Caeleb Dressel (pictured) holds the most world records in men's swimming with four (two individual and two relays).Léon Marchand holds the most individual world records, with three.Katie Ledecky (pictured) holds two long course world records (three total).Summer McIntosh holds the most individual records, with six.Gretchen Walsh holds the most total records with nine (five individual and four relays).Theworld records in swimming are ratified byWorld Aquatics (formerly known as FINA), the international governing body of swimming. Records can be set inlong course (50 metres) orshort course (25 metres) swimming pools. World Aquatics recognizes world records in the following events for both men and women,[ 1] [ 2]
Freestyle:50m ,100m ,200m ,400m ,800m ,1500m Backstroke:50m ,100m ,200m Breaststroke:50m ,100m ,200m Butterfly:50m ,100m ,200m Individual medley:100m (short course only),200m ,400m Relays:4 × 50 m freestyle relay (short course only),4 × 100 m freestyle ,4 × 200 m freestyle ,4 × 50 m medley relay (short course only),4 × 100 m medley Mixed relays:4 × 50 m mixed freestyle (short course only),4 × 100 m mixed freestyle (long course only),4 × 50 m mixed medley (short course only),4 × 100 m mixed medley The ratification process is described in FINA Rule SW12,[ 1]
Some of the records below were established by swimmers wearingbodysuits or suits made of polyurethane or other non-textile materials allowed in the race pool from February 2008 until December 2009. On the eve of the2009 FINA World Championships in Rome, the international governing body for five Olympic aquatic sports voted to ban the use of bodysuits and all suits made of non-textile materials starting 1 January 2010.[ 3] [ 4] [who? depending onmorphology and physiology.[ 5] best times set by swimmers wearing textile materials have once again overtaken more than half of the world records recognized by World Aquatics.
On 25 July 2013, FINA Technical Swimming Congress voted to allow world records in the long course mixed 400 free relay and mixed 400 medley relay, as well as in six events in short course metres: the mixed 200 medley and 200 free relays, as well as the men's and women's 200 free relays and the men's and women's 200 medley relays.[ 6] [ 7] [ 8]
[ edit ] Event Time Name Nationality Date Meet Location Ref 50m freestyle 20.91 ss César Cielo 18 December 2009 Brazilian Championships São Paulo , Brazil[ 9] [ 10] [ 11] [ 12] 100m freestyle 46.40 Pan Zhanle 31 July 2024 Olympic Games Paris , France[ 13] 200m freestyle 1:42.00 ss Paul Biedermann 28 July 2009 World Championships Rome , Italy[ 14] [ 15] [ 16] 400m freestyle 3:39.96 Lukas Märtens 12 April 2025 Swim Open Stockholm Stockholm , Sweden[ 17] 800m freestyle 7:32.12 ss Zhang Lin 29 July 2009 World Championships Rome , Italy[ 18] [ 19] 1500m freestyle 14:30.67 Bobby Finke 4 August 2024 Olympic Games Paris , France[ 20] [ 21] 50m backstroke 23.55 sf Kliment Kolesnikov 27 July 2023 Russian Cup Kazan , Russia[ 22] 100m backstroke 51.60 Thomas Ceccon 20 June 2022 World Championships Budapest , Hungary[ 24] [ 25] 200m backstroke 1:51.92 ss Aaron Peirsol 31 July 2009 World Championships Rome , Italy[ 26] [ 27] [ 28] 50m breaststroke 25.95 sf Adam Peaty 25 July 2017 World Championships Budapest , Hungary[ 29] [ 30] 100m breaststroke 56.88 sf Adam Peaty 21 July 2019 World Championships Gwangju , South Korea[ 31] [ 32] 200m breaststroke 2:05.48 Qin Haiyang 28 July 2023 World Championships Fukuoka , Japan[ 33] [ 34] 50m butterfly 22.27 Andriy Govorov 1 July 2018 Sette Colli Trophy Rome , Italy[ 35] [ 36] 100m butterfly 49.45 Caeleb Dressel 31 July 2021 Olympic Games Tokyo , Japan[ 37] [ 38] 200m butterfly 1:50.34 Kristóf Milák 21 June 2022 World Championships Budapest , Hungary[ 39] [ 40] 200m individual medley 1:52.69 sf Léon Marchand 30 July 2025 World Championships Singapore , Singapore[ 41] 400m individual medley 4:02.50 Léon Marchand 23 July 2023 World Championships Fukuoka , Japan[ 42] [ 43] 4 × 100 m freestyle relay 3:08.24 ss 11 August 2008 Olympic Games Beijing , China[ 44] [ 45] [ 46] 4 × 200 m freestyle relay 6:58.55 ss 31 July 2009 World Championships Rome , Italy[ 47] [ 48] 4 × 100 m medley relay 3:26.78 1 August 2021 Olympic Games Tokyo , Japan[ 49] [ 50]
Legend:
# – Record awaiting ratification byWorld Aquatics ;Records not set in finals:h – heat;sf – semifinal;r – relay 1st leg;rh – relay heat 1st leg;b – B final;† – en route to final mark;tt – time trial ss – supersuited/non-
textile world record
Event Time Name Nationality Date Meet Location Ref 50m freestyle 23.61 sf Sarah Sjöström 29 July 2023 World Championships Fukuoka , Japan[ 51] [ 52] 100m freestyle 51.71 r Sarah Sjöström 23 July 2017 World Championships Budapest , Hungary[ 53] [ 54] 200m freestyle 1:52.23 Ariarne Titmus 12 June 2024 Australian Olympic Trials Brisbane , Australia[ 55] 400m freestyle 3:54.18 Summer McIntosh 7 June 2025 Canadian Trials Victoria , Canada[ 56] [ 57] 800m freestyle 8:04.12 Katie Ledecky 3 May 2025 TYR Pro Swim Series Fort Lauderdale , United States[ 58] 1500m freestyle 15:20.48 Katie Ledecky 16 May 2018 TYR Pro Swim Series Indianapolis , United States[ 59] [ 60] 50m backstroke 26.86 Kaylee McKeown 20 October 2023 World Cup Budapest , Hungary[ 61] 100m backstroke 57.13 Regan Smith 18 June 2024 U.S. Olympic Trials Indianapolis , United States[ 62] [ 63] 200m backstroke 2:03.14 Kaylee McKeown 10 March 2023 NSW State ChampionshipsSydney , Australia[ 64] [ 65] 50m breaststroke 29.16 Rūta Meilutytė 30 July 2023 World Championships Fukuoka , Japan[ 66] [ 67] 100m breaststroke 1:04.13 Lilly King 25 July 2017 World Championships Budapest , Hungary[ 68] [ 69] 200m breaststroke 2:17.55 Evgeniia Chikunova 21 April 2023 Russian Championships Kazan , Russia[ 70] [ 71] [ 72] 50m butterfly 24.43 Sarah Sjöström 5 July 2014 Swedish Championships Borås , Sweden[ 73] [ 74] 100m butterfly 54.60 Gretchen Walsh 3 May 2025 TYR Pro Swim Series Fort Lauderdale , United States[ 75] 200m butterfly 2:01.81 ss Liu Zige 21 October 2009 Chinese National Games Jinan , China[ 76] [ 77] 200m individual medley 2:05.70 Summer McIntosh 9 June 2025 Canadian Trials Victoria , Canada[ 78] [ 79] 400m individual medley 4:23.65 Summer McIntosh 11 June 2025 Canadian Trials Victoria , Canada[ 80] [ 81] 4 × 100 m freestyle relay 3:27.96 23 July 2023 World Championships Fukuoka , Japan[ 82] [ 83] 4 × 200 m freestyle relay 7:37.50 27 July 2023 World Championships Fukuoka , Japan[ 84] [ 85] 4 × 100 m medley relay 3:49.34 3 August 2025 World Championships Singapore , Singapore[ 86]
Legend:
# – Record awaiting ratification byWorld Aquatics ;Records not set in finals:h – heat;sf – semifinal;r – relay 1st leg;rh – relay heat 1st leg;b – B final;† – en route to final mark;tt – time trial ss – supersuited/non-
textile world record
Legend:
# – Record awaiting ratification byWorld Aquatics ;Records not set in finals:h – heat [ edit ] Event Time Name Nationality Date Meet Location Ref 50m freestyle 19.90 sf Jordan Crooks 14 December 2024 World Championships Budapest , Hungary[ 89] [ 90] 100m freestyle 44.84 Kyle Chalmers 29 October 2021 World Cup Kazan , Russia[ 91] [ 92] [ 93] 200m freestyle 1:38.61 Luke Hobson 15 December 2024 World Championships Budapest , Hungary[ 94] [ 95] 400m freestyle 3:32.25 Yannick Agnel France 15 November 2012 French Nationals Angers , France[ 96] [ 97] 800m freestyle 7:20.46 Daniel Wiffen 10 December 2023 European Championships Otopeni , Romania[ 98] [ 99] 1500m freestyle 14:06.88 Florian Wellbrock 21 December 2021 World Championships Abu Dhabi , United Arab Emirates[ 100] [ 101] 50m backstroke 22.11 Kliment Kolesnikov 23 November 2022 Solidarity Games Kazan , Russia[ 102] [ 103] [ 104] 100m backstroke 48.16 Hubert Kós 25 October 2025 World Cup Toronto , Canada[ 105] 200m backstroke 1:45.12 Hubert Kós 23 October 2025 World Cup Toronto , Canada[ 106] 50m breaststroke 24.95 Emre Sakçı 27 December 2021 Turkish Championships Gaziantep , Turkey[ 107] [ 108] 100m breaststroke 55.28 Ilya Shymanovich 26 November 2021 International Swimming League Eindhoven , Netherlands[ 109] 200m breaststroke 1:59.52 Caspar Corbeau 25 October 2025 World Cup Toronto , Canada[ 110] 50m butterfly 21.32 Noè Ponti 11 December 2024 World Championships Budapest , Hungary[ 111] [ 112] 100m butterfly 47.68 Joshua Liendo 23 October 2025 World Cup Toronto , Canada[ 113] 200m butterfly 1:46.85 Tomoru Honda 22 October 2022 Japanese Championships Tokyo , Japan[ 114] [ 115] 100m individual medley 49.28 Caeleb Dressel 22 November 2020 International Swimming League Budapest , Hungary[ 116] [ 117] 200m individual medley 1:48.88 Léon Marchand 1 November 2024 World Cup Singapore , Singapore[ 118] [ 119] 400m individual medley 3:54.81 Daiya Seto 20 December 2019 International Swimming League Las Vegas , United States[ 120] [ 121] 4 × 50 m freestyle relay 1:21.80 14 December 2018 World Championships Hangzhou , China[ 122] 4 × 50 m freestyle relay 1:20.77 WB[ 123] France 14 December 2008 European Championships Rijeka , Croatia[ 124] 4 × 100 m freestyle relay 3:01.66 10 December 2024 World Championships Budapest , Hungary[ 125] [ 126] 4 × 200 m freestyle relay 6:40.51 13 December 2024 World Championships Budapest , Hungary[ 127] [ 128] 4 × 50 m medley relay 1:29.72 17 December 2022 World Championships Melbourne , Australia[ 129] 4 × 100 m medley relay 3:18.68 15 December 2024 World Championships Budapest , Hungary[ 130] [ 131]
Legend:
# – Record awaiting ratification byWorld Aquatics ;Records not set in finals:h – heat;sf – semifinal;r – relay 1st leg;rh – relay heat 1st leg;b – B final;† – en route to final mark;tt – time trial ss – supersuited/non-
textile world record
WB – world best time swam that will not be ratified by FINA
Event Time Name Nationality Date Meet Location Ref 50m freestyle 22.83 Gretchen Walsh 15 December 2024 World Championships Budapest , Hungary[ 132] [ 133] 100m freestyle 49.93 Kate Douglass 25 October 2025 World Cup Toronto , Canada[ 134] 200m freestyle 1:49.36 Mollie O'Callaghan 24 October 2025 World Cup Toronto , Canada[ 135] 400m freestyle 3:50.25 Summer McIntosh 10 December 2024 World Championships Budapest , Hungary[ 136] [ 137] 800m freestyle 7:54.00 Lani Pallister 25 October 2025 World Cup Toronto , Canada[ 138] [ 139] 1500m freestyle 15:08.24 Katie Ledecky 29 October 2022 World Cup Toronto , Canada[ 140] [ 141] 50m backstroke 25.23 Regan Smith 13 December 2024 World Championships Budapest , Hungary[ 142] [ 143] 100m backstroke 54.02 r, = Regan Smith 15 December 2024 World Championships Budapest , Hungary[ 144] [ 145] 100m backstroke 54.02 = Regan Smith 18 October 2025 World Cup Westmont , United States[ 146] 200m backstroke 1:57.33 Kaylee McKeown 25 October 2025 World Cup Toronto , Canada[ 147] 50m breaststroke 28.37 sf Rūta Meilutytė 17 December 2022 World Championships Melbourne , Australia[ 148] 100m breaststroke 1:02.36 = Rūta Meilutytė Lithuania 12 October 2013 World Cup Moscow , Russia[ 149] 100m breaststroke 1:02.36 = Alia Atkinson 6 December 2014 World Championships Doha , Qatar[ 150] [ 151] 100m breaststroke 1:02.36 = Alia Atkinson 26 August 2016 World Cup Chartres , France[ 152] 200m breaststroke 2:12.50 Kate Douglass 13 December 2024 World Championships Budapest , Hungary[ 153] [ 154] 50m butterfly 23.72 Gretchen Walsh 11 October 2025 World Cup Carmel , United States[ 155] 100m butterfly 52.71 Gretchen Walsh 14 December 2024 World Championships Budapest , Hungary[ 156] [ 157] 200m butterfly 1:59.32 Summer McIntosh 12 December 2024 World Championships Budapest , Hungary[ 158] [ 159] 100m individual medley 55.11 Gretchen Walsh 13 December 2024 World Championships Budapest , Hungary[ 160] [ 161] 200m individual medley 2:01.63 Kate Douglass 10 December 2024 World Championships Budapest , Hungary[ 162] [ 163] 400m individual medley 4:15.48 Summer McIntosh 14 December 2024 World Championships Budapest , Hungary[ 164] [ 165] 4 × 50 m freestyle relay 1:32.50 tt 12 December 2020 Wouda Cup Eindhoven , Netherlands[ 166] 4 × 100 m freestyle relay 3:25.01 10 December 2024 World Championships Budapest , Hungary[ 167] [ 168] 4 × 200 m freestyle relay 7:30.13 12 December 2024 World Championships Budapest , Hungary[ 169] [ 170] 4 × 50 m medley relay 1:42.35 17 December 2022 World Championships Melbourne , Australia[ 171] 4 × 100 m medley relay 3:40.41 15 December 2024 World Championships Budapest , Hungary[ 172] [ 173]
Legend:
# – Record awaiting ratification byWorld Aquatics ;Records not set in finals:h – heat;sf – semifinal;r – relay 1st leg;rh – relay heat 1st leg;b – B final;† – en route to final mark;tt – time trial Legend:
# – Record awaiting ratification byWorld Aquatics ;Records not set in finals:h – heat [ edit ] Nation Record LC SC Total LC SC Total LC SC Total Men Women Mixed 33 6 5 11 6 13 19 2 1 3 10 1 1 5 4 9 7 1 1 3 3 6 5 1 2 3 1 1 1 1 4 3 3 1 1 4 2 2 4 3 2 1 3 3 1 2 3 3 1 1 2 1 1 3 1 2 3 3 3 3 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Total 93 20 24 44 20 24 44 2 3 5
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Retrieved29 December 2024 .^ "Women's 50m Freestyle Final Results" (PDF) . Omega Timing. 15 December 2024. Retrieved25 December 2024 .^ "Video - Women's 50m Freestyle Final" . 15 December 2024. Retrieved25 December 2024 .^ "Women's 100m Freestyle Final Results" (PDF) .Omega Timing . 25 October 2025. Retrieved25 October 2025 .^ "Women's 200m Freestyle Final Results" (PDF) .Omega Timing . 24 October 2025. Retrieved25 October 2025 .^ "Women's 400m Freestyle Final Results" (PDF) . Omega Timing. 10 December 2024. Retrieved10 December 2024 .^ "Video - Women's 400m Freestyle Final" . 10 December 2024. Retrieved13 December 2024 .^ "Women's 800m Freestyle Results" (PDF) . Omega Timing. 25 October 2025. Retrieved25 October 2025 .^ "Women's 800m Freestyle Video" . World Aquatics. 25 October 2025. Retrieved31 October 2025 .^ "Ledecky 1500m Freestyle world record" (PDF) . Omega Timing. 29 October 2022. Retrieved29 October 2022 .^ "Video of Women's 1500m Freestyle Results" . FINA. 29 October 2022. Retrieved31 October 2022 .^ "Women's 50m Backstroke Final Results" (PDF) . Omega Timing. 13 December 2024. Retrieved13 December 2024 .^ "Video - Women's 50m Backstroke Final" . 13 December 2024. Retrieved18 December 2024 .^ "Women's 4x100m Medley Relay Final Results" (PDF) . Omega Timing. 15 December 2024. Retrieved15 December 2024 .^ "Video - Women's 4x100m Medley Relay Final" . Omega Timing. 15 December 2024. Retrieved26 December 2024 .^ "Women's 100m Backstroke Final Results" (PDF) .Omega Timing . 18 October 2025. Retrieved18 October 2025 .^ "Women's 200m Backstroke Final Results" (PDF) .Omega Timing . 25 October 2025. Retrieved25 October 2025 .^ "Women's 50m Breaststroke Semifinals Results" (PDF) . Omega Timing. 17 December 2022. Retrieved17 December 2022 .^ "Women's 100m Breaststroke Result" . Omega Timing. 12 October 2013. Retrieved12 October 2013 .^ "Women's 100m Breaststroke Results" . Omega Timing. 6 December 2014. Retrieved6 December 2014 .^ Alia Atkinson | World Record 100m Breaststroke | 2014 FINA World Swimming Championships Doha FINA . 22 June 2016.Archived from the original on 12 February 2021. Retrieved10 August 2021 – viaYouTube .^ Keith, Braden (26 August 2016)."Alia Atkinson Ties World Record in 100 Breaststroke in Chartres" . Swimswam. Retrieved26 August 2016 . ^ "Women's 200m Breaststroke Final Results" (PDF) . Omega Timing. 13 December 2024. Retrieved13 December 2024 .^ "Video - Women's 200m Breaststroke Final" . 13 December 2024. Retrieved19 December 2024 .^ "Women's 50m Butterfly Final Results" (PDF) .Omega Timing . 11 October 2025. Retrieved11 October 2025 .^ "Women's 100m Butterfly Final Results" (PDF) . Omega Timing. 14 December 2024. Retrieved22 December 2024 .^ "Video - Women's 100m Butterfly Final Results" . 14 December 2024. Retrieved22 December 2024 .^ "Women's 200m Butterfly Final Results" (PDF) . Omega Timing. 12 December 2024. Retrieved12 December 2024 .^ "Video - Women's 200m Butterfly Final" . 12 December 2024. Retrieved17 December 2024 .^ "Women's 100m IM Final Results" (PDF) . Omega Timing. 13 December 2024. Retrieved13 December 2024 .^ "Video - Women's 100m IM Final" . 13 December 2024. Retrieved19 December 2024 .^ "Women's 200m IM Final Results" (PDF) . Omega Timing. 10 December 2024. Retrieved10 December 2024 .^ "Video - Women's 200m IM Final" . 10 December 2024. Retrieved14 December 2024 .^ "Women's 400m IM Final Results" (PDF) . Omega Timing. 14 December 2024. Retrieved14 December 2024 .^ "Video - Women's 400m IM Final" . 14 December 2024. Retrieved23 December 2024 .^ James Sutherland (12 December 2020)."Dutch Women Destroy SCM 200 Free Relay World Record In 1:32.50 (Video)" .swimswam.com . Retrieved15 December 2020 . ^ "Women's 4x100m Freestyle Relay Final Results" (PDF) . Omega Timing. 10 December 2024. Retrieved10 December 2024 .^ "Video - Women's 4x100m Freestyle Relay Final Results" . 10 December 2024. Retrieved1 January 2024 .^ "Women's 4x200m Freestyle Relay Final Results" (PDF) . Omega Timing. 12 December 2024. Retrieved12 December 2024 .^ "Video - Women's 4x200m Freestyle Relay Final" . Omega Timing. 12 December 2024. Retrieved31 December 2024 .^ "Women's 4 × 50 m Medley Relay Final Results" (PDF) . Omega Timing. 17 December 2022. Retrieved17 December 2022 .^ "Women's 4x100m Medley Relay Final Results" (PDF) . Omega Timing. 15 December 2024. Retrieved15 December 2024 .^ "Women's 4x100m Medley Relay Final Results" . Omega Timing. 15 December 2024. Retrieved4 January 2025 .^ "Mixed 4x50m Freestyle Relay Final Results" (PDF) .omegatiming.com . 4 December 2025. Retrieved4 December 2025 .^ "Mixed 4 × 50 m Medley Relay Final Results" (PDF) . 14 December 2022. Retrieved14 December 2022 .^ "Video – Mixed 4 × 50 m Medley Relay Final" . FINA.tv. 14 December 2022. Retrieved20 December 2022 .^ "Mixed 4 × 100 m Medley Relay Final Results" (PDF) . 14 December 2024. Retrieved15 December 2024 .^ "Video - Mixed 4 × 100 m Medley Relay Final Results" . 14 December 2024. Retrieved28 December 2024 .
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