short course pools, the world's governing body recognizes world records since March 3, 1991.
Melissa Franklin Johnson is an American former competition swimmer and five-time Olympic gold medalist. She formerly held the world record in the 200-meter backstroke. As a member of the U.S. national swim team, she also held the world records in the 4×100-meter medley relay.
Kathleen Genevieve Ledecky is an American competitive swimmer. She has won seven Olympic gold medals and 19 world championship gold medals, the most in history for a female swimmer. Ledecky's six individual gold medals at the Olympics, 14 individual gold medals at the World Aquatics Championships, and 22 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 one of the greatest Olympians and the greatest female swimmer of all time.
The women's 400 metre freestyle event at the 2016 Summer Olympics took place on 7 August, at the Olympic Aquatics Stadium.
The Women's 800 metre freestyle competition of the swimming events at the 2015 World Aquatics Championships was held on 7 August with the heats and 8 August with the final.
Ariarne Elizabeth Titmus, is an Australian swimmer. She is the reigning Olympic champion in the women's 200-metre and 400-metre freestyle, having won both events at the 2020 Summer Olympics, the world record holder in the long course 400-metre freestyle, and formerly the world record holder in the short course 400-metre freestyle. In 2019 and 2020, she competed representing the Cali Condors in the International Swimming League.
Regan Smith is an American competitive swimmer. She is a former world record holder in the women's long course 100-meter backstroke and the 200-meter backstroke. She competed at the 2020 Summer Olympics in three events representing the United States, winning a bronze medal in the 100-meter backstroke, a silver medal in the 200-meter butterfly, and a silver medal in the 4×100-meter medley relay. At the World Aquatics Championships, she won gold medals in the 200-meter backstroke in 2019 and the 100-meter backstroke in 2022.
The women's 800 metre freestyle competition at the 2018 Pan Pacific Swimming Championships took place on August 9 at the Tokyo Tatsumi International Swimming Center. The defending champion was Katie Ledecky of United States.
The women's 400 metre freestyle event at the 2020 Summer Olympics was held from 25 to 26 July 2021 at the Tokyo Aquatics Centre. It was the event's twenty-third consecutive appearance, having been held at every edition since 1924.
The women's 800 metre freestyle event at the 2020 Summer Olympics was held from 29 to 31 July 2021 at the Tokyo Aquatics Centre. It was the event's 14th consecutive appearance, having been held at every edition since 1968. Katie Ledecky won the gold medal, becoming the first person to win the event three consecutive times, as well as the youngest and oldest person to win the 800 free.
The women's 4 × 200 metre freestyle relay event at the 2020 Summer Olympics was held in 2021 at the Tokyo Aquatics Centre. It was the event's seventh consecutive appearance, having been held at every edition since 1996.
The Men's 400 metre freestyle competition at the 2019 World Championships was held on 21 July 2019. The three-time defending champion was Sun Yang, and he successfully defended his title for a record-breaking 4th consecutive victory in the world championships in this event. He became the third man to win an event 4 times at the world championships after Grant Hackett in the 1500 meter freestyle and Ryan Lochte in the 200 meter individual medley.
The Women's 400-metre freestyle competition at the 2019 World Championships was held on 21 July 2019. Ariarne Titmus overcame a 0.62-second deficit in the last 50 metres to defeat defending champion Katie Ledecky. This was Ledecky's first loss in a major international 400 metre freestyle competition.
The Women's 800-metre freestyle competition at the 2019 World Championships was held on 26 and 27 July 2019. Defending champion Katie Ledecky successfully defended her title in 8:13.58 with a final lap comeback against Italy's Simona Quadarella.
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.
Swimming at the 2022 World Aquatics Championships took place from 18 to 25 June 2022. The United States won the most gold medals (17) and overall medal count (45) in this discipline. Katie Ledecky of the United States and Léon Marchand of France earned FINA Swimmer of the Meet honors based on a scoring system that awards points for top-four finishes.
The 2021 Toyota U.S Open Swimming Championships was held from December 1 to 4, 2021 at Greensboro Aquatic Center in Greensboro, North Carolina, United States. Competition was conducted in a long course (50-meter) pool.
