 | | | | Av Time | | | Place | Races | 1st | 2nd | 3rd | Trophies | |
Lang I R | 22.9 | | | 53 | 1 | 0 | 0 | 0 | | |
| 1989 | | 22:54:32 | | Dawes S R & Lang I R | River Runners | 53 | | | | | |  |
Lang S | 19.4 | | | 20 | 1 | 0 | 0 | 0 | | |
| 1993 | | 19:24:40 | | Bird J & Lang S | Worcester | 20 | | | | | |  |
Langley-Smith G F | 24.6 | | | 17 | 1 | 0 | 0 | 0 | | |
| 1970 | | 24:38:56 | | Langley-Smith G F & Marsh S A | 21 (Artists) | 17 | | | | | |  |
Lanighan Paul | 17.7 | | | 3 | 2 | 0 | 1 | 1 | | |
| 1995 | | 18:08:00 | | Lanighan Paul & Quill Phillip | Falcon & Woodmill | 3 | | | | 1 | Lee |  |
| 2007 | | 17:21:40 | | Hendron Richard & Lanighan Paul | Richmond & Falcon | 2 | | | 1 | | |  |
Lankester T J R | 21.6 | | | 21 | 3 | 0 | 0 | 1 | | |
| 1982 | | 22:43:34 | | Lankester T J R & Newman P J | Maidstone | 46 | | | | | |  |
| 1983 | | 21:03:02 | | Lankester T J R & Anderson J L | Gillingham | 3 | | | | 1 | |  |
| 1997 | | 20:54:43 | | Lankester T J R & Blatchly A Mark | Reading and Leighton Park & Nottingham | 13 | | | | | |  |
Larchet L A | 31.9 | | | 39 | 1 | 0 | 0 | 0 | | |
| 1967 | | 31:52:30 | | Larchet L A & Hunter P | 16th Twickenham & Leander Scouts | 39 | | | | | |  |
Larder J | 47.7 | | | 54 | 1 | 0 | 0 | 0 | | |
| 1961 | | 47:43:30 | | Johnson D & Larder J | Independent | 54 | | | | | |  |
Larnach A | 32.8 | | | 43 | 1 | 0 | 0 | 0 | | |
| 1967 | | 32:50:00 | | Larnach A & Lee H D | RAF West Raynham | 43 | | | | | |  |
Larsen P F | 20.4 | | | 14 | 2 | 0 | 0 | 0 | | |
| 1990 | | 21:12:03 | | Hadberg Aksel & Larsen P F | Hvidovre Kajak klub | 23 | | | | | |  |
| 1991 | | 19:38:41 | | Hadberg Aksel & Larsen P F | Kobenhavns Kajak Kreds | 4 | | | | | Overseas |  |
Larter A J | 19.6 | | | 12 | 2 | 0 | 0 | 0 | | |
| 1979 | | 18:52:14 | | Larter A J & Hodson F J | Royal Electrical & Mechanical Engineers | 11 | | | | | |  |
| 1980 | | 20:14:12 | | Larter A J & Brash T M | Royal Electrical & Mechanical Engineers | 12 | | | | | |  |
Last James | 25.3 | | | 24 | 1 | 0 | 0 | 0 | | |
| 2025 | | 25:18:30 | | Last James & Bell Stuart | Devizes | 24 | | | | | |  |
Last N | 20.4 | | | 23 | 1 | 0 | 0 | 0 | | |
| 1982 | | 20:25:25 | | Hayes Des & Last N | 21 (Artists) | 23 | | | | | |  |
Latham-Boal Helena | 24.3 | | | 14 | 1 | 0 | 0 | 0 | | |
| 2003 | | 24:15:11 | | Drummond John & Latham-Boal Helena | Reading | 14 | | | | | Mixed |  |
Latham J F | 35.7 | | | 101 | 1 | 0 | 0 | 0 | | |
| 1982 | | 35:40:14 | | Latham J F & Brawley A | 266 Bty RA (V) | 101 | | | | | |  |
Latimer B | 22.7 | | | 4 | 1 | 0 | 0 | 0 | | |
| 1961 | | 22:44:00 | | Latimer B & Joyles B | Royal Marines | 4 | | | | | |  |
Latimer C | 27.4 | | | 23 | 1 | 0 | 0 | 0 | | |
| 1976 | | 27:24:25 | | Saxby D & Latimer C | Milton Keynes & Aylesbury | 23 | | | | | |  |
Latvenas Arnoldas | 20.4 | | | 12 | 4 | 0 | 0 | 0 | | |
| 2023 | | 19:31:37 | | Latvenas Arnoldas & Dubauskas Arunas | Richmond & International | 16 | | | | | |  |
| 2026 | | 20:38:51 | | Latvenas Arnoldas & Satikas Deividas | International | 11 | | | | | |  |
| 2026 | | 20:38:51 | | Latvenas Arnoldas & Satikas Deividas | International | 11 | | | | | |  |
| 2026 | | 20:38:51 | | Latvenas Arnoldas & Satikas Deividas | International | 11 | | | | | |  |
Latvenas Arnoldas (Teddington) | 18.9 | | | 18 | 2 | 0 | 0 | 0 | | |
| 2022 | | 19:47:51 | | Latvenas Arnoldas & Hargrave Stephen | Richmond | 20 | | | | | |  |
| 2024 | | 17:59:39 | | Dums Stefan & Latvenas Arnoldas | Richmond | 15 | | | | | |  |
Laughlin M | 27.3 | | | 95 | 1 | 0 | 0 | 0 | | |
| 1984 | | 27:15:21 | | Leggott J & Laughlin M | Bromley | 95 | | | | | |  |
Laughton N | 40.9 | | | 99 | 1 | 0 | 0 | 0 | | |
| 1997 | FB | 40:55:36 | | Laughton N & Weir J | Artists Rifles | 99 | | | | | |  |
Lavarack Ian | 23.5 | | | 37 | 1 | 0 | 0 | 0 | | |
| 2013 | | 23:27:42 | | Lavarack Ian & Crawford Roger | Richmond | 37 | | | | | |  |
Lavarack Michael | 20.1 | | | 5 | 1 | 0 | 0 | 0 | | |
| 2012 | | 20:04:58 | | Lavarack Michael & Jenkins Jay | Richmond & Natal | 5 | | | | | |  |
Lavarack Michael (Teddington) | 15.2 | | | 1 | 1 | 1 | 0 | 0 | | |
| 2022 | | 15:12:15 | | Birkett Andrew & Lavarack Michael | Richmond | 1 | | 1 | | | Civilian |  |
Lavender | 25.8 | | | 3 | 1 | 0 | 0 | 1 | | |
| 1951 | | 25:47:00 | | Rawll P L & Lavender | RM Amphibious School | 3 | | | | 1 | |  |
Lavender Guy | 26.1 | | | 85 | 1 | 0 | 0 | 0 | | |
| 2009 | | 26:05:13 | | Lavender Guy & Swannick Sam | Parachute Regiment | 85 | | | | | |  |
Lavery Gary | 27.1 | | | 67 | 1 | 0 | 0 | 0 | | |
| 2011 | | 27:04:37 | | Wells Leigh & Lavery Gary | Devizes & Independent | 67 | | | | | |  |
Law R C | 21.7 | | | 18 | 1 | 0 | 0 | 0 | | |
| 1975 | | 21:42:40 | | Law R C & Flynn D C | Royal Navy | 18 | | | | | |  |
Lawes Vince | 27.7 | | | 102 | 1 | 0 | 0 | 0 | | |
| 2009 | | 27:41:27 | | Adshead Maurice & Lawes Vince | Ind - The Royal Oak | 102 | | | | | |  |
Lawler P S | 19.4 | | | 1 | 1 | 1 | 0 | 0 | | |
| 1971 | | 19:22:26 | | Lawler P S & Baker C J | Richmond | 1 | | 1 | | | Civilian |  |
Lawley C | 23.3 | | | 34 | 1 | 0 | 0 | 0 | | |
| 1991 | | 23:20:06 | | Blake G D & Lawley C | Royal Engineers | 34 | | | | | |  |
Lawrence C | 23.6 | | | 29 | 2 | 0 | 0 | 0 | | |
| 1983 | | 25:44:10 | | Purvis I & Lawrence C | 21 (Artists) | 31 | | | | | Reserve |  |
| 1984 | | 21:27:45 | | Lawrence C & Montgomery C W | 21 (Artists) | 26 | | | | | |  |
Lawrence James | 25.1 | | | 63 | 2 | 0 | 0 | 0 | | |
| 2014 | | 26:22:31 | | Purse John & Lawrence James | Independent | 86 | | | | | |  |
| 2016 | | 23:50:06 | | Lawrence James & Purse John | Independent | 40 | | | | | |  |
Lawrence Phillip | 21.6 | | | 16 | 1 | 0 | 0 | 0 | | |
| 2013 | | 21:37:20 | | Catto John & Lawrence Phillip | Army Canoe Union | 16 | | | | | |  |
Lawrence S P | 22.2 | | | 44 | 2 | 0 | 0 | 0 | | |
| 1987 | | 23:03:59 | | Gardiner A C & Lawrence S P | | 56 | | | | | |  |
| 1989 | | 21:16:40 | | Lawrence S P & Gardiner A C | | 31 | | | | | |  |
Lawrence Tina | 36.5 | | | 118 | 1 | 0 | 0 | 0 | | |
| 1992 | | 36:27:05 | | Lawrence Tina & Adams S | Independent | 118 | | | | | |  |
Lawrence W T | 49.4 | | | 40 | 1 | 0 | 0 | 0 | | |
| 1966 | | 49:25:10 | | Stokes M J & Lawrence W T | RAF Cranwell | 40 | | | | | |  |
Lawson C M | 22.8 | | | 46 | 2 | 0 | 0 | 0 | | |
| 1993 | | 23:05:30 | | Lawson C M & Lamb P K | Metropolitan Police | 58 | | | | | |  |
| 1995 | | 22:32:10 | | Lawson C M & Nash T | Metropolitan Police | 33 | | | | | |  |
Lawson Iain | 20.8 | | | 15 | 9 | 0 | 0 | 0 | | |
| 2013 | | 20:52:42 | | Lawson Iain & Wilson Charles | Army Canoe Union | 14 | | | | | |  |
| 2014 | | 20:45:25 | | Ives Tim & Lawson Iain | Army Canoe Union | 14 | | | | | |  |
| 2015 | | 21:15:25 | | Howson Peter & Lawson Iain | Army Canoe Union | 19 | | | | | |  |
| 2017 | | 21:16:41 | | Catto John & Lawson Iain | Royal Artillery & Royal Signals | 18 | | | | | |  |
| 2019 | | 20:50:49 | | Ives Tim & Lawson Iain | Army | 15 | | | | | Army |  |
| 2023 | | 19:42:40 | | Ives Tim & Lawson Iain | RE | 18 | | | | | Army,Services |  |
| 2026 | | 20:47:21 | | Ives Tim & Lawson Iain | Recc | 12 | | | | | |  |
| 2026 | | 20:47:21 | | Ives Tim & Lawson Iain | Recc | 12 | | | | | |  |
| 2026 | | 20:47:21 | | Ives Tim & Lawson Iain | Recc | 12 | | | | | |  |
Lawson Iain (Teddington) | 18.8 | | | 11 | 1 | 0 | 0 | 0 | | |
| 2022 | | 18:50:02 | | Ives Tim & Lawson Iain | Royal Engineers | 11 | | | | | Army |  |
Lawton C | 28.6 | | | 98 | 1 | 0 | 0 | 0 | | |