The World Aquatics Junior Swimming Championships is an international swimming championship event organized biennially by World Aquatics for swimmers aged 14–18 years as of the 31st December of the year of the competition. It is usually held on odd years. Prior to 2023, the event was known as the FINA World Junior Swimming Championships and was open to female swimmers aged 14–17 and male swimmers aged 15–18 as of the 31st of December of the year of the competition.
The United States Swimming National Championships are held annually, in summer. The event is organized by USA Swimming, and is held in a long course (50m) pool. In the past, and as recently as 2007, there were 2 meets annually: a Spring and a Summer Nationals. The Spring meet began as a 25-yard meet, while the Summer meet was long course. Prior to USA Swimming's creation in the late 1970s, the meet was run by the AAU.
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 finals and the qualifying heats of the Women's 100 metres Breaststroke event at the 1998 European Short Course Swimming Championships were held on the first day of the competition, on Friday 11 December 1998 in Sheffield, England.
The Women's 100m Breaststroke at the 2007 World Aquatics Championships took place on 26 March and the evening of 27 March (finals) at the Rod Laver Arena in Melbourne, Australia. 72 swimmers were entered in the event, of which 70 swam.
The heats for the Women's 100m Breaststroke race at the 2009 World Championships took place on Monday, 27 July and Tuesday 28 July (final) at the Foro Italico in Rome, Italy.
The women's 100 metre breaststroke at the 2015 IPC Swimming World Championships was held at the Tollcross International Swimming Centre in Glasgow, United Kingdom from 13–17 July.
