The FINA World Junior Swimming Championships is a swimming championship event organized by FINA for girls aged 14–17 and boys aged 15–18 on 31 December of the year of the competition. It is held biennially, and has been held since 2006.
The European Junior Swimming Championships is an annual swimming competition for European swimmers organized by the Ligue Européenne de Natation and held over five days. The competitor age for females was 15 to 16 years; for males it is 17 to 18 years until 2015. From 2016 the competitor age is for females 14 to 17 years and for males 15 to 18 years.
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.
The men's 50 metre butterfly event in swimming at the 2013 World Aquatics Championships took place on 28–29 July at the Palau Sant Jordi in Barcelona, Spain.
The Men's 50 metre breaststroke competition of the 2016 FINA World Swimming Championships was held on 10 and 11 December 2016.
The Women's 50 metre freestyle competition of the 2016 FINA World Swimming Championships was held on 10 and 11 December 2016.
The Men's 50 metre freestyle competition at the 2017 World Championships was held on 28 and 29 July 2017.
The Men's 50 metre backstroke competition at the 2017 World Championships was held on 29 and 30 July 2017.
The Men's 50 metre breaststroke competition at the 2017 World Championships was held on 25 and 26 July 2017.
The Men's 50 metre butterfly competition at the 2017 World Championships was held on 23 and 24 July 2017.
The Men's 100 metre butterfly competition at the 2017 World Championships was held on 28 and 29 July 2017.
The Women's 100 metre freestyle competition at the 2017 World Championships was held on 27 and 28 July 2017.
The Women's 50 metre backstroke competition at the 2017 World Championships was held on 26 and 27 July 2017.
The Women's 100 metre backstroke competition at the 2017 World Championships was held on 24 and 25 July 2017.
The Women's 200 metre backstroke competition at the 2017 World Championships was held on 28 and 29 July 2017.
The Women's 50 metre breaststroke competition at the 2017 World Championships was held on 29 and 30 July 2017.
The Women's 200 metre breaststroke competition at the 2017 World Championships was held on 27 and 28 July 2017.
The Women's 50 metre butterfly competition at the 2017 World Championships was held on 28 and 29 July 2017.
The Women's 100 metre butterfly competition at the 2017 World Championships was held on 23 and 24 July 2017.
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.
