400 metres individual medley

The 400 metres individual medley is an event in competitive swimming. World records are ratified by World Aquatics (formerly FINA). The current long course world record holders are France's Léon Marchand and Canada's Summer McIntosh, while the current short course world record holders are Japan's Daiya Seto, and McIntosh.

The men's and women's events have been contested at the Olympic Games since 1964; the current Olympic champions are Marchand and McIntosh. The men's and women's events have been contested at the World Aquatics Championships since the inaugural championships in 1973; the current world champions (long course) are Marchand and McIntosh. The men's and women's events have been contested at the World Aquatics Swimming Championships (25m) since the inaugural championships in 1993; the current world champions (short course) are Ilya Borodin, and McIntosh.

World record progression

Men long course

# Time NameNationalityDateMeetLocation Ref
1 5:15.6 Gary Heinrich United States 27 August 1957- Philadelphia, United States
2 5:12.9 Vladimir Strushanov Soviet Union 20 October 1957- Moscow, Soviet Union
3 5:08.8 Ian Black Great Britain 6 June 1959- Cardiff, Great Britain
4 5:07.8 George Harrison United States 24 June 1960- Los Angeles, United States
5 5:05.3 George Harrison United States 24 June 1960- Los Angeles, United States
6 5:04.5 Dennis Rounsaville United States 22 July 1960- Toledo, United States
7 5:04.3 Ted Stickles United States 1 July 1961- Chicago, United States
8 4:55.6 Ted Stickles United States 18 August 1961- Los Angeles, United States
9 4:53.8 Gerhard Hetz West Germany 24 May 1962- Moscow, Soviet Union
10 4:51.4 Ted Stickles United States 30 June 1962- Chicago, United States
11 4:51.0 Ted Stickles United States 12 July 1962- Louisville, United States
12 4:50.2 Gerhard Hetz West Germany 12 October 1963- Tokyo, Japan
13 4:48.6 Dick Roth United States 31 July 1964- Los Altos, United States
14 4:45.4 Dick Roth United States 14 October 1964Olympic Games Tokyo, Japan
15 4:45.3 Andrey Dunayev Soviet Union 3 April 1968- Tallinn, Soviet Union
16 4:45.1 Greg Buckingham United States 6 July 1968Santa Clara Invitational Santa Clara, United States
17 4:43.4 Gary Hall Sr. United States 20 July 1968- Los Angeles, United States
18 4:43.3 hCharlie Hickcox United States 30 August 1968US Olympic Trials Long Beach, United States
19 4:39.0 Charlie Hickcox United States 30 August 1968US Olympic Trials Long Beach, United States
20 4:38.7 Gary Hall Sr. United States 11 July 1969Santa Clara Invitational Santa Clara, United States
21 4:33.9 Gary Hall Sr. United States 15 August 1969AAU Nationals Louisville, United States
22 4:31.0 Gary Hall Sr. United States 21 August 1970AAU Nationals Los Angeles, United States
23 4:30.81 Gary Hall Sr. United States 3 August 1972US Olympic Trials Chicago, United States
24 4:28.89 András Hargitay Hungary 20 August 1974European Championships Vienna, Austria
25 4:26.00 Zoltán Verrasztó Hungary 2 April 1976AAU Indoor Championships Long Beach, United States
26 4:23.68 Rod Strachan United States 25 July 1976Olympic Games Montreal, Canada
27 4:23.39 Jesse Vassallo United States 4 August 1978AAU Championships The Woodlands, United States
28 4:20.05 Jesse Vassallo United States 28 August 1978World Championships West Berlin, West Germany
29 4:19.78 Ricardo Prado Brazil 8 August 1982World Championships Guayaquil, Ecuador
30 4:19.61 Jens-Peter Berndt East Germany 23 May 1984East German Championships Magdeburg, East Germany
31 4:17.53 Alex Baumann Canada 17 June 1984Canadian Olympic Trials Etobicoke, Canada
32 4:17.41 Alex Baumann Canada 30 July 1984Olympic Games Los Angeles, United States
33 4:16.12 David Wharton United States 14 August 1987Pan Pacific Championships Brisbane, Australia
34 4:15.42 Tamás Darnyi Hungary 19 August 1987European Championships Strasbourg, France
35 4:14.75 Tamás Darnyi Hungary 21 September 1988Olympic Games Seoul, South Korea
36 4:12.36 Tamás Darnyi Hungary 8 January 1991World Championships Perth, Australia
37 4:12.30 Tom Dolan United States 11 September 1994World Championships Rome, Italy
38 4:11.76 Tom Dolan United States 17 September 2000Olympic Games Sydney, Australia [1]
39 4:11.09 Michael Phelps United States 15 August 2002US National Championships Fort Lauderdale, United States [2]
40 4:10.73 Michael Phelps United States 7 April 2003Duel in the Pool Indianapolis, United States [3]
41 4:09.09 Michael Phelps United States 27 July 2003World Championships Barcelona, Spain [4]
42 4:08.41 Michael Phelps United States 7 July 2004US Olympic Trials Long Beach, United States [5]
43 4:08.26 Michael Phelps United States 14 August 2004Olympic Games Athens, Greece [6]
44 4:06.22 Michael Phelps United States 1 April 2007World Championships Melbourne, Australia [7]
45 4:05.25 Michael Phelps United States 29 June 2008US Olympic Trials Omaha, United States [8]
46 4:03.84 Michael Phelps United States 10 August 2008Olympic Games Beijing, China [9]
47 4:02.50 Léon Marchand France 23 July 2023World Championships Fukuoka, Japan [10][11]

Men short course

# Time NameNationalityDateMeetLocation Ref
1 4:08.77 Luca Sacchi Italy 29 February 1992World Cup Palma de Mallorca, Spain
2 4:07.10 Jani Sievinen Finland 9 February 1993World Cup Malmö, Sweden
3 4:06.03 Jani Sievinen Finland 20 January 1996- Lappeenranta, Finland
4 4:05.59 Marcel Wouda Netherlands 1 February 1997World Cup Gelsenkirchen, Germany
5 4:05.41 Marcel Wouda Netherlands 8 February 1997World Cup Paris, France
6 4:04.24 Matthew Dunn Australia 24 September 1998Australian Championships Perth, Australia
7 4:02.72 Brian Johns Canada 23 February 2003Canadian University Championships Victoria, Canada
8 4:00.37 László Cseh Hungary 9 December 2005European Championships Trieste, Italy
9 3:59.33 László Cseh Hungary 14 December 2007European Championships Debrecen, Hungary
10 3:57.27 László Cseh Hungary 11 December 2009European Championships Istanbul, Turkey [12]
11 3:55.50 Ryan Lochte United States 16 December 2010World Championships Dubai, United Arab Emirates [13]
12 3:54.81 Daiya Seto Japan 20 December 2019International Swimming League Las Vegas, United States [14]

Women long course

# Time NameNationalityDateMeetLocation Ref
1 5:46.6 Sylvia Ruuska United States 27 June 1958- Los Angeles, United States
2 5:43.7 Sylvia Ruuska United States 1 August 1958- Topeka, United States
3 5:41.1 Sylvia Ruuska United States 24 February 1959- Melbourne, Australia
4 5:40.2 Sylvia Ruuska United States 17 July 1959- Redding, United States
5 5:36.5 Donna de Varona United States 15 July 1960- Indianapolis, United States
6 5:34.5 Donna de Varona United States 11 August 1961- Philadelphia, United States
7 5:29.7 Donna de Varona United States 2 June 1962- Los Altos, United States
8 5:27.4 Sharon Finneran United States 26 July 1962- Osaka, Japan
9 5:24.7 Donna de Varona United States 26 July 1962- Osaka, Japan
10 5:21.9 Sharon Finneran United States 28 July 1962- Osaka, Japan
11 5:16.5 Donna de Varona United States 10 March 1964- Lima, Peru
12 5:14.9 Donna de Varona United States 30 August 1964- New York City, United States
13 5:11.7 Claudia Kolb United States 9 July 1967Santa Clara International Santa Clara, United States
14 5:09.7 Claudia Kolb United States 1 August 1967Pan American Games Winnipeg, Canada
15 5:08.2 Claudia Kolb United States 19 August 1967AAU Nationals Philadelphia, United States
16 5:04.7 Claudia Kolb United States 24 August 1968US Olympic Trials Los Angeles, United States
17 5:02.97 Gail Neall Australia 31 August 1972Olympic Games Munich, West Germany
18 5:01.10 Angela Franke East Germany 18 August 1973- Utrecht, Netherlands
19 4:57.51 Gudrun Wegner East Germany 6 September 1973World Championships Belgrade, Yugoslavia
20 4:52.42 Ulrike Tauber East Germany 21 August 1974European Championships Vienna, Austria
21 4:52.20 Ulrike Tauber East Germany 7 June 1975East German Championships Wittenberg, East Germany
22 4:48.79 Birgit Treiber East Germany 1 June 1976East German Championships East Berlin, East Germany
23 4:42.77 Ulrike Tauber East Germany 24 July 1976Olympic Games Montreal, Canada
24 4:40.83 Tracy Caulkins United States 23 August 1978World Championships West Berlin, West Germany
25 4:39.96 Petra Schneider East Germany 30 March 1980- Leningrad, Soviet Union
26 4:38.44 Petra Schneider East Germany 27 May 1980- Magdeburg, East Germany
27 4:36.29 Petra Schneider East Germany 26 July 1980Olympic Games Moscow, Soviet Union
28 4:36.10 Petra Schneider East Germany 26 July 1982World Championships Guayaquil, Ecuador
29 4:34.79 Chen Yan China 13 October 1997Chinese National Games Shanghai, China
30 4:33.59 Yana Klochkova Ukraine 16 September 2000Olympic Games Sydney, Australia [15]
31 4:32.89 Katie Hoff United States 1 April 2007World Championships Melbourne, Australia [16]
32 4:31.46 Stephanie Rice Australia 22 March 2008Australian Championships Sydney, Australia [17]
33 4:31.12 Katie Hoff United States 29 June 2008US Olympic Trials Omaha, United States [18]
34 4:29.45 Stephanie Rice Australia 10 August 2008Olympic Games Beijing, China [19]
35 4:28.43 Ye Shiwen China 28 July 2012Olympic Games London, United Kingdom [20]
36 4:26.36 Katinka Hosszú Hungary 6 August 2016Olympic Games Rio de Janeiro, Brazil [21]
37 4:25.87 Summer McIntosh Canada 1 April 2023Canadian Trials Toronto, Canada [22]
38 4:24.38 Summer McIntosh Canada 16 May 2024Canadian Trials Toronto, Canada [23][24]
39 4:23.65 Summer McIntosh Canada 11 June 2025Canadian Trials Victoria, Canada [25]

Women short course

# Time NameNationalityDateMeetLocation Ref
1 4:29.00 Dai Guohong China China 2 December 1993World Championships Palma de Mallorca, Spain
2 4:27.83 Yana Klochkova Ukraine Ukraine 20 January 2002World Cup Paris, France
3 4:26.52 Kirsty Coventry Zimbabwe Zimbabwe 9 April 2008World Championships Manchester, United Kingdom [26]
4 4:25.87 Julia Smit United States USA 28 November 2008Canada Cup Toronto, Canada
5 4:25.06 Mireia Belmonte Spain Spain 14 December 2008European Championships Rijeka, Croatia [27]
6 4:22.88 Kathryn Meaklim South Africa South Africa 22 November 2009World Cup Singapore [28]
7 4:21.04 Julia Smit United States USA 18 December 2009Duel in the Pool Manchester, United Kingdom [29]
8 4:20.85 Katinka Hosszú Hungary 11 August 2013World Cup Berlin, Germany [30]
9 4:20.83 Katinka Hosszú Hungary 28 August 2014World Cup Doha, Qatar [31]
10 4:19.86 Mireia Belmonte Spain Spain 3 December 2014World Championships Doha, Qatar [32]
11 4:19.46 hKatinka Hosszú Hungary Hungary 2 December 2015European Championships Netanya, Israel [33]
12 4:18.94 Mireia Belmonte Spain Spain 12 August 2017World Cup Eindhoven, Netherlands [34]
13 4:15.48 Summer McIntosh Canada Canada 14 December 2024World Championships Budapest, Hungary [35][36]
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; so – swim-off; tt – time trial

All-time top 25

Tables show data for two definitions of "Top 25" - the top 25 400 m individual medley times and the top 25 athletes:
- denotes top performance for athletes in the top 25 400 m individual medley times
- denotes lesser performances, still in the top 25 400 m individual medley times, by repeat athletes
- denotes top performance (only) for other top 25 athletes who fall outside the top 25 400 m individual medley times

Men long course

  • Correct as of August 2026[37]
Ath.# Perf.# Time Athlete Nation Date Place Ref.
1 1 4:02.50 Léon Marchand  France 25 July 2023 Fukuoka [10]
2 4:02.95 Marchand #2 28 July 2024 Paris [38]
2 3 4:03.84 Michael Phelps  United States 10 August 2008 Beijing [9]
4 4:04.28 Marchand #3 18 June 2022 Budapest [39]
5 4:04.56 Marchand #4 27 June 2026 Saint-Étienne [40]
6 4:04.73 Marchand #5 3 August 2025 Singapore [41]
3 7 4:05.18 Ryan Lochte  United States 28 July 2012 London [42]
8 4:05.25 Phelps #2 29 June 2008 Omaha [8]
4 9 4:05.90 Chase Kalisz  United States 30 July 2017 Budapest [43]
5 10 4:06.05 Kosuke Hagino  Japan 6 August 2016 Rio de Janeiro [44]
11 4:06.08 Lochte #2 29 June 2008 Omaha [8]
6 12 4:06.09 Daiya Seto  Japan 25 January 2020 Tokyo [45]
7 13 4:06.16 László Cseh  Hungary 10 August 2008 Beijing [9]
14 4:06.22 Phelps #3 1 April 2007 Melbourne [7]
15 4:06.40 Lochte #3 7 July 2009 Indianapolis [46]
8 16 4:06.56 Carson Foster  United States 18 June 2022 Budapest [39]
25 July 2023 Fukuoka [10]
18 4:06.75 Kalisz #2 6 August 2016 Rio de Janeiro [44]
9 18 4:06.75 Tomoyuki Matsushita  Japan 13 August 2026 Irvine [47]
20 4:06.93 Matsushita #2 22 March 2026 Tokyo [48]
10 21 4:06.96 Tyler Clary  United States 7 July 2009 Indianapolis [46]
22 4:06.99 Kalisz #3 29 June 2017 Indianapolis [49]
23 4:07.01 Lochte #4 2 August 2009 Rome [50]
24 4:07.02 Foster #3 5 December 2025 Austin [51]
25 4:07.06 Lochte #5 25 June 2012 Omaha [52]
11 4:07.46 Bobby Finke  United States 5 June 2025 Indianapolis [53]
12 4:07.47 Dávid Verrasztó  Hungary 24 June 2017 Rome [54]
13 4:07.67 Asaki Nishikawa  Japan 29 November 2025 Tokyo [55]
14 4:08.05 Ilya Borodin  Russia 25 July 2022 Kazan [56]
16 4:08.69 Yumeki Kojima  Japan 13 August 2026 Irvine [57]
15 4:08.70 Lewis Clareburt  New Zealand 30 July 2022 Birmingham [58]
17 4:08.85 Max Litchfield  Great Britain 28 July 2024 Paris [38]
18 4:08.86 Thiago Pereira  Brazil 2 August 2009 Rome [50]
28 July 2012 London [42]
19 4:09.10 Wang Shun  China 4 September 2013 Shenyang [59]
20 4:09.18 Duncan Scott  Great Britain 7 April 2022 Sheffield [60]
21 4:09.22 Jay Litherland  United States 28 July 2019 Gwangju [61]
22 4:09.24 William Petric  Australia 13 August 2026 Irvine [47]
23 4:09.27 Brendon Smith  Australia 28 July 2021 Tokyo [62]
24 4:09.29 Alberto Razzetti  Italy 30 November 2023 Riccione [63]
25 4:09.57 Ryan Erisman  United States 30 July 2026 Irvine [64]

Men short course

  • Correct as of October 2025[65]
Ath.# Perf.# Time Athlete Nation Date Place Ref.
1 1 3:54.81 Daiya Seto  Japan 20 December 2019 Las Vegas [14]
2 2 3:55.50 Ryan Lochte  United States 16 December 2010 Dubai [13]
3 3:55.53 Seto #2 26 October 2019 Tokyo [66]
4 3:55.75 Seto #3 17 December 2022 Melbourne [67]
3 5 3:56.13 Shaine Casas  United States 25 October 2025 Toronto [68]
6 3:56.26 Seto #4 20 December 2021 Abu Dhabi [69]
7 3:56.33 Seto #5 4 December 2014 Doha [70]
8 3:56.43 Seto #6 15 December 2018 Hangzhou [71]
4 9 3:56.47 Ilya Borodin  Russia 20 December 2021 Abu Dhabi [69]
5 10 3:56.48 Kosuke Hagino  Japan 13 January 2014 Tokyo [72]
11 3:56.83 Borodin #2 14 December 2024 Budapest [73]
6 12 3:57.01 Alberto Razzetti  Italy 10 December 2023 Otopeni [74]
13 3:57.25 Seto #7 30 September 2018 Eindhoven [75]
7 14 3:57.27 László Cseh  Hungary 11 December 2009 Istanbul [12]
8 15 3:57.40 Oussama Mellouli  Tunisia 16 December 2010 Dubai [13]
16 3:57.41 Casas #2 19 October 2025 Westmont [76]
9 17 3:57.45 Carson Foster  United States 14 December 2024 Budapest [73]
10 18 3:57.56 Tyler Clary  United States 16 December 2010 Dubai [13]
19 3:57.63 Foster #2 17 December 2022 Melbourne [67]
20 3:57.66 Seto #8 15 November 2017 Tokyo [77]
21 3:57.67 Borodin #3 25 November 2024 Saint Petersburg [78]
22 3:57.85 Seto #9 30 October 2021 Kazan [79]
11 23 3:57.91 Thomas Fraser-Holmes  Australia 28 November 2015 Sydney [80]
24 3:57.99 Foster #3 20 December 2021 Abu Dhabi [69]
25 3:58.08 Borodin #4 24 November 2022 Kazan [81]
12 3:58.30 Léon Marchand  France 26 October 2024 Incheon [82]
13 3:59.21 Matthew Sates  South Africa 17 December 2022 Melbourne [67]
14 3:59.23 Chad le Clos  South Africa 9 November 2013 Tokyo [83]
15 3:59.33 Brendon Smith  Australia 30 September 2021 Naples [84]
16 3:59.47 Péter Bernek  Hungary 14 December 2017 Copenhagen [85]
17 3:59.81 Duncan Scott  Great Britain 20 December 2019 Las Vegas [14]
18 3:59.90 Conor Dwyer  United States 10 August 2013 Berlin [86]
19 3:59.99 Wang Shun  China 17 November 2018 Singapore [87]
20 4:00.10 Dávid Verrasztó  Hungary 11 December 2009 Istanbul [12]
21 4:00.18 Max Litchfield  Great Britain 16 December 2018 Sheffield [88]
22 4:00.43 Kaito Tabuchi  Japan 14 December 2024 Budapest [73]
23 4:00.44 Tomoyuki Matsushita  Japan 19 October 2024 Tokyo [89]
24 4:00.55 Gal Nevo  Israel 11 December 2009 Istanbul [12]
25 4:00.57 Tristan Jankovics  Canada 14 December 2024 Budapest [73]

Women long course

  • Correct as of July 2026[90]
Ath.# Perf.# Time Athlete Nation Date Place Ref.
1 1 4:23.65 Summer McIntosh  Canada 11 June 2025 Victoria [25]
2 4:24.38 McIntosh #2 16 May 2024 Toronto [23]
3 4:25.78 McIntosh #3 3 August 2025 Singapore [91]
4 4:25.87 McIntosh #4 1 April 2023 Toronto [22]
2 5 4:26.36 Katinka Hosszú  Hungary 6 August 2016 Rio de Janeiro [21]
6 4:26.98 McIntosh #5 7 March 2025 Westmont [92]
7 4:27.11 McIntosh #6 30 July 2023 Fukuoka [93]
8 4:27.31 McIntosh #7 5 June 2026 Austin [94]
9 4:27.35 McIntosh #8 6 July 2026 Montreal [95]
10 4:27.71 McIntosh #9 29 July 2024 Paris [96]
11 4:28.01 McIntosh #10 13 August 2026 Irvine [97]
12 4:28.13 McIntosh #11 16 January 2026 Austin [98]
3 13 4:28.22 Kaylee McKeown  Australia 18 April 2024 Gold Coast [99]
4 14 4:28.43 Ye Shiwen  China 28 July 2012 London [20]
15 4:28.58 Hosszú #2 6 August 2016 Rio de Janeiro [100]
16 4:28.61 McIntosh #12 2 December 2022 Greensboro [101]
17 4:29.01 McIntosh #13 29 July 2022 Birmingham [102]
18 4:29.12 McIntosh #14 4 March 2022 Toronto [103]
19 4:29.33 Hosszú #3 30 July 2017 Budapest [104]
5 20 4:29.45 Stephanie Rice  Australia 10 August 2008 Beijing [19]
6 21 4:29.89 Kirsty Coventry  Zimbabwe 10 August 2008 Beijing [19]
21 4:29.89 Hosszú #4 4 March 2016 Marseille [105]
23 4:29.96 McIntosh #15 1 December 2023 Greensboro [106]
24 4:30.31 Hosszú #5 2 August 2009 Rome [107]
25 4:30.39 Hosszú #6 9 August 2015 Kazan [108]
Hosszú #7 28 July 2019 Gwangju [109]
7 4:30.43 Li Xuanxu  China 17 October 2009 Jinan [110]
8 4:30.79 Yu Zidi  China 19 June 2026 Hangzhou [111]
9 4:30.82 Yui Ohashi  Japan 8 April 2018 Tokyo [112]
10 4:30.85 Qi Hui  China 17 October 2009 Jinan
11 4:31.12 Katie Hoff  United States 29 June 2008 Omaha [18]
12 4:31.15 Maya Dirado  United States 6 August 2016 Rio de Janeiro [21]
13 4:31.19 Jenna Forrester  Australia 27 July 2026 Glasgow [113]
14 4:31.21 Mireia Belmonte  Spain 4 August 2013 Barcelona [114]
15 4:31.27 Elizabeth Beisel  United States 28 July 2012 London [20]
16 4:31.33 Hannah Miley  Great Britain 20 March 2009 Sheffield [115]
17 4:31.41 Katie Grimes  United States 30 July 2023 Fukuoka [93]
18 4:32.52 Emily Overholt  Canada 9 August 2015 Kazan [108]
19 4:32.53 Melanie Margalis  United States 6 March 2020 Des Moines [116]
20 4:32.54 Agostina Hein  Argentina 13 August 2026 Irvine [97]
21 4:32.76 Emma Weyant  United States 25 July 2021 Tokyo [117]
22 4:32.88 Sydney Pickrem  Canada 30 July 2017 Budapest [104]
23 4:33.01 Aimee Willmott  Great Britain 24 July 2014 Glasgow [118]
24 4:33.09 Yu Yiting  China 13 August 2026 Irvine [97]
25 4:33.26 Mio Narita  Japan 3 August 2025 Singapore [91]

Women short course

  • Correct as of October 2025[119]
Ath.# Perf.# Time Athlete Nation Date Place Ref.
1 1 4:15.48 Summer McIntosh  Canada 14 December 2024 Budapest [35]
2 2 4:18.94 Mireia Belmonte  Spain 12 August 2017 Eindhoven [34]
3 3 4:19.46 Katinka Hosszú  Hungary 2 December 2015 Netanya [33]
4 4:19.75 Hosszú #2 2 December 2015 Netanya [120]
5 4:19.82 Hosszú #3 6 August 2017 Berlin [121]
6 4:19.86 Belmonte #2 3 December 2014 Doha [32]
4 7 4:20.14 Katie Grimes  United States 14 December 2024 Budapest [35]
8 4:20.83 Hosszú #4 28 August 2014 Doha [31]
9 4:20.85 Hosszú #5 11 August 2013 Berlin [30]
5 10 4:21.04 Julia Smit  United States 18 December 2009 Manchester [29]
11 4:21.05 Hosszú #6 3 December 2014 Doha [122]
12 4:21.21 Hosszú #7 11 December 2015 Indianapolis [123]
13 4:21.23 Belmonte #3 15 December 2013 Herning [124]
14 4:21.40 Hosszú #8 11 December 2018 Hangzhou [125]
15 4:21.49 McIntosh #2 29 October 2022 Toronto [126]
16 4:21.67 Hosszú #9 6 December 2016 Windsor [127]
17 4:21.91 Hosszú #10 10 November 2018 Tokyo [128]
18 4:22.05 Hosszú #11 14 November 2017 Tokyo [129]
19 4:22.06 Hosszú #12 1 September 2014 Dubai [130]
20 4:22.18 Hosszú #13 8 August 2013 Eindhoven [131]
21 4:22.55 Belmonte #4 6 August 2017 Berlin [121]
22 4:22.68 Belmonte #5 2 November 2014 Singapore [132]
6 23 4:22.73 Yui Ohashi  Japan 10 November 2018 Tokyo [128]
7 24 4:22.88 Kathryn Meaklim  South Africa 22 November 2009 Singapore [28]
25 4:22.94 Hosszú #14 3 December 2014 Doha [32]
8 4:22.97 Ellen Walshe  Ireland 24 October 2025 Toronto [133]
9 4:23.14 Hannah Miley  Great Britain 12 December 2012 Istanbul [134]
10 4:23.33 Ye Shiwen  China 12 December 2012 Istanbul [134]
11 4:23.68 Sydney Pickrem  Canada 15 November 2020 Budapest [135]
12 4:24.15 Melanie Margalis  United States 20 December 2019 Las Vegas [136]
13 4:24.25 Mary-Sophie Harvey  Canada 24 October 2025 Toronto [133]
14 4:24.31 Dagny Knutson  United States 18 December 2009 Manchester [29]
15 4:24.34 Abbie Wood  Great Britain 14 December 2024 Budapest [35]
16 4:24.62 Caitlin Leverenz  United States 16 December 2011 Atlanta [137]
17 4:25.37 Aimee Willmott  Great Britain 15 December 2013 Herning [124]
18 4:25.50 Hali Flickinger  United States 22 November 2020 Budapest [138]
19 4:25.55 Tessa Cieplucha  Canada 16 December 2021 Abu Dhabi [139]
20 4:25.56 Elizabeth Beisel  United States 3 December 2014 Doha [32]
21 4:25.61 Zsuzsanna Jakabos  Hungary 25 November 2012 Chartres [140]
22 4:26.06 Alessia Filippi  Italy 14 December 2008 Rijeka [27]
Ella Eastin  United States 12 August 2017 Eindhoven [34]
24 4:26.31 Bailey Andison  Canada 5 September 2021 Naples [141]
25 4:26.41 Fantine Lesaffre  France 23 November 2019 London [142]

Olympic champions

Men

Edition Winner Time Notes Ref.
Japan Tokyo 1964  Dick Roth (USA) 4:45.4 WR
Mexico Mexico City 1968  Charlie Hickcox (USA) 4:48.4
West Germany Munich 1972  Gunnar Larsson (SWE) 4:31.98 OR
Canada Montreal 1976  Rod Strachan (USA) 4:23.68 WR
Soviet Union Moscow 1980  Oleksandr Sydorenko (URS) 4:22.89 OR
United States Los Angeles 1984  Alex Baumann (CAN) 4:17.41 WR
South Korea Seoul 1988  Tamás Darnyi (HUN) 4:14.75 WR
Spain Barcelona 1992  Tamás Darnyi (HUN) 4:14.23 OR
United States Atlanta 1996  Tom Dolan (USA) 4:14.90
Australia Sydney 2000  Tom Dolan (USA) 4:11.76 WR
Greece Athens 2004  Michael Phelps (USA) 4:08.26 WR
China Beijing 2008  Michael Phelps (USA) 4:03.84 WR
United Kingdom London 2012  Ryan Lochte (USA) 4:05.18
Brazil Rio de Janeiro 2016  Kosuke Hagino (JPN) 4:06.05
Japan Tokyo 2020  Chase Kalisz (USA) 4:09.42
France Paris 2024  Léon Marchand (FRA) 4:02.95 OR

Women

Edition Winner Time Notes Ref.
Japan Tokyo 1964  Donna de Varona (USA) 5:18.7 OR
Mexico Mexico City 1968  Claudia Kolb (USA) 5:08.5 OR
West Germany Munich 1972  Gail Neall (AUS) 5:02.97 WR
Canada Montreal 1976  Ulrike Tauber (GDR) 4:42.77 WR
Soviet Union Moscow 1980  Petra Schneider (GDR) 4:36.29 WR
United States Los Angeles 1984  Tracy Caulkins (USA) 4:39.24
South Korea Seoul 1988  Janet Evans (USA) 4:37.76
Spain Barcelona 1992  Krisztina Egerszegi (HUN) 4:36.54
United States Atlanta 1996  Michelle Smith (IRL) 4:39.18
Australia Sydney 2000  Yana Klochkova (UKR) 4:33.59 WR
Greece Athens 2004  Yana Klochkova (UKR) 4:34.83
China Beijing 2008  Stephanie Rice (AUS) 4:29.45 WR
United Kingdom London 2012  Ye Shiwen (CHN) 4:28.43 WR
Brazil Rio de Janeiro 2016  Katinka Hosszú (HUN) 4:26.36 WR
Japan Tokyo 2020  Yui Ohashi (JPN) 4:32.08
France Paris 2024  Summer McIntosh (CAN) 4:27.71

World champions (long course)

Men

Edition Winner Time Notes Ref.
Socialist Federal Republic of Yugoslavia Belgrade 1973  András Hargitay (HUN) 4:31.11 CR
Colombia Cali 1975  András Hargitay (HUN) 4:32.57
West Germany West Berlin 1978  Jesse Vassallo (USA) 4:20.05 WR
Ecuador Guayaquil 1982  Ricardo Prado (BRA) 4:19.78 WR
Spain Madrid 1986  Tamás Darnyi (HUN) 4:18.98 CR
Australia Perth 1991  Tamás Darnyi (HUN) 4:12.36 WR
Italy Rome 1994  Tom Dolan (USA) 4:12.30 WR
Australia Perth 1998  Tom Dolan (USA) 4:14.95
Japan Fukuoka 2001  Alessio Boggiatto (ITA) 4:13.15 WR
Spain Barcelona 2003  Michael Phelps (USA) 4:09.09 WR
Canada Montreal 2005  László Cseh (HUN) 4:09.63
Australia Melbourne 2007  Michael Phelps (USA) 4:06.22 WR
Italy Rome 2009  Ryan Lochte (USA) 4:07.01
China Shanghai 2011  Ryan Lochte (USA) 4:07.13
Spain Barcelona 2013  Daiya Seto (JPN) 4:08.69
Russia Kazan 2015  Daiya Seto (JPN) 4:08.50
Hungary Budapest 2017  Chase Kalisz (USA) 4:05.90 CR
South Korea Gwangju 2019  Daiya Seto (JPN) 4:08.95
Hungary Budapest 2022  Léon Marchand (FRA) 4:04.28 CR
Japan Fukuoka 2023  Léon Marchand (FRA) 4:02.50 WR
Qatar Doha 2024  Lewis Clareburt (NZL) 4:09.72
Singapore Singapore 2025  Léon Marchand (FRA) 4:04.73

Women

Edition Winner Time Notes Ref.
Socialist Federal Republic of Yugoslavia Belgrade 1973  Gudrun Wegner (GDR) 4:57.51 WR
Colombia Cali 1975  Ulrike Tauber (GDR) 4:52.76 CR
West Germany West Berlin 1978  Tracy Caulkins (USA) 4:40.83 WR
Ecuador Guayaquil 1982  Petra Schneider (GDR) 4:36.10 WR
Spain Madrid 1986  Kathleen Nord (GDR) 4:43.75
Australia Perth 1991  Lin Li (CHN) 4:41.45
Italy Rome 1994  Dai Guohong (CHN) 4:39.14
Australia Perth 1998  Chen Yan (CHN) 4:36.66
Japan Fukuoka 2001  Yana Klochkova (UKR) 4:36.98
Spain Barcelona 2003  Yana Klochkova (UKR) 4:36.74
Canada Montreal 2005  Katie Hoff (USA) 4:36.07 CR
Australia Melbourne 2007  Katie Hoff (USA) 4:32.89 WR
Italy Rome 2009  Katinka Hosszú (HUN) 4:30.31 CR
China Shanghai 2011  Elizabeth Beisel (USA) 4:31.78
Spain Barcelona 2013  Katinka Hosszú (HUN) 4:30.41
Russia Kazan 2015  Katinka Hosszú (HUN) 4:30.39
Hungary Budapest 2017  Katinka Hosszú (HUN) 4:29.33 CR
South Korea Gwangju 2019  Katinka Hosszú (HUN) 4:30.39
Hungary Budapest 2022  Summer McIntosh (CAN) 4:32.04
Japan Fukuoka 2023  Summer McIntosh (CAN) 4:27.11 CR
Qatar Doha 2024  Freya Colbert (GBR) 4:37.14
Singapore Singapore 2025  Summer McIntosh (CAN) 4:25.78 CR

World champions (short course)

Men

Edition Winner Time Notes Ref.
Spain Palma de Mallorca 1993  Curtis Myden (CAN) 4:10.41 CR
Brazil Rio de Janeiro 1995  Matthew Dunn (AUS) 4:08.02 CR
Sweden Gothenburg 1997  Matthew Dunn (AUS) 4:06.89 CR
Hong Kong Hong Kong 1999  Matthew Dunn (AUS) 4:06.05 CR
Greece Athens 2000  Jani Sievinen (FIN) 4:09.54
Russia Moscow 2002  Tom Wilkens (USA) 4:04.82 CR
United States Indianapolis 2004  Oussama Mellouli (TUN) 4:07.02
China Shanghai 2006  Ryan Lochte (USA) 4:02.49 CR
United Kingdom Manchester 2008  Ryan Lochte (USA) 4:03.21
United Arab Emirates Dubai 2010  Ryan Lochte (USA) 3:55.50 WR
Turkey Istanbul 2012  Daiya Seto (JPN) 3:59.15
Qatar Doha 2014  Daiya Seto (JPN) 3:56.33
Canada Windsor 2016  Daiya Seto (JPN) 3:59.24
China Hangzhou 2018  Daiya Seto (JPN) 3:56.43
United Arab Emirates Abu Dhabi 2021  Daiya Seto (JPN) 3:56.26
Australia Melbourne 2022  Daiya Seto (JPN) 3:55.75
Hungary Budapest 2024 Ilya Borodin (NAB) 3:56.83

Women

Edition Winner Time Notes Ref.
Spain Palma de Mallorca 1993  Dai Guohong (CHN) 4:29.00 WR
Brazil Rio de Janeiro 1995  Joanne Malar (CAN) 4:36.40
Sweden Gothenburg 1997  Emma Johnson (AUS) 4:35.18
Hong Kong Hong Kong 1999  Yana Klochkova (UKR) 4:32.32
Greece Athens 2000  Yana Klochkova (UKR) 4:32.32
Russia Moscow 2002  Yana Klochkova (UKR) 4:30.63
United States Indianapolis 2004  Kaitlin Sandeno (USA) 4:30.12
China Shanghai 2006  Qi Hui (CHN) 4:34.28
United Kingdom Manchester 2008  Kirsty Coventry (ZIM) 4:26.52 WR
United Arab Emirates Dubai 2010  Mireia Belmonte (ESP) 4:24.21 CR
Turkey Istanbul 2012  Hannah Miley (GBR) 4:23.14 CR
Qatar Doha 2014  Mireia Belmonte (ESP) 4:19.86 WR
Canada Windsor 2016  Katinka Hosszú (HUN) 4:21.67
China Hangzhou 2018  Katinka Hosszú (HUN) 4:21.40
United Arab Emirates Abu Dhabi 2021  Tessa Cieplucha (CAN) 4:25.55
Australia Melbourne 2022  Hali Flickinger (USA) 4:26.51
Hungary Budapest 2024  Summer McIntosh (CAN) 4:15.48 WR

References

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  2. ↑ Phillip Whitten (15 August 2002). "FLASH!! Michael Phelps, Erik Vendt Both Break the World Record in the 400 IM". Swimming World. Retrieved 20 September 2025.
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  4. ↑ "10th FINA World Championships - Men's 400m IM Final Results" (PDF). Omega Timing. 27 July 2003. Retrieved 12 March 2025.
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  6. ↑ Stephen Thomas (14 August 2004). "New World Record as Michael "the Machine" Lowers 'his' 400 IM Yet Again! Vendt takes Silver, as USA Goes 1-2". Swimming World. Retrieved 20 September 2025.
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  141. ↑ "2021 International Swimming League (Match 4) - Women's 400m IM Results" (PDF). Omega Timing. 5 September 2021. Retrieved 3 May 2025.
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