Longest Swims by Duration
Longest open water swims by duration (24 hours and longer) - documented, nonstop, unassisted, non-river.*
| # | Name | Swim | Time | Km | Year | |
|---|---|---|---|---|---|---|
| 1 | Sarah Thomas |  |
Lake Champlain (Gardiner Isl loop from Rouses Pt NY) | 67:16 | 168.3 | 2017 |
| 2 | Vicki Keith | |
Lake Ontario (Point Petre to Lake Ontario Park via N Amherst Isl) | 63:40 | 74 | 2005 |
| 3 | Vicki Keith | |
Lake Ontario (Toronto (Leslie St Spit) - Port Dalhousie - Toronto (harbour)) | 56:10 | 95 | 1987 |
| 4 | Sarah Thomas | |
Lake Powell (Bullfrog to Wahweap) | 56:05 | 128.7 | 2016 |
| 5 | Sarah Thomas | |
English Channel (England - France - England - France - England) | 54:10 | 132 | 2019 |
| 6 | Vicki Keith | |
Lake Michigan (Union Pier MI to Chicago IL) | 52:45 | 72 | 1988 |
| 7 | Caroline Block | |
Lake George (Lake George Village - Ticonderoga - Lake George Village) | 52:24 | 103.6 | 2020 |
| 8 | Neil Agius |  |
Mediterranean Sea (Linosa to Gozo) | 52:07 | 125.7 | 2021 |
| 9 | Steve Stievenart | |
Catalina Channel (Catalina - mainland - Catalina - mainland) | 51:11 | 96.9 | 2023 |
| 10 | V.S. Kumar Anandan | |
Palk Strait (Talaimannar to Dhanushkodi to Talaimannar) | 51:00 | 58 | 1974 |
| 11 | Veljko Rogošić | |
Adriatic Sea (Grado to Riccione) | 50:10 | 194 | 2006 |
| 12 | Joe Zemaitis | |
Roosevelt Lake (4.5-way lengthwise) | 47:23 | 112 | 2020 |
| 13 | Vicki Keith | |
Lake Huron (Harbor Beach MI to Goderich ON) | 46:55 | 75 | 1988 |
| 14 | James Loreto | |
Around Manhattan Island (3x Manhattan circumnavigation (CW) + Pier A to GWB) | 43:43 | 165.9 | 2021 |
| 15 | Sean O'Connell | |
Around Bermuda (Bermuda circumnavigation (CW)) | 43:27 | 58.7 | 1976 |
| 16 | Kevin Murphy | |
Lake Balaton (Lake Balaton length (dir. unknown)) | 43:15 | 75.5 | 1973 |
| 17 | Antonio Abertondo | |
English Channel (England - France - England) | 43:10 | 66 | 1961 |
| 18 | Vedika Karin Bolliger | |
Lake Geneva (Chillon Castle to Bains des Pâquis (E-W)) | 42:41 | 69 | 1999 |
| 19 | Sean Nuttall | |
Lake Ontario (Toronto - Port Dalhousie - Toronto) | 42:27 | 100.5 | 2022 |
| 20 | V.S. Kumar Anandan | |
Palk Strait (Valvettithurai to Point Calimere) | 42:00 | 59 | 1963 |
| 21 | Feras Mouala | |
Mediterranean Sea (Zaferburnu, Cyprus to Cote D'Azur, Syria) | 41:45 | 106 | 2007 |
| 22 | Chloë McCardel | |
Exuma Sound (South Eleuthera Island to Nassau) | 41:21 | 124.4 | 2014 |
| 23 | Jay Serdula | |
Lake Ontario (Niagara River mouth to Toronto (Leslie St Spit)) | 41:01 | 44.2 | 2008 |
| 24 | Cameron Bellamy | |
Around Barbados (Barbados circumnavigation) | 40:46 | 90 | 2018 |
| 25 | Jenny Kammersgaard | |
Baltic Sea (Gedser to Nienhagen) | 40:26 | 43.8 | 1938 |
| 26 | Wendy Trehiou | |
English Channel (England - France - England) | 39:09 | 66 | 2013 |
| 27 | Jon Erikson | |
English Channel (England - France - England - France) | 38:27 | 99 | 1981 |
| 28 | Marcy MacDonald | |
English Channel (Ramsgate, England to Belgium) | 38:20 | 82.6 | 2022 |
| 29 | Stefanos Meltsis | |
Toroneos Gulf Marathon (Kallithea / Nikiti 4-way crossing) | 37:50 | 98 | 2011 |
| 30 | Ted Erikson | |
Jim Moran Lake Michigan Swim Challenge (Chicago IL to Benton Harbor MI) | 37:31 | 96.6 | 1963 |
| 31 | Ted Erikson | |
Jim Moran Lake Michigan Swim Challenge (Burnham Harbor, Chicago to Washington Park Beach, Michigan City) | 36:37 | 60 | 1961 |
| 32 | Imre Szénási | |
Lake Balaton (Balatonkenese to Keszthely) | 36:29 | 75.5 | 1961 |
| 33 | Sal Minty-Gravett | |
English Channel (England - France - England) | 36:26 | 66 | 2016 |
| 34 | Margarita Llorens Bagur | |
Ibiza Channel (Cap de Sant Antoni to Cala Codolar) | 36:16 | 90.3 | 2018 |
| 35 | Chloë McCardel | |
English Channel (England - France - England - France) | 36:12 | 99 | 2015 |
| 36 | Kevin Murphy | |
English Channel (England - France - England) | 36:03 | 66 | 1975 |
| 37 | Ken Mignosa | |
California Channel Islands (Cardwell Pt (S. Miguel Isl) to Campo Grande Pt (S. Cruz Isl)) | 35:49 | 67.1 | 2019 |
| 38 | Ted Erikson | |
Jim Moran Lake Michigan Swim Challenge (Chicago IL to Kenosha WI) | 35:37 | 80.5 | 1962 |
| 39 | Giannis Kotsiopoulos | |
Toroneos Gulf Marathon (Kallithea / Nikiti 3-way crossing) | 35:30 | 73.5 | 2005 |
| 40 | Diane Struble | |
Lake George (Ticonderoga to Lake George Village) | 35:30 | 51.8 | 1958 |
| 41 | Sofia Psilolignou | |
Toroneos Gulf Marathon (Kallithea / Nikiti 2-way crossing) | 35:30 | 49 | 2008 |
| 42 | John Munro | |
Lake Ontario (Sackets Harbor NY to Kingston ON) | 35:15 | 55 | 2003 |
| 43 | Kevin Murphy | |
English Channel (England - France - England) | 35:10 | 66 | 1970 |
| 44 | Lisa Cummins | |
English Channel (England - France - England) | 35:00 | 66 | 2009 |
| 45 | Harry Briggs | |
Lake Erie (Marblehead Light to Point Pelee) | 34:55 | 45 | 1957 |
| 46 | Steve Stievenart | |
English Channel (England - France - England) | 34:45 | 66 | 2020 |
| 47 | Alison Streeter | |
English Channel (England - France - England - France) | 34:40 | 99 | 1990 |
| 48 | Abdel Latif Abou Heif | |
Jim Moran Lake Michigan Swim Challenge (Chicago IL to Benton Harbor MI) | 34:38 | 96.6 | 1963 |
| 49 | Cindy Cleveland | |
Catalina Island circumnavigation (Catalina Island circumnavigation (CCW)) | 34:24 | 74.7 | 1979 |
| 50 | Paul Chotteau | |
Catalina Channel (Catalina Island to Mainland) | 33:50 | 32.3 | 1936 |
| 51 | Stacy Chanin | |
Around Manhattan Island (3x Manhattan circumnavigation (CCW)) | 33:29 | 137.7 | 1984 |
| 52 | Sandra Blewett | |
Lake Taupo (Taupo-Waihi-Taupo) | 33:21 | 80.4 | 1986 |
| 53 | Courtney Moates Paulk | |
Catalina Channel (Mainland - Catalina - Mainland) | 33:13 | 64.6 | 2017 |
| 54 | Harry Briggs | |
Lake Winnipesaukee (Alton Bay to Wolfeboro to Weirs Beach) | 33:12 | 36 | 1963 |
| 55 | Mark Sheridan | |
Lake Geneva (Chillon Castle to Bains des Pâquis (E-W)) | 33:06 | 69 | 2016 |
| 56 | Skip Storch | |
Around Manhattan Island (3x Manhattan circumnavigation (CCW)) | 32:52 | 137.7 | 2007 |
| 57 | Jaimie Monahan | |
Lake Geneva (Chillon Castle to Bains des Pâquis (E-W)) | 32:52 | 69 | 2015 |
| 58 | Vicente Arena | |
Rio de la Plata (Colonia del Sacramento (Uruguay) - Punta Lara (Argentina)) | 32:50 | 40 | 1943 |
| 59 | Nicholas Murch | |
Lake Geneva (Chillon Castle to Bains des Pâquis (E-W)) | 32:46 | 69 | 2016 |
| 60 | Carlos Costa | |
Lake Ontario (Niagara River mouth to Toronto (Leslie St Spit)) | 32:43 | 44.2 | 1993 |
| 61 | Kevin Murphy | |
English Channel (France - England - France) | 32:42 | 66 | 1987 |
| 62 | Jenna Lambert | |
Lake Ontario (Baird Pt NY to Lake Ontario Park, Kingston ON) | 32:18 | 33 | 2006 |
| 63 | George Dempsey | |
Lake George (Ticonderoga to Lake George Village) | 32:15 | 51.8 | 1967 |
| 64 | Jose Cortinas | |
Catalina Channel (Mainland to Catalina Island) | 32:10 | 32.3 | 1953 |
| 65 | Krzysztof Gajewski | |
Masurian Lake District (Northwest Mamry Lake to Suchy Róg, Sniardwy Lake) | 31:53 | 77.5 | 2019 |
| 66 | Sarah Eismann | |
Around Bermuda (Bermuda circumnavigation (CW)) | 31:28 | 58.7 | 2018 |
| 67 | Bill Stevens | |
Lake George (Ticonderoga to Lake George Village) | 31:27 | 51.8 | 1962 |
| 68 | Brenda Sherratt | |
Loch Ness (Loch Ness (dir. unknown)) | 31:27 | 36.2 | 1966 |
| 69 | Greta Andersen | |
Jim Moran Lake Michigan Swim Challenge (Chicago IL to Kenosha WI) | 31:00 | 80.5 | 1962 |
| 70 | Vicki Keith | |
Lake Ontario (Niagara River mouth to Toronto (west waterfront)) | 31:00 | 49 | 1989 |
| 71 | Hamza Bakircioglu | |
Bodensee (Bodmann DE to Bregenz AT) | 30:45 | 64 | 2016 |
| 72 | Antonio Abertondo | |
Rio de la Plata (Colonia del Sacramento (Uruguay) - Punta Lara (Argentina)) | 30:45 | 40 | 1950 |
| 73 | Nicky Farrugia | |
Malta Channel (Sicily (P. Secca) to Gozo (Xwejni Bay)) | 30:17 | 82 | 1985 |
| 74 | Jessi Harewicz | |
Strait of Georgia (Nanaimo to Kitsilano Beach, Vancouver) | 30:13 | 58.6 | 2019 |
| 75 | Ted Erikson | |
English Channel (England - France - England) | 30:03 | 66 | 1965 |
| 76 | Sarah Thomas | |
Lake Memphremagog (Magog to Newport to Magog) | 30:01 | 80 | 2013 |
| 77 | Jon Erikson | |
English Channel (England - France - England) | 29:50 | 66 | 1975 |
| 78 | Rick Seirer | |
English Channel (England - France - England) | 29:46 | 66 | 2019 |
| 79 | Antonio Abertondo | |
Rio de la Plata (Colonia del Sacramento (Uruguay) - Punta Lara (Argentina)) | 29:30 | 40 | 1946 |
| 80 | Jenny Kammersgaard | |
Kattegat (Sjællands Odde to Jutland) | 29:25 | 39 | 1937 |
| 81 | Ken Mignosa | |
Santa Barbara Channel (Mainland to Santa Cruz Island (via east Anacapa) to Mainland) | 29:22 | 66 | 2018 |
| 82 | Jerry Ferris | |
Lake George (Ticonderoga to Lake George Village) | 29:15 | 51.8 | 1983 |
| 83 | Lita Tiraboschi | |
Rio de la Plata (Colonia del Sacramento (Uruguay) - Punta Lara (Argentina)) | 29:15 | 40 | 1943 |
| 84 | Sophie Etheridge | |
English Channel (England to France) | 29:04 | 33 | 2023 |
| 85 | Vedika Karin Bolliger | |
Lake Zurich (Zürich Lido Tiefenbrunnen - Lido Rapperswil - Zürich Lido Tiefenbrunnen) | 29:00 | 52.8 | 1997 |
| 86 | Kim Middleton | |
Lake Ontario (Toronto to Niagara Peninsula) | 29:00 | 46 | 1993 |
| 87 | Jose Cortinas | |
Catalina Channel (Catalina Island to Mainland) | 28:55 | 32.3 | 1952 |
| 88 | Steve Stievenart | |
Catalina Channel (Mainland - Catalina - Mainland) | 28:45 | 64.6 | 2022 |
| 89 | Jackie Cobell | |
English Channel (England to France) | 28:44 | 33 | 2010 |
| 90 | Tina Neill | |
California Channel Islands (San Clemente Island to mainland) | 28:41 | 83.7 | 2012 |
| 91 | Jaimie Monahan | |
Lake Geneva (Bains des Pâquis to Chillon Castle (W-E)) | 28:36 | 69 | 2016 |
| 92 | Anne Cleveland | |
English Channel (England - France - England) | 28:36 | 66 | 2004 |
| 93 | Philip Rush | |
English Channel (England - France - England - France) | 28:21 | 99 | 1987 |
| 94 | Carlos Acosta Aldrete | |
English Channel (England - France - England) | 28:16 | 66 | 2023 |
| 95 | Margarita Llorens Bagur | |
Mallorca Channel (Ibiza to Mallorca) | 28:13 | 82 | 2015 |
| 96 | Neil Agius | |
Malta Channel (Sicily (P. Braccetto) to Malta (St Julian's Bay)) | 28:08 | 100 | 2020 |
| 97 | Jason Betley | |
Catalina Channel (Mainland - Catalina - Mainland) | 28:06 | 64.6 | 2015 |
| 98 | Caitlin O'Reilly | |
Lake Taupo (Taupo-Waihi-Taupo) | 28:02 | 80.4 | 2022 |
| 99 | Bridget Simpson | |
Lake George (Lake George Village to Ticonderoga) | 28:02 | 51.8 | 2017 |
| 100 | Prafulla Nocker | |
Lake Zurich (Zürich Bürkliplatz - Lido Rapperswil - Zürich Bürkliplatz) | 28:00 | 55.3 | 1986 |
| 101 | John Batchelder | |
Lake Powell (Dangling Rope Marina to beach across from the Rincon) | 28:00 | 54 | 2018 |
| 102 | Deirdre Ward | |
English Channel (England - France - England) | 27:52 | 66 | 2016 |
| 103 | Rebecca Hollingsworth | |
Lake Taupo (Taupo-Waihi-Taupo) | 27:48 | 80.4 | 2022 |
| 104 | Courtney Moates Paulk | |
English Channel (England - France - England) | 27:36 | 66 | 2021 |
| 105 | Liane Llewellyn Hickling | |
English Channel (England - France - England) | 27:35 | 66 | 2009 |
| 106 | Maya Merhige | |
Kaiwi Channel (Molokai to Oahu) | 27:33 | 45 | 2023 |
| 107 | Nick Adams | |
English Channel (England - France - England) | 27:28 | 66 | 1995 |
| 108 | Murugupillai Navratnaswami | |
Palk Strait (Valvettithurai to Point Calimere) | 27:08 | 59 | 1954 |
| 109 | Rick Goodwin | |
Lake Ontario (Niagara River mouth to Toronto (Leslie St Spit)) | 27:06 | 44.2 | 1994 |
| 110 | Vicki Keith | |
Lake Ontario (Toronto (Leslie St Spit) to Port Dalhousie) | 26:59 | 45.8 | 1986 |
| 111 | Greta Andersen | |
Catalina Channel (Catalina - Mainland - Catalina) | 26:53 | 64.6 | 1958 |
| 112 | Kevin Murphy | |
Around Isle of Wight (Isle of Wight circumnavigation) | 26:51 | 90 | 1971 |
| 113 | Stella Taylor | |
Lake George (Ticonderoga to Lake George Village) | 26:51 | 51.8 | 1977 |
| 114 | Henry Sullivan | |
English Channel (England to France) | 26:50 | 33 | 1923 |
| 115 | John Bulsza | |
Lake Huron (Port Sanilac MI to Port Franks Beach ON) | 26:49 | 55 | 1996 |
| 116 | Annaleise Carr-Haley | |
Lake Ontario (Queen's Royal Park to Marilyn Bell Park) | 26:40 | 50.5 | 2012 |
| 117 | Kim Lumsdon | |
Lake Ontario (Queen's Royal Park to Marilyn Bell Park) | 26:38 | 50.5 | 2006 |
| 118 | Anna Wardley | |
Around Isle of Wight (Isle of Wight circumnavigation) | 26:33 | 90 | 2013 |
| 119 | José Eduardo do Amaral Ferreira | |
Rio de Janeiro coast (Leme - Pontal - Leme) | 26:32 | 70 | 2021 |
| 120 | Dori Miller | |
English Channel (England - France - England) | 26:21 | 66 | 2014 |
| 121 | Kim Middleton | |
Lake Ontario (Toronto to Niagara Peninsula) | 26:14 | 46 | 1994 |
| 122 | Susan Baddeley | |
Loch Lomond solo (Loch Lomond (dir. unknown)) | 26:10 | 34.8 | 1960 |
| 123 | Ryan Nelson | |
Lake Tahoe (Incline - Camp Richardson - Incline) | 26:05 | 68.4 | 2023 |
| 124 | Shelagh Freedman | |
Lake Ontario (Queen's Royal Park to Marilyn Bell Park) | 26:03 | 50.5 | 1993 |
| 125 | Tony Bailey | |
English Channel (England to France) | 25:56 | 33 | 2014 |
| 126 | Pat Budny | |
Lake Erie (Long Point ON to Budny Beach, Presque Isle) | 25:52 | 41 | 1975 |
| 127 | Stuart Johnson | |
English Channel (England - France - England) | 25:50 | 66 | 2011 |
| 128 | Jason Betley | |
English Channel (England - France - England) | 25:47 | 66 | 2023 |
| 129 | Deirdre Ward | |
Lake Geneva (Chillon Castle to Bains des Pâquis (E-W)) | 25:45 | 69 | 2019 |
| 130 | Mihir Sen | |
Palk Strait (Talaimannar to Dhanushkodi) | 25:44 | 29 | 1966 |
| 131 | Paula Stephanson | |
Lake Michigan (Chicago (Rainbow Bch) to Michigan City (Washington Park Bch)) | 25:38 | 53.5 | 2009 |
| 132 | Helen Conway | |
Lake Geneva (Chillon Castle to Bains des Pâquis (E-W)) | 25:37 | 69 | 2017 |
| 133 | Graco Morlan | |
Catalina Channel (Mainland - Catalina - Mainland) | 25:37 | 64.6 | 2019 |
| 134 | Forrest Nelson | |
Catalina Island circumnavigation (Catalina Island circumnavigation (CW)) | 25:35 | 74.7 | 2011 |
| 135 | Attila Mányoki | |
Lake Balaton (Balatonkenese to Keszthely) | 25:32 | 75.5 | 2008 |
| 136 | Stephen Rouch | |
Lake Memphremagog (Newport to Magog to Newport) | 25:12 | 80 | 2019 |
| 137 | Luis Garramendy | |
Rio de la Plata (Colonia del Sacramento (Uruguay) - Punta Lara (Argentina)) | 25:12 | 40 | 1924 |
| 138 | Bob Weir | |
Lake Simcoe (Wasago (Lake Couchiching) to Barrie (Centennial Park)) | 25:08 | 56 | 1991 |
| 139 | Heather Roka | |
English Channel (England - France - England) | 25:07 | 66 | 2021 |
| 140 | Bill Sadlo | |
Lake Ontario (Niagara River mouth to Toronto (west waterfront)) | 25:01 | 49 | 1957 |
| 141 | Jessi Harewicz | |
Monterey Bay (Santa Cruz to Monterey) | 24:56 | 40.3 | 2023 |
| 142 | Elizabeth Fry | |
English Channel (England - France - England) | 24:41 | 66 | 2011 |
| 143 | Forrest Nelson | |
Catalina Channel (Catalina Island to Mainland) | 24:39 | 32.3 | 2013 |
| 144 | Michael Read | |
Around Isle of Wight (Isle of Wight circumnavigation) | 24:36 | 90 | 1973 |
| 145 | Jaime Caballero Echeverría | |
English Channel (England - France - England) | 24:35 | 66 | 2013 |
| 146 | Ariana Wohlstattar | |
Catalina Channel (Mainland - Catalina - Mainland) | 24:35 | 64.6 | 2023 |
| 147 | Boguslaw Ogrodnik | |
Lake Tahoe (Camp Richardson to Incline Village) | 24:34 | 34.2 | 2018 |
| 148 | Bridgette Hobart | |
Finger Lakes (Seneca Lake - Geneva to Watkins Glen) | 24:31 | 54.9 | 2015 |
| 149 | Stephanie Hopson | |
English Channel (England to France) | 24:31 | 33 | 2016 |
| 150 | Craig Lenning | |
Lake Tahoe (Incline - Camp Richardson - Incline) | 24:30 | 68.4 | 2013 |
| 151 | Stuart Johnson | |
English Channel (England - France - England) | 24:30 | 66 | 2012 |
| 152 | Cindy Cleveland | |
Catalina Channel (Mainland - Catalina - Mainland) | 24:30 | 64.6 | 1977 |
| 153 | Joe Zemaitis | |
Catalina Channel (Mainland - Catalina - Mainland) | 24:28 | 64.6 | 2021 |
| 154 | Pat Gallant-Charette | |
Lake Ontario (Queen's Royal Park to Marilyn Bell Park) | 24:28 | 50.5 | 2017 |
| 155 | Susanne Robinson | |
Lake Ontario (Niagara River mouth to Toronto (Leslie St Spit)) | 24:28 | 44.2 | 2010 |
| 156 | Madhu Nagaraja | |
Lake Ontario (Port Dalhousie to Oakville) | 24:26 | 41 | 2012 |
| 157 | Bruno Baumgartner | |
Bodensee (Bodmann DE to Bregenz AT) | 24:20 | 64 | 2013 |
| 158 | Antonio Abertondo | |
English Channel (France to England) | 24:20 | 33 | 1961 |
| 159 | Lilian Harrison | |
Rio de la Plata (Colonia del Sacramento (Uruguay) - Punta Lara (Argentina)) | 24:19 | 40 | 1923 |
| 160 | Antonio Argüelles | |
Catalina Channel (Mainland - Catalina - Mainland) | 24:17 | 64.6 | 2019 |
| 161 | Marcy MacDonald | |
English Channel (England - France - England) | 24:16 | 66 | 2013 |
| 162 | Beth French | |
Kaiwi Channel (Molokai to Oahu) | 24:10 | 45 | 2012 |
| 163 | Pat Gallant-Charette | |
Lake Memphremagog (Newport (Eastside) to Magog) | 24:08 | 39.6 | 2019 |
| 164 | Anna McClarnon | |
English Channel (England to France) | 24:08 | 33 | 2002 |
| 165 | Jessica Kieras | |
California Channel Islands (Santa Barbara Island to Pt Vicente) | 24:07 | 63.8 | 2022 |
| 166 | Wendy Trehiou | |
Channel Islands (St. Malo to Jersey) | 24:07 | 53.3 | 2015 |
| 167 | Jaimie Monahan | |
Lake Maggiore (Tenero-Contra CH to Sesto Calende IT) | 24:02 | 59.4 | 2017 |
| 168 | Amy Hiland | |
Catalina Channel (Catalina Island to Mainland) | 24:00 | 32.3 | 1958 |
* List does not include unverified swim claims, stage swims, swims assisted by nonstandard equipment such as wetsuits, fins, shark cages, and stinger suits, or downstream river swims. River swims are still being researched and will be listed separately.
Also see: Longest Swims by Distance