World’s Fastest 50m Backstroke – Women’s Long Course

World Record: Kaylee McKeown, Australia, 26.86 – 20 October 2023, World Cup
World Junior Record: Minna Atherton, Australia, 27.49, 7 February 2016, Brisbane Sprint Championships
Commonwealth Record: Kaylee McKeown, Australia, 26.86 – 20 October 2023, World Cup

Top 10 All-time Performers:

1. Kaylee McKeown 26.86
2. Xiang Liu 26.98
3. Jing Zhao 27.06
4. Letian Wan 27.09
5. Kira Toussaint 27.10 / Regan Smith 27.10
6. Yuanhui Fu 27.11
7. Katharine Berkoff 27.12
8. Etiene Medeiros 27.14 
9. Mollie O’Callaghan 27.16

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The chart below compares the World’s Fastest 50m Backstroke – Women’s Long Course swimmers. Swimmers and coaches can looks at the individual Splits, and Stroke Counts.. All swim data has been collected from our team reviewing race footage where possible. Here is Kaylee Mckeown’s new World Record set in Budapest at the 2023 World Aquatics Swimming World Cup.

 

Also here is Kira Toussaint’s Short Course 50m Backstroke World Record swim to view which was performed at the ISL 2020.

Here is the list for comparison for the Women’s 100m Backstroke Long Course.

Women's 50m Backstroke - Long Course
	Kaylee McKeown	Xiang Liu	Jing Zhao	Kira Toussaint	Regan Smith	Yuanhui Fu	Katharine Berkoff	Etiene Medeiros
Height:	5 ft 9 in 175cm	5 ft 11 in 180cm	5 ft 9 in 176cm	5 ft 7 in 174cm	5ft 7in 170cm	5 ft 10 in 177cm		5 ft 6 in 168cm
Weight:	132Ib 60kg	145 Ib 66kg	130 Ib 59kg	159 Ib 72kg	121lb 55kg	148 Ib 67kg		176 Ib 80kg
Country:	AUS	CHN	CHN	NED	USA	CHN	USA	BRA
DOB:	2001-07-12	1996-09-01	1990-12-31	1994-05-22	2002-02-09	1996-01-07	2001-01-28	1991-05-24
Meet:	World Aquatics Swimming World Cup - Budapest 2023	18th Asian Games 2018	13th FINA World Championships 2009	2021 Eindhoven Qualification Meet	World Aquatics Championships - Fukuoka 2023	16th FINA World Championships 2015	2022 USA World Trials	17th FINA World Championships 2017
Strokes	36			40			39
Total Time:	26.86	26.98	27.06	27.10	27.10	27.11	27.12	27.14

Note: World’s Fastest 50m Backstroke – Women’s Long Course Updated March 2025

Additionally, here are our Top 5 Swim Calculators from our web traffic:

1. Swim Pace Calculator – Help you determine your pace, time, and distance based on your goals and performances. Optional settings for MIN/100YDS and MIN/100M
2. Swim Split Calculator/Goal Time Calculator – Breaks the swim down to the individual target splits for Meters racing
3. Yards Goal Calculator – Breaks the swim down to the individual target splits for Yards racing
4. Race Review Calculator – Allows the coach, swimmer or parent to identify the strengths and weaknesses of a race that has been swum.
5. Medley Relay Calculator – This Calculator allows coaches to quickly compose the fastest relay team available to them. Enter up to 6 swimmers, enter their personal bests for each event and then hit calculate. The Medley Relay Calculator will then provide you with the fastest relay combination available to you.