Federica Pellegrini is an Italian retired swimmer. A native of Mirano, in the province of Venice, she held 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.
Kathleen Genevieve Ledecky is an American competitive swimmer. She has won seven Olympic gold medals and 20 world championship gold medals, the most in history for a female swimmer. Ledecky's six individual gold medals at the Olympics, 15 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 200 metre freestyle event at the 2016 Summer Olympics took place 8–9 August at the Olympic Aquatics Stadium.
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, and the world record holder in the long course 400-metre freestyle event. In 2019 and 2020, she competed representing the Cali Condors in the International Swimming League.
The men's 50 metre freestyle event at the 2020 Summer Olympics was held from 30 July to 1 August 2021 at the Olympic Aquatics Centre. It will be the event's tenth appearance, first held in 1904 and then at every edition since 1988. The event is nicknamed the "splash and dash" event.
The men's 100 metre freestyle event at the 2020 Summer Olympics was held from 27 to 29 July 2021 at the Tokyo Aquatics Centre. There were approximately 60 competitors from approximately 45 nations, with the ultimate numbers determined through the ongoing selection process, including universality places.
The men's 200 metre freestyle event at the 2020 Summer Olympics was held from 25 to 27 July 2021 at the Tokyo Aquatics Centre. There were 39 competitors from 30 nations, with the ultimate numbers determined through the ongoing selection process, including universality places.
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.
The women's 50 metre freestyle event at the 2020 Summer Olympics was held from 30 July to 1 August 2021 at the Olympic Aquatics Centre. It was the event's ninth consecutive appearance, having been held at every edition since 1988.
The women's 100 metre freestyle event at the 2020 Summer Olympics was held from 28 to 30 July 2021 at the Tokyo Aquatics Centre. It was the event's twenty-fifth consecutive appearance, having been held at every edition since 1912.
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 men's 100 metre backstroke event at the 2020 Summer Olympics was held from 25 to 27 July 2021 at the Tokyo Aquatics Centre. It was the event's twenty-sixth appearance, having been held at every edition since 1904 except 1964. Moreover, these Games marked the first time when the men's sprint backstroke event was held in Tokyo, as the event was not included in the swimming program in 1964.
The women's 100 metre backstroke event at the 2020 Summer Olympics was held from 25 to 27 July 2021 at the Tokyo Aquatics Centre. It was the event's twenty-third consecutive appearance, having been held at every edition since 1924. An unusual occurrence happened where the Olympic record for this event was broken three times in a single day and five times through the course of the entire competition.
The women's 200 metre backstroke event at the 2020 Summer Olympics was held from 29 to 31 July 2021 at the Tokyo Aquatics Centre. It will be the event's fourteenth consecutive appearance, having been held at every edition since 1968.
The men's 100 metre breaststroke event at the 2020 Summer Olympics was held from 24 to 26 July 2021 at the Tokyo Aquatics Centre. It will be the event's fourteenth consecutive appearance, having been held at every edition since 1968.
The men's 200 metre breaststroke event at the 2020 Summer Olympics was held from 27 to 29 July 2021 at the Tokyo Aquatics Centre. It was the event's twenty-sixth consecutive appearance, having been held at every edition since 1908.
The men's 200 metre butterfly event at the 2020 Summer Olympics was held in 2021 at the Tokyo Aquatics Centre. It was the event's seventeenth consecutive appearance, having been held at every edition since 1956.
The women's 100 metre butterfly event at the 2020 Summer Olympics was held from 24 to 26 July 2021 at the Tokyo Aquatics Centre. It will be the event's seventeenth consecutive appearance, having been held at every edition since 1956.
The men's 200 metre individual medley event at the 2020 Summer Olympics was held from 28 to 30 July 2021 at the Tokyo Aquatics Centre. It was the event's twelfth appearance, having been first held in 1968 and 1972 and then at every edition since 1984.
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.
