World record progression 4 × 100 metres medley relay

This article includes the world record progression for the 4×100 metres medley relay, and it shows the chronological history of world record times in that competitive swimming event. The 4×100 metres medley relay is a medley race in which each of four swimmers on a team swims a 100-metre leg of the relay, each swimming a different stroke, in the following sequence:

1. Backstroke (this can only be the first stroke, due to the necessity of starting this leg in the pool rather than by diving in);
2. Breaststroke;
3. Butterfly; and
4. Freestyle ("freestyle" means any stroke other than backstroke, breaststroke or butterfly – most swimmers use the front crawl).

Swimming world records are recognized by and maintained by FINA ("Fédération Internationale de Natation"), the international competitive swimming and aquatics federation that overseas the sport in international competition. World records in the medley relay event were first recognized by FINA in 1953. The long course (50-metre pool) world records are historically older than the short-course (25-metre pool) records. FINA amended its regulations governing the recognition of world records in 1956; specifically, FINA mandated that only record times that were contested in 50-metre (or 55-yard) pools were eligible for recognition after that time.^[1] The short-course world records have been separately recognized since 1991. On July 25, 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 meters: 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.^[2] In October 2013 FINA decided to establish "standards" before something can be recognized as the first world record in these events.^[3] But later on March 13, 2014 FINA has officially ratified the eight world records set by Indiana University swimmers at the IU Relay Rally held on September 26, 2013 in Bloomington.^[4]

It is possible to set an individual world record in the 100 metres backstroke by swimming the backstroke first leg of the 4×100-metre medley relay, except in the mixed relay.^[5] Swimming the other three legs of the medley relay cannot qualify as world records as FINA criteria require a "static start" for world record recognition – swimming relay exchanges are characterized as "dynamic".

The first Olympics at which the 4×100 metres medley relay event was contested was the 1960 Summer Olympics in Rome.

Men

Long course

#	Time		Name	Nationality	Date	Meet	Location	Ref
1	4:39.2		Gustaf Hellsing Lennart Brock Roy Dahl Hakan Westesson	Sweden	22 Feb 1953	-	Helsingborg, Sweden
2	4:32.2		Gilbert Bozon Pierre Dumesnil Maurice Lusien Alex Jany	France	22 Mar 1953	-	Charleroi, Belgium
3	4:31.5		A. Violas Pierre Dumesnil Julian Arene Aldo Eminente	France	1 Apr 1953	-	Troyes, France
4	4:30.8		Gustaf Hellsing Lennart Brock Göran Larsson Per-Olof Östrand	Sweden	17 Apr 1953	-	Lund, Sweden
5	4:27.8		Gustaf Hellsing Lennart Brock Göran Larsson Per-Olof Östrand	Sweden	24 Apr 1953	-	Borås, Sweden
6	4:24.8		Viktor Lopatin Vladimir Minashkin Pyotr Skripchenkov Lev Balandin	Soviet Union	13 May 1953	-	Moscow, Soviet Union
7	4:21.3		Viktor Solovyov Vladimir Minashkin Pyotr Skripchenkov Lev Balandin	Soviet Union	26 Jan 1954	-	Moscow, Soviet Union
8	4:19.0		Viktor Solovyov Vladimir Minashkin Pyotr Skripchenkov Lev Balandin	Soviet Union	24 Feb 1954	-	Stockholm, Sweden	[6]
9	4:14.8		G. Kuvaldin Vladimir Minashkin Vladimir Strushanov Lev Balandin	Soviet Union	14 Aug 1956	Olympic Trials	Moscow, Soviet Union	[7]
10	4:17.8		(1:01.2) Katsuki Ishikara  (-) Masaru Furukawa  (-) Kazuo Tomita  (-) Takashi Ishimoto	Japan	7 Sep 1957	All-Japan Student Championships	Tokyo, Japan	[8]
11	4:17.2		Keiji Hase Takashi Ishimoto Masaru Furukawa Manabu Koga	Japan	28 May 1958	Asian Games	Tokyo, Japan
12	4:16.7			Japan	29 Jun 1958	-	Los Angeles, United States
13	4:14.2	(yd)	John Monckton Terry Gathercole Brian Wilkinson John Devitt	Australia	25 Jul 1958	British Empire and Commonwealth Games	Cardiff, United Kingdom	[9]
14	4:10.4		John Monckton Terry Gathercole Brian Wilkinson John Devitt	Australia	22 Aug 1958	-	Osaka, Japan	[10]
15	4:09.2		Frank McKinney Chet Jastremski Mike Troy Peter Sintz	United States	24 Jul 1960	-	Toledo, Ohio, United States
16	4:08.2	(h)	Bob Bennett Paul Hait Dave Gillanders Steve Clark	United States	27 Aug 1960	Olympic Games	Rome, Italy
17	4:05.4		Frank McKinney Paul Hait Lance Larson Jeff Farrell	United States	1 Sep 1960	Olympic Games	Rome, Italy	[11]
18	4:03.0		Tom Stock Chet Jastremski Lary Schulhof Peter Sintz	United States	20 Aug 1961	-	Los Angeles, United States
19	4:01.6		Tom Stock Chet Jastremski Fred Schmidt Peter Sintz	United States	12 Aug 1962	-	Cuyahoga Falls, United States
20	4:00.1		Richard McGeagh Bill Craig Walter Richardson Steve Clark	United States	24 Aug 1963	-	Osaka, Japan
21	3:58.4		(59.6 WR) Thompson Mann  (1:09.6) Bill Craig  (56.8) Fred Schmidt  (52.4) Steve Clark	United States	16 Oct 1964	Olympic Games	Tokyo, Japan	[12]
22	3:57.2		(59.1 WR) Charlie Hickcox Ken Merten Doug Russell Ken Walsh	United States	31 Aug 1967	Universiade	Tokyo, Japan
23	3:56.5		Roland Matthes Egon Henninger Horst-Gunther Gregor Frank Wiegand	East Germany	7 Nov 1967	-	Leipzig, East Germany
24	3:54.9		Charlie Hickcox Don McKenzie Doug Russell Ken Walsh	United States	26 Oct 1968	Olympic Games	Mexico City, Mexico	[13]
25	3:54.4		Roland Matthes Klaus Katzur Udo Poser Lutz Unger	East Germany	8 Sep 1970	European Championships	Barcelona, Spain
26	3:50.4		Charles Campbell Peter Dahlberg Mark Spitz Jerry Heidenreich	United States	3 Sep 1971	GDRvUSA Duel	Leipzig, East Germany
27	3:48.16		(57.97) Mike Stamm  (1:04.22) Tom Bruce  (54.28) Mark Spitz  (51.69) Jerry Heidenreich	United States	4 Sep 1972	Olympic Games	Munich, West Germany
28	3:47.28		Peter Rocca Chris Woo Joe Bottom Jack Babashoff	United States	22 Jul 1976	Olympic Games	Montreal, Canada
29	3:42.22		(55.89) John Naber  (1:02.50) John Hencken  (54.26) Matt Vogel  (49.57) Jim Montgomery	United States	22 Jul 1976	Olympic Games	Montreal, Canada
30	3:40.84		Rick Carey Steve Lundquist Matt Gribble Rowdy Gaines	United States	7 Aug 1982	World Championships	Guayaquil, Ecuador
31	3:40.42		Rick Carey Steve Lundquist Matt Gribble Rowdy Gaines	United States	22 Aug 1983	Pan American Games	Caracas, Venezuela
32	3:39.30		(55.41) Rick Carey  (1:01.86) Steve Lundquist  (52.87) Pablo Morales  (49.16) Rowdy Gaines	United States	4 Aug 1984	Olympic Games	Los Angeles, United States
33	3:38.28		Rick Carey John Moffet Pablo Morales  (47.84) Matt Biondi	United States	18 Aug 1985	Pan Pacific Championships	Tokyo, Japan	[14]
34	3:36.93		(54.56) David Berkoff  (1:01.64) Rick Schroeder  (52.38) Matt Biondi  (48.35) Chris Jacobs	United States	25 Sep 1988	Olympic Games	Seoul, South Korea	[15]
34=	3:36.93		(53.86 WR) Jeff Rouse  (1:01.45) Nelson Diebel  (52.83) Pablo Morales  (48.79) Jon Olsen	United States	31 Jul 1992	Olympic Games	Barcelona, Spain	[16]
35	3:34.84		(53.95) Jeff Rouse  (1:00.32) Jeremy Linn  (52.39) Mark Henderson  (48.18) Gary Hall, Jr.	United States	26 Jul 1996	Olympic Games	Atlanta, United States
36	3:33.73		(53.87) Lenny Krayzelburg  (59.84) Ed Moses  (52.10) Ian Crocker  (47.92) Gary Hall, Jr.	United States	23 Sep 2000	Olympic Games	Sydney, Australia	[17]
37	3:33.48		(54.17) Aaron Peirsol  (1:00.14) Brendan Hansen  (51.13) Michael Phelps  (48.04) Jason Lezak	United States	29 Aug 2002	Pan Pacific Championships	Yokohama, Japan
38	3:31.54		(53.71) Aaron Peirsol  (59.61) Brendan Hansen  (50.39) Ian Crocker  (47.83) Jason Lezak	United States	27 Jul 2003	World Championships	Barcelona, Spain	[18]
39	3:30.68		(53.45 WR) Aaron Peirsol  (59.37) Brendan Hansen  (50.28) Ian Crocker  (47.58) Jason Lezak	United States	21 Aug 2004	Olympic Games	Athens, Greece	[19]
40	3:29.34		(53.16) Aaron Peirsol  (59.27) Brendan Hansen  (50.15) Michael Phelps  (46.76) Jason Lezak	United States	17 Aug 2008	Olympic Games	Beijing, China	[20]
41	3:27.28		(52.19) Aaron Peirsol  (58.57) Eric Shanteau  (49.72) Michael Phelps  (46.80) David Walters	United States	2 Aug 2009	World Championships	Rome, Italy

Legend: # – Record awaiting ratification by FINA; yd – set in a pool measured in yards;
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

Short course

#	Time		Name	Nationality	Date	Meet	Location	Ref
1	3:34.86		(52.50 WBT) Mark Tewksbury  (-) John Cleveland  (-) Tom Ponting  (-) Steven Vandermeulen	Canada	22 Feb 1992	CAN SC Nationals	Winnipeg, Canada
2	3:32.57		(53.24) Tripp Schwenk  (59.43) Seth Van Neerden  (52.20) Mark Henderson  (47.70) Jon Olsen	United States	2 Dec 1993	World SC Championships	Palma de Mallorca, Spain
3	3:30.91		(52.28) Adrian Radley  (59.68) Ryan Mitchell  (51.10) Geoff Huegill  (47.85) Michael Klim	Australia	23 Dec 1996	AUS SC Nationals	Melbourne, Australia
4	3:30.66		(52.72) Adrian Radley  (59.39) Phil Rogers  (51.35) Geoff Huegill  (47.20) Michael Klim	Australia	17 Apr 1997	World SC Championships	Gothenburg, Sweden
5	3:29.88		(53.34) Matt Welsh  (59.47) Phil Rogers  (50.69) Michael Klim  (46.38) Chris Fydler	Australia	4 Apr 1999	World SC Championships	Hong Kong, Hong Kong
6	3:29.00		(52.17) Aaron Peirsol  (58.56) David Denniston  (51.93) Peter Marshall  (46.34) Jason Lezak	United States	7 Apr 2002	World SC Championships	Moscow, Russia	[21]
7	3:28.12	(tt)	(50.95) Matt Welsh  (59.44) Jim Piper  (50.61) Geoff Huegill  (47.12) Ashley Callus	Australia	4 Sep 2002	AUS SC Nationals	Melbourne, Australia	[22]
8	3:25.38		(51.28) Aaron Peirsol  (57.82) Brendan Hansen  (48.62) Ian Crocker  (47.66) Garrett Weber-Gale	United States	25 Mar 2004	NCAA Championships	East Meadow, United States
9	3:25.09		(51.35) Aaron Peirsol  (57.42) Brendan Hansen  (49.76) Ian Crocker  (46.56) Jason Lezak	United States	11 Oct 2004	World SC Championships	Indianapolis, United States	[23]
10	3:24.29		(50.57) Stanislav Donets  (57.93) Sergey Geybel  (49.39) Yevgeny Korotyshkin  (46.40) Alexander Sukhorukov	Russia	13 Apr 2008	World SC Championships	Manchester, United Kingdom	[24]
11	3:23.33		(50.60) Jake Tapp  (57.18) Paul Kornfeld  (50.18) Joe Bartoch  (45.37) Brent Hayden	Canada	9 Aug 2009	British Gas SC Grand Prix	Leeds, United Kingdom
12	3:20.71		(48.94) Nick Thoman  (57.03) Mark Gangloff  (49.93) Michael Phelps  (44.81) Nathan Adrian	United States	18 Dec 2009	Duel in the Pool	Manchester, United Kingdom
13	3:19.16		(49.63) Stanislav Donets  (56.43) Sergey Geybel  (48.35) Yevgeny Korotyshkin  (44.75) Danila Izotov	Russia	20 Dec 2009	Vladimir Salnikov Swimming Cup	Saint Petersburg, Russia	[25]

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

Women

Long course

#	Time		Name	Nationality	Date	Meet	Location	Ref
1	5:10.8		Magda Hunyadfi Klara Killermann Éva Székely Valéria Gyenge	Hungary	24 Jul 1953	-	Budapest, Hungary
2	5:09.2		Magda Hunyadfi Klara Killermann Éva Székely Valéria Gyenge	Hungary	10 Aug 1953	-	Bucharest, Romania
3	5:07.8		Judit Temes Klara Killermann Mária Littomericzky Katalin Szőke	Hungary	3 Aug 1954	-	Budapest, Hungary
4	5:06.2		Marie-Helene Andre Francoise Derommeleere Odette Lusien Josette Arene	France	16 Aug 1954	-	Marseille, France
5	5:02.1		(1:13.0) Joke de Korte  (1:23.4) Rika Bruins  (1:20.3) Mary Kok  (1:05.4) Geertje Wielema	Netherlands	27 Nov 1954	-	Rotterdam, Netherlands	[26]
6	5:00.1		Jopie van Alphen Rika Bruins Atie Voorbij Hetty Balkenende	Netherlands	17 Jul 1955	-	Paris, France	[27]
7	4:57.8		Eva Pajor Éva Székely Rypsyma Székely Katalin Szőke	Hungary	3 Sep 1955	-	Budapest, Hungary	[27]
8	4:54.3		Lenie de Nijs Rita Kroon Atie Voorbij Greetje Kraan	Netherlands	19 Nov 1956	-	Hilversum, Netherlands	[27]
9	4:53.1		Joke de Korte Ada den Haan Tineke Lagerberg Cocky Gastelaars	Netherlands	8 Dec 1956	-	Zwolle, Netherlands
10	4:57.0	(yd)	Greetje Kraan Ada den Haan Atie Voorbij Cocky Gastelaars	Netherlands	18 May 1957	GBRvNED International	Blackpool, United Kingdom	[28]
11	4:54.0	(yd)	(1:10.9) Judy Grinham  (1:23.3) Anita Lonsbrough  (1:14.2) Christine Gosden  (1:04.6) Diana Wilkinson	Great Britain	25 Jul 1958	British Empire and Commonwealth Games	Cardiff, United Kingdom	[29]
12	4:52.9		Lenie de Nijs Ada den Haan Atie Voorbij Cocky Gastelaars	Netherlands	5 Sep 1958	European Championships	Budapest, Hungary	[30]
13	4:51.5		(1:11.7) Ria van Velsen Ada den Haan Tineke Lagerberg Cocky Gastelaars	Netherlands	26 Jul 1959	NEDvGBR International Meet	Waalwijk, Netherlands	[31]
14	4:44.6		Carin Cone Ann Bancroft Becky Collins Chris von Saltza	United States	6 Sep 1959	1959 Pan American Games	Chicago, United States	[32]
15	4:41.1		Lynn Burke Patty Kempner Carolyn Schuler Chris von Saltza	United States	2 Sep 1960	Olympic Games	Rome, Italy
16	4:40.1		Ingrid Schmidt Heidi Pechstein Ute Noack Barbara Gobel	East Germany	23 Aug 1962	European Championships	Leipzig, East Germany	[33]
17	4:39.1		(1:12.2) Maria van Velsen  (1:18.0) Klenie Bimolt  (1:05.4) Ada Kok  (1:03.5) Erica Terpstra	Netherlands	28 Jun 1964	NEDvGBR International Meet	Groningen (city), Netherlands	[34]
18	4:38.1		Donna de Varona Claudia Kolb Judy Haroun Lillian Watson	United States	4 Jul 1964	-	Los Altos, California, United States
19	4:34.6		Cathy Ferguson Cynthia Goyette Martha Randall Kathy Ellis	United States	28 Sep 1964	Pre Olympic	Los Angeles, United States
20	4:33.9		Cathy Ferguson Cynthia Goyette Sharon Stouder Kathy Ellis	United States	18 Oct 1964	Olympic Games	Tokyo, Japan
21	4:30.0		Kendis Moore Catie Ball Ellie Daniel Wendy Fordyce	United States	30 Jul 1967	Pan American Games	Winnipeg, Canada
22	4:28.1		Kaye Hall Catie Ball Ellie Daniel Susan Pedersen	United States	14 Sep 1968	Pre Olympic	Colorado Springs, United States
23	4:27.4		Susie Atwood Kim Brecht Alice Jones Cindy Schilling	United States	1 Sep 1970	-	Tokyo, Japan
24	4:27.3		Susie Atwood Claudia Clevenger Ellie Daniel Linda Johnson	United States	11 Sep 1971	URSvUSAvGBR meet	Minsk, Soviet Union
25	4:25.34		Susie Atwood Lynn Vidali Ellie Daniel Jane Barkman	United States	18 Aug 1972	Pre Olympic	Knoxville, United States
26	4:20.75		Melissa Belote Cathy Carr Deena Deardurff Sandy Neilson	United States	3 Sep 1972	Olympic Games	Munich, West Germany
27	4:16.84		Ulrike Richter Renate Vogel Rosemarie Kother Kornelia Ender	East Germany	4 Sep 1973	World Championships	Belgrade, Yugoslavia	[35]
28	4:13.78		Ulrike Richter Renate Vogel Rosemarie Kother Kornelia Ender	East Germany	24 Aug 1974	European Championships	Vienna, Austria
29	4:13.41		Monika Seltmann Carola Nitschke Andrea Pollack Barbara Krause	East Germany	5 Jun 1976	East German National Championships	Berlin, East Germany	[36]
30	4:07.95		(1:02.23) Ulrike Richter  (1:10.15) Hannelore Anke  (59.53) Andrea Pollack  (56.04) Kornelia Ender	East Germany	18 Jul 1976	Olympic Games	Montreal, Canada
31	4:06.67		(1:01.51 =WR) Rica Reinisch  (1:09.46) Ute Geweniger  (1:00.14) Andrea Pollack  (55.56) Caren Metschuck	East Germany	20 Jul 1980	Olympic Games	Moscow, Soviet Union
32	4:05.88		Kristin Otto Ute Geweniger Ines Geißler Birgit Meineke	East Germany	6 Aug 1982	World Championships	Guayaquil, Ecuador
33	4:05.79		Ina Kleber Ute Geweniger Ines Geißler Birgit Meineke	East Germany	26 Aug 1983	European Championships	Rome, Italy
34	4:03.69		(1:00.59 WR) Ina Kleber  (1:08.69) Sylvia Gerasch  (59.52) Ines Geißler  (54.89) Birgit Meineke	East Germany	24 Aug 1984	Friendship Games	Moscow, Soviet Union	[37]
35	4:02.54		(1:00.82) Lea Loveless  (1:08.67) Anita Nall  (58.58) Crissy Ahmann-Leighton  (54.47) Jenny Thompson	United States	30 Jul 1992	Olympic Games	Barcelona, Spain
36	4:01.67		(1:00.16 WR) He Cihong  (1:09.04) Dai Guohong  (58.66) Liu Limin  (53.81) Le Jingyi	China	10 Sep 1994	World Championships	Rome, Italy	[38]
37	3:58.30		(1:01.39) Barbara Bedford  (1:06.29) Megan Quann  (57.25) Jenny Thompson  (53.37) Dara Torres	United States	23 Sep 2000	Olympic Games	Sydney, Australia	[39]
38	3:57.32		(1:01.18) Giaan Rooney  (1:06.50) Leisel Jones  (56.67) Petria Thomas  (52.97) Jodie Henry	Australia	21 Aug 2004	Olympic Games	Athens, Greece	[40]
39	3:56.30		(1:01.06) Sophie Edington  (1:05.51) Leisel Jones  (56.86) Jessicah Schipper  (52.87) Libby Lenton	Australia	21 Mar 2006	Commonwealth Games	Melbourne, Australia	[41]
40	3:55.74		(1:00.79) Emily Seebohm  (1:04.94) Leisel Jones  (57.18) Jessicah Schipper  (52.83) Libby Lenton	Australia	31 Mar 2007	World Championships	Melbourne, Australia	[42]
41	3:52.69		(59.33) Emily Seebohm  (1:04.58) Leisel Jones  (56.25) Jessicah Schipper  (52.53) Libby Trickett	Australia	17 Aug 2008	Olympic Games	Beijing, China	[43]
42	3:52.19		(58.98) Zhao Jing  (1:04.12) Chen Huijia  (56.28) Jiao Liuyang  (52.81) Li Zhesi	China	1 Aug 2009	World Championships	Rome, Italy	[44]
43	3:52.05		(58.5) Missy Franklin  (1:04.82) Rebecca Soni  (55.48) Dana Vollmer  (53.25) Allison Schmitt	United States	4 Aug 2012	Olympic Games	London, United Kingdom	[45]

Legend: # – Record awaiting ratification by FINA; yd – set in a pool measured in yards;
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

Short course

#	Time		Name	Nationality	Date	Meet	Location	Ref
1	3:57.73		(1:00.31) He Cihong  (1:06.17) Dai Guohong  (59.06) Liu Limin  (52.19) Le Jingyi	China	5 Dec 1993	World SC Championships	Palma de Mallorca, Spain
2	3:57.62		(59.27) Mai Nakamura  (-) Masami Tanaka  (-) Ayari Aoyama  (-) Sumika Minamoto	Japan	4 Apr 1999	World SC Championships	Hong Kong, Hong Kong
3	3:57.46		(58.75) Courtney Shealy  (1:06.09) Kristy Kowal  (59.28) Keegan Walkley  (53.34) Maritza Correia	United States	17 Mar 2000	Women's NCAA Championships	Indianapolis, United States
4	3:55.78		(1:00.74) Therese Alshammar  (1:04.90) Emma Igelström  (57.12) Anna-Karin Kammerling  (53.02) Johanna Sjöberg	Sweden	5 Apr 2002	World SC Championships	Moscow, Russia	[46]
5	3:54.95		(59.37) Sophie Edington  (1:05.25) Brooke Hanson  (58.28) Jessicah Schipper  (52.05) Lisbeth Lenton	Australia	9 Oct 2004	World SC Championships	Indianapolis, United States	[47]
6	3:51.84		(58.54) Tayliah Zimmer  (1:04.95) Jade Edmistone  (56.36) Jessicah Schipper  (51.99) Lisbeth Lenton	Australia	7 Apr 2006	World SC Championships	Shanghai, China	[48]
7	3:51.36		(58.79) Margaret Hoelzer  (1:03.98) Jessica Hardy  (55.93) Rachel Komisarz  (52.66) Kara Denby	United States	11 Apr 2008	World SC Championships	Manchester, United Kingdom	[49]
8	3:49.45		(56.88) Katy Murdoch  (1:03.39) Annamay Pierse  (57.29) Audrey Lacroix  (51.89) Victoria Poon	Canada	9 Aug 2009	British Gas swimming Grand Prix	Leeds, United Kingdom
9	3:47.97		(57.47) Margaret Hoelzer  (1:03.58) Jessica Hardy  (54.37) Dana Vollmer  (52.55) Amanda Weir	United States	18 Dec 2009	Duel in the Pool	Manchester, United Kingdom
10	3:45.56		(55.97) Natalie Coughlin  (1:02.91) Rebecca Soni  (55.36) Dana Vollmer  (51.32) Missy Franklin	United States	16 Dec 2011	Duel in the Pool	Atlanta, United States	[50]
11	3:45.20		(56.08) Courtney Bartholomew  (1:02.88) Katie Meili  (55.01) Kelsi Worrell  (51.23) Simone Manuel	United States	11 December 2015	Duel in the Pool	Indianapolis, United States	[51]

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

FINA recognizes only long-course world records for mixed relays in this event.

#	Time		Name	Nationality	Date	Meet	Location	Ref
1	4:13.47		(1:06.61) Allie Day  (1:09.81) Mike Hurley  (58.63) Tanner Kurz  (58.42) Haley Lips	Indiana University Hoosiers	26 September 2013	IU Fall Frenzy	Bloomington, United States	[52][53]
2	3:48.74		Andrei Shabasov Veronika Popova Andrei Nikolayev Daria Ustinova	St. Petersburg	16 May 2014	Russian Championships	Moscow, Russia	[54]
3	3:44.02		(53.68) Christopher Walker-Hebborn  (59.30) Adam Peaty  (57.51) Jemma Lowe  (53.53) Francesca Halsall	Great Britain	19 August 2014	European Championships	Berlin, Germany	[55]
4	3:41.71		(52.94) Christopher Walker-Hebborn  (57.98) Adam Peaty  (57.02) Siobhan-Marie O'Connor  (53.77) Francesca Halsall	Great Britain	5 August 2015	World Championships	Kazan, Russia	[56]

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

References

1. Craig Lord, "A Time of Change for World Records," SwimVortex.com (28 May 2013). Retrieved 20 March 2015.
2. "FINA Swimming Rules 2013 - 2017 incl. World Record Application Form" (PDF). FINA. 16 August 2013. Retrieved 5 December 2015.
3. Craig Lord (3 October 2013). "FINA To Set World Best Standards For Mixed Relays". swimvortex.com. Retrieved 5 December 2015.
4. "FINA Goes Back in Time to Ratify Indiana Hoosier Swims as World Records". Swimming World Magazine. 13 March 2014. Retrieved 5 December 2015.
5. "Ryan Murphy's Blistering Backstroke Leads USA to Mixed 400 Medley Relay World Record at 2015 FINA World Championships". Swimming World Magazine. Retrieved December 5, 2015.
6. "Sports in Brief: Russian Swimming Records". The Times. 1954-02-25.
7. "Sports in Brief". The Times. 1954-08-15. p. 3.
8. "Sports in Brief". The Times. 1957-09-09. p. 13.
9. "Empire Games Results: Swimming". The Times. 1958-07-26. p. 3.
10. "Swimming record for Australians". The Times. 1958-08-23. p. 3.
11. "Swimming night of triumph for U.S.: Two world marks and three gold medals". The Times. 1960-09-02. p. 4.
12. "Miss Stouder untroubled by Dutch enthusiasm". The Times. 1964-10-17. p. 4.
13. "Great feat by America". The Times. 1968-10-28. p. 11.
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