List of junior world records in swimming

The Junior World Records in Swimming are the fastest times ever swum by a "junior" swimmer, with junior defined as the following ages (age as of December 31 of the year of the swim):

• girls - 18 years old or younger
• boys - 18 years old or younger

These records are kept/maintained by the FINA (now World Aquatics), and were initially established in March 2014 and based on the meet records from the Junior Worlds meet. ^[1]

Note: in some cases, there were existing world records (e.g. Katie Ledecky's 400, 800 and 1500 m freestyle, Rūta Meilutytė's 100 m breaststroke) that were not considered for these records (but were faster). Likewise more historical times by juniors were also not considered (e.g. Mary T. Meagher's 2:05.96 in the 200 m butterfly).

Long Course records can be established by breaking the initial time at a meet after April 1, 2014. ^[2] FINA World Junior Records in 25m pool are recognised starting on January 1, 2015.

Records are recognized for long course (50 m pool) and short course (25 m pool) in the following events:

• freestyle: 50, 100, 200, 400, 800 and 1500;
• backstroke: 50, 100 and 200;
• breaststroke: 50, 100 and 200;
• butterfly: 50, 100 and 200;
• Individual medley: 100 (short course only), 200 and 400;
• relays: 4×50 free (short course only), 4×100 free, 4×200 free, 4×50 medley (short course only) and 4×100 medley.

Also recognized are mixed relay records for 4 × 100 medley and free relays.

All records were swum in finals unless noted otherwise.

Long Course (50 m)

Boys

Event	Time		Name	Nationality	Date	Meet	Location	Ref
50m freestyle	21.75	h, =	Michael Andrew	United States	25 August 2017	World Junior Championships	Indianapolis, United States	[3]
50m freestyle	21.75	=	Michael Andrew	United States	26 August 2017	World Junior Championships	Indianapolis, United States	[4]
100m freestyle	46.86		David Popovici	Romania	13 August 2022	European Championships	Rome, Italy	[5]
200m freestyle	1:42.97		David Popovici	Romania	15 August 2022	European Championships	Rome, Italy	[6] link
400m freestyle	3:44.31		Petar Mitsin	Bulgaria	9 July 2023	European Junior Championships	Belgrade, Serbia	[7]
400m freestyle	3:40.59	not ratified, fastest all-time junior	Ian Thorpe	Australia	16 September 2000	Olympic Games	Sydney, Australia
800m freestyle	7:43.37		Lorenzo Galossi	Italy	13 August 2022	European Championships	Rome, Italy	[8]
1500m freestyle	14:46.09		Franko Grgić	Croatia	25 August 2019	World Junior Championships	Budapest, Hungary	[9]
50m backstroke	24.00		Kliment Kolesnikov	Russia	4 August 2018	European Championships	Glasgow, United Kingdom	[10]
100m backstroke	52.53		Kliment Kolesnikov	Russia	6 August 2018	European Championships	Glasgow, United Kingdom	[11]
100m backstroke	52.34	'#'	Miron Lifincev	Russia	15 April 2024	Russian Championships	Kazan, Russia	[12]
200m backstroke	1:55.14		Kliment Kolesnikov	Russia	28 July 2017	World Championships	Budapest, Hungary	[13]
200m backstroke	1:54.77	not ratified, fastest all-time junior	Ryosuke Irie	Japan	7 June 2008	Japan Open	Tokyo, Japan
50m breaststroke	26.97	h	Nicolò Martinenghi	Italy	4 April 2017	Italian Championships	Riccione, Italy	[14]
100m breaststroke	59.01	sf	Nicolò Martinenghi	Italy	23 August 2017	World Junior Championships	Indianapolis, United States	[15]
200m breaststroke	2:08.04		Dong Zhihao	China	28 July 2023	World Championships	Fukuoka, Japan	[16]
200m breaststroke	2:07.35	not ratified	Qin Haiyang	China	4 September 2017	National Games	Tianjin, China	[17]
200m breaststroke	2:07.01	not ratified, fastest all-time junior	Akihiro Yamaguchi	Japan	15 September 2012	National Sports Festival	Gifu, Japan
50m butterfly	22.96		Diogo Ribeiro	Portugal	3 September 2022	World Junior Championships	Lima, Peru	[18] link
100m butterfly	50.62		Kristóf Milák	Hungary	29 July 2017	World Championships	Budapest, Hungary	[19]
200m butterfly	1:53.79		Kristóf Milák	Hungary	30 June 2017	European Junior Championships	Netanya, Israel	[20]
200m butterfly	1:52.71	not ratified, fastest all-time junior	Kristóf Milák	Hungary	28 March 2018	Hungarian Championships	Debrecen, Hungary	[21]
200m individual medley	1:56.99	sf	Hubert Kós	Hungary	19 May 2021	European Championships	Budapest, Hungary	[22]
200m individual medley	1:55.94	not ratified, fastest all-time junior	Michael Phelps	United States	9 August 2003	USA Championships	College Park, United States	[23]
400m individual medley	4:10.02		Ilya Borodin	Russia	23 May 2021	European Championships	Budapest, Hungary	[24]
400m individual medley	4:08.94	not ratified, fastest all-time junior	Kosuke Hagino	Japan	28 July 2012	Olympic Games	London, United Kingdom
4 × 100m freestyle relay	3:15.49		Daniel Diehl  (49.93) Maximus Williamson  (47.78) Hudson Williams  (49.14) Jason Zhao  (48.64)	United States	4 September 2023	World Junior Championships	Netanya, Israel	[25]
4 × 200m freestyle relay	7:08.37		Jake Magahey  (1:48.11) Luca Urlando  (1:47.13) Jake Mitchell  (1:47.03) Carson Foster  (1:46.10)	United States	23 August 2019	World Junior Championships	Budapest, Hungary	[26]
4 × 100m medley relay	3:33.19		Nikolay Zuev  (53.84) Vladislav Gerasimenko  (59.53) Andrey Minakov  (50.93) Aleksandr Shchegolev  (48.89)	Russia	25 August 2019	World Junior Championships	Budapest, Hungary	[27]

Legend: # – Record awaiting ratification by FINA;WR – World record;
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

Girls

Event	Time		Name	Nationality	Date	Meet	Location	Ref
50m freestyle	24.17		Claire Curzan	United States	14 May 2021	TAC Titans Spring Invitational Meet	Cary, United States	[28]
50m freestyle	23.99	not ratified, fastest all-time junior	Cate Campbell	Australia	2 August 2009	World Championships	Rome, Italy	[29]
100m freestyle	52.70		Penny Oleksiak	Canada	11 August 2016	Olympic Games	Rio de Janeiro, Brazil	[30]
100m freestyle	52.49	not ratified, fastest all-time junior	Mollie O'Callaghan	Australia	18 May 2022	Australian Championships	Adelaide, Australia
200m freestyle	1:53.65		Summer McIntosh	Canada	26 July 2023	World Championships	Fukuoka, Japan	[31]
400m freestyle	3:56.08		Summer McIntosh	Canada	28 March 2023	Canadian Trials	Toronto, Canada	[32]
800m freestyle	8:11.00		Katie Ledecky	United States	22 June 2014	Woodlands Senior Invitational Meet	Shenandoah, United States	[33]
800m freestyle	8:07.39	not ratified, fastest all-time junior	Katie Ledecky	United States	8 August 2015	World Championships	Kazan, Russia
1500m freestyle	15:28.36		Katie Ledecky	United States	24 August 2014	Pan Pacific Championships	Gold Coast, Australia	[34]
1500m freestyle	15:25.48	not ratified, fastest all-time junior	Katie Ledecky	United States	4 August 2015	World Championships	Kazan, Russia
50m backstroke	27.49		Minna Atherton	Australia	7 February 2016	Brisbane Sprint Championships	Brisbane, Australia	[35]
50m backstroke	27.22	not ratified, fastest all-time junior	Fu Yuanhui	China	1 April 2013	Chinese Nationals	Zhengzhou, China
100m backstroke	57.57	r	Regan Smith	United States	28 July 2019	World Championships	Gwangju, South Korea	[36]
200m backstroke	2:03.35	sf	Regan Smith	United States	26 July 2019	World Championships	Gwangju, South Korea	[37]
50m breaststroke	29.30	sf	Benedetta Pilato	Italy	22 May 2021	European Championships	Budapest, Hungary	[38]
100m breaststroke	1:04.35	sf, ER	Rūta Meilutytė	Lithuania	29 July 2013	World Championships	Barcelona, Spain	[39] [40]
200m breaststroke	2:19.64		Viktoriya Zeynep Gunes	Turkey	30 August 2015	World Junior Championships	Singapore, Singapore	[41]
50m butterfly	25.46		Rikako Ikee	Japan	26 August 2017	World Junior Championships	Indianapolis, United States	[42]
50m butterfly	25.11	not ratified, fastest all-time junior	Rikako Ikee	Japan	10 June 2018	Mare Nostrum	Canet-en-Roussillon, France
100m butterfly	56.43		Claire Curzan	United States	14 May 2021	TAC Titans Spring Invitational Meet	Cary, United States
100m butterfly	56.20	not ratified	Claire Curzan	United States	10 April 2021	TAC Titans Premier Invitational	Cary, United States	[43]
100m butterfly	56.43	not ratified	Claire Curzan	United States	14 June 2021	US Olympic Team Trials - Wave II	Omaha, United States	[44]
100m butterfly	56.06	not ratified, fastest all-time junior	Sarah Sjöström	Sweden	27 July 2009	World Championships	Rome, Italy	[45]
200m butterfly	2:04.06		Summer McIntosh	Canada	27 July 2023	World Championships	Fukuoka, Japan	[46]
200m individual medley	2:06.89		Summer McIntosh	Canada	30 March 2023	Canadian Trials	Toronto, Canada	[47]
400m individual medley	4:25.87	WR	Summer McIntosh	Canada	1 April 2023	Canadian Trials	Toronto, Canada	[48]
400m individual medley	4:24.38	WR, #	Summer McIntosh	Canada	16 May 2024	Canadian Trials	Toronto, Canada	[49]
4 × 100m freestyle relay	3:36.19		Taylor Ruck  (53.63) Penny Oleksiak  (53.70) Rebecca Smith  (54.65) Kayla Sanchez  (54.21)	Canada	27 August 2017	World Junior Championships	Indianapolis, United States	[50]
4 × 200m freestyle relay	7:51.47		Kayla Sanchez  (1:59.01) Penny Oleksiak  (1:56.86) Rebecca Smith  (1:58.66) Taylor Ruck  (1:56.94)	Canada	23 August 2017	World Junior Championships	Indianapolis, United States	[51]
4 × 100m medley relay	3:58.38		Jade Hannah  (1:00.68) Faith Knelson  (1:07.86) Penny Oleksiak  (56.91) Taylor Ruck  (52.93)	Canada	28 August 2017	World Junior Championships	Indianapolis, United States	[52]

Legend: # – Record awaiting ratification by FINA;
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

Mixed

Event	Time		Name	Nationality	Date	Meet	Location	Ref
4 × 100 m freestyle relay	3:24.29		Flynn Southam  (48.58) Edward Sommerville  (48.54) Olivia Wunsch  (53.62) Milla Jansen  (53.55)	Australia	6 September 2023	World Junior Championships	Netanya, Israel	[53]
4 × 100 m medley relay	3:44.84		William Grant  (53.89) Josh Matheny  (59.31) Torri Huske  (58.04) Gretchen Walsh  (53.60)	United States	21 August 2019	World Junior Championships	Budapest, Hungary	[54]

Legend: # – Record awaiting ratification by FINA;WR – World record;
Records not set in finals: h – heat

Short Course (25 m)

Boys

Event	Time		Name	Nationality	Date	Meet	Location	Ref
50m freestyle	20.98		Kenzo Simons	Netherlands	22 December 2019	Dutch Championships	Tilburg, Netherlands	[55]
50m freestyle	20.70	rh, not ratified, fastest all-time junior	Evgeny Sedov	Russia	6 December 2014	World Championships	Doha, Qatar
100m freestyle	45.64		David Popovici	Romania	15 December 2022	World Championships	Melbourne, Australia	[56]
200m freestyle	1:40.65		Matthew Sates	South Africa	3 October 2021	World Cup	Berlin, Germany	[57]
200m freestyle	1:40.08	not ratified, fastest all-time junior	Danila Izotov	Russia	13 December 2009	European Championships	Istanbul, Turkey
400m freestyle	3:37.92		Matthew Sates	South Africa	7 October 2021	World Cup	Budapest, Hungary	[58]
400m freestyle	3:35.64	not ratified, fastest all-time junior	Ian Thorpe	Australia	2 April 1999	World Championships	Hong Kong, Hong Kong
800m freestyle	7:36.00		Sven Schwarz	Germany	16 November 2019	German Championships	Berlin, Germany	[59]
1500m freestyle	14:27.78		Gregorio Paltrinieri	Italy	24 November 2012	European Championships	Chartres, France
1500m freestyle	14:19.55	not ratified, fastest all-time junior	Grant Hackett	Australia	27 September 1998	Australian Championships	Perth, Australia
50m backstroke	22.52		Isaac Cooper	Australia	15 December 2022	World Championships	Melbourne, Australia	[60]
100m backstroke	48.90		Kliment Kolesnikov	Russia	22 December 2017	Vladimir Salnikov Cup	Saint Petersburg, Russia	[61]
200m backstroke	1:48.02		Kliment Kolesnikov	Russia	13 December 2017	European Championships	Copenhagen, Denmark	[62]
50m breaststroke	25.85		Simone Cerasuolo	Italy	30 November 2021	Italian Championships	Riccione, Italy	[63] [64]
100m breaststroke	56.66		Simone Cerasuolo	Italy	1 December 2021	Italian Championships	Riccione, Italy	[65] [66]
200m breaststroke	2:03.23		Akihiro Yamaguchi	Japan	14 December 2012	World Championships	Istanbul, Turkey
50m butterfly	22.34		Andrei Minakov	Russia	18 December 2020	Russian Championships	Saint Petersburg, Russia	[67]
100m butterfly	49.53		Li Zhuhao	China	19 November 2017	World Cup	Singapore, Singapore	[68]
200m butterfly	1:49.61		Chen Juner	China	28 October 2022	Chinese Championships	Beijing, China	[69]
100m individual medley	50.63		Kliment Kolesnikov	Russia	14 December 2018	World Championships	Hangzhou, China	[70]
200m individual medley	1:51.45		Matthew Sates	South Africa	2 October 2021	World Cup	Berlin, Germany	[71]
400m individual medley	3:56.47		Ilya Borodin	Russia	20 December 2021	World Championships	Kazan, Russia	[72]
4×50m freestyle relay	1:27.46
4 × 100m freestyle relay	3:12.56
4 × 200m freestyle relay	6:59.66
4×50m medley relay	1:38.29
4 × 100m medley relay	3:28.05

Legend: # – Record awaiting ratification by FINA;WR – World record;AS – Asian record;
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

Girls

Event	Time		Name	Nationality	Date	Meet	Location	Ref
50m freestyle	23.69	r	Anastasiya Shkurdai	Belarus	18 December 2020	Belarusian Championships	Brest, Belarus	[73]
100m freestyle	51.45	AM	Kayla Sanchez	Canada	14 December 2018	Swim England Winter Championships	Sheffield, United Kingdom	[74]
200m freestyle	1:52.59		Bella Sims	United States	4 November 2022	World Cup	Indianapolis, United States	[75]
200m freestyle	1:52.50	not ratified	Taylor Ruck	Canada	6 December 2016	World Championships	Windsor, Canada	[76]
200m freestyle	1:51.38	not ratified, fastest all-time junior	Ariarne Titmus	Australia	11 December 2018	World Championships	Hangzhou, China
400m freestyle	3:52.80	AM	Summer McIntosh	Canada	28 October 2022	World Cup	Toronto, Canada	[77] [78]
800m freestyle	7:59.44	AS	Wang Jianjiahe	China	6 October 2018	World Cup	Budapest, Hungary	[79]
1500m freestyle	15:42.05		Katie Grimes	United States	4 November 2022	World Cup	Indianapolis, United States	[80]
50m backstroke	26.13		Olivia Smoliga	United States	16 December 2012	World Championships	Istanbul, Turkey
50m backstroke	26.08	'#'	Sara Curtis	Italy	7 April 2024	Italian Junior Championships	Riccione, Italy	[81]
50m backstroke	25.49	not ratified, fastest all-time junior	Mollie O'Callaghan	Australia	14 December 2022	World Championships	Melbourne, Australia
100m backstroke	55.75		Bella Sims	United States	4 November 2022	World Cup	Indianapolis, United States	[82]
100m backstroke	55.62	not ratified, fastest all-time junior	Mollie O'Callaghan	Australia	17 December 2022	World Championships	Melbourne, Australia
200m backstroke	2:00.03		Missy Franklin	United States	22 October 2011	World Cup	Berlin, Germany
50m breaststroke	28.81		Benedetta Pilato	Italy	21 November 2020	International Swimming League	Budapest, Hungary	[83]
50m breaststroke	28.81	not ratified	Ruta Meilutyte	Lithuania	3 December 2014	World Championships	Doha, Qatar
100m breaststroke	1:02.36		Ruta Meilutyte	Lithuania	12 October 2013	World Cup	Moscow, Russia
200m breaststroke	2:16.88		Evgeniia Chikunova	Russia	5 November 2021	European Championships	Kazan, Russia	[84] [85]
50m butterfly	24.55		Claire Curzan	United States	19 December 2021	World Championships	Abu Dhabi, United Arab Emirates	[86]
100m butterfly	55.39		Claire Curzan	United States	21 December 2021	World Championships	Abu Dhabi, United Arab Emirates	[87]
200m butterfly	2:02.96		Suzuka Hasegawa	Japan	14 January 2017	New Year Meet	Tokyo, Japan
100m individual medley	57.59		Anastasiya Shkurdai	Belarus	22 November 2020	International Swimming League	Budapest, Hungary	[88]
200m individual medley	2:04.48		Yu Yiting	China	20 December 2021	World Championships	Abu Dhabi, United Arab Emirates	[89]
400m individual medley	4:21.49		Summer McIntosh	Canada	29 October 2022	World Cup	Toronto, Canada	[90] [91]
4×50m freestyle relay	1:40.59
4 × 100m freestyle relay	3:32.63
4 × 200m freestyle relay	7:43.73
4×50m medley relay	1:44.43	not ratified	Wan Letian  (26.42) Tang Qianting  (28.96) Yu Yiting  (25.28) Cheng Yujie  (23.78)	China	17 December 2021	World Championships	Abu Dhabi, United Arab Emirates	[92]
4 × 100m medley relay	3:49.16

Legend: # – Record awaiting ratification by FINA;WR – World record;AM – Americas record;AS – Asian record;CR – Commonwealth record;
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

Mixed

Event	Time		Name	Nationality	Date	Meet	Location	Ref
4×50m freestyle relay	1:31.50	not ratified	Daniel Diehl  (22.07) Quintin McCarty  (21.35) Kristina Paegle  (23.78) Carly Novelline  (24.30)	United States	2 October 2021	World Cup	Berlin, Germany	[93]
4×50m freestyle relay	1:31.23	not ratified	Jacob Mills  (22.22) Nicholas Finch  (21.61) Skye Carter  (23.98) Eva Okaro  (23.42)	Great Britain	14 December 2023	Ontario Junior International	Toronto, Canada	[ citation needed ]
4×50m medley relay	1:41.21		Quintin McCarty  (24.07) Zhier Fan  (26.75) Charlotte Hook  (26.27) Kristina Paegle  (24.12)	United States	9 October 2021	World Cup	Budapest, Hungary	[94]

Legend: # – Record awaiting ratification by FINA;WR – World record;
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

References

General

• World Junior Records – Men Long Course 4 September 2023 updated
• World Junior Records – Women Long Course 2 April 2023 updated
• World Junior Records – Mixed Relay Long Course 6 September 2023 updated
• World Junior Records – Men Short Course 15 December 2022 updated
• World Junior Records – Women Short Course 4 November 2022 updated
• World Junior Records – Mixed Relay Short Course 9 October 2021 updated

Specific

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