 | | | | Av Time | | | Place | Races | 1st | 2nd | 3rd | Trophies | |
Jackson S N | 27.6 | | | 24 | 1 | 0 | 0 | 0 | | |
| 1976 | | 27:37:08 | | Smith J G & Jackson S N | 8 Sig.Regt | 24 | | | | | |  |
Jackson Sarah | 26.6 | | | 56 | 1 | 0 | 0 | 0 | | |
| 1999 | | 26:39:10 | | Kemp Charlie & Jackson Sarah | Royal | 56 | | | | | |  |
Jackson Simon | 27.4 | | | 91 | 1 | 0 | 0 | 0 | | |
| 2010 | | 27:25:43 | | Jackson Simon & Jose Gary | Independent | 91 | | | | | |  |
Jackson W D | 36.4 | | | 19 | 1 | 0 | 0 | 0 | | |
| 1960 | | 36:22:00 | | Reynolds O & Jackson W D | 4th Wilts (TA) | 19 | | | | | |  |
Jacobs G | 18.9 | | | 11 | 1 | 0 | 0 | 0 | | |
| 1995 | | 18:52:25 | | Leysen P & Jacobs G | Kastelse Belgium | 11 | | | | | Overseas |  |
Jacobs Sarah | 69.6 | | | 65 | 1 | 0 | 0 | 0 | | |
| 1998 | | 69:37:21 | | Blake Lorraine & Jacobs Sarah | Birmingham University | 65 | | | | | |  |
Jaeger P G De | 25.2 | | | 80 | 2 | 0 | 0 | 0 | | |
| 1986 | | 26:44:57 | | Scarisbrick E & Jaeger P G De | Stonyhurst College | 89 | | | | | |  |
| 1988 | | 23:43:30 | | Scarisbrick E & Jaeger P G De | Independent | 71 | | | | | |  |
Jagger D | 34.9 | | | 51 | 1 | 0 | 0 | 0 | | |
| 1975 | | 34:53:51 | | Jagger D & Mullings R J | 1st Bn Wessex Regt | 51 | | | | | |  |
Jagger Roger | 25.3 | | | 56 | 8 | 0 | 0 | 0 | | |
| 1989 | | 25:08:13 | | Dobbie M M & Jagger Roger | Royal Electrical & Mechanical Engineers | 75 | | | | | |  |
| 1990 | | 24:50:07 | | Jagger Roger & Turtle G | Royal Electrical & Mechanical Engineers | 70 | | | | | |  |
| 1991 | | 25:46:29 | | Jagger Roger & Fuller Jim | Royal Electrical & Mechanical Engineers | 54 | | | | | |  |
| 1992 | | 22:09:10 | | Jagger Roger & Owen Roger | Royal Electrical & Mechanical Engineers | 44 | | | | | |  |
| 2004 | C2 | 27:55:12 | | Jagger Roger & Owen Roger | Royal Electrical & Mechanical Engineers | 60 | | | | | |  |
| 2005 | | 25:49:32 | | Croucher Andrew & Jagger Roger | Royal Electrical & Mechanical Engineers | 44 | | | | | |  |
| 2007 | C2 | 26:42:28 | | Owen Roger & Jagger Roger | Royal Electrical & Mechanical Engineers | 67 | | | | | Veteran |  |
| 2008 | | 24:11:44 | | Jagger Roger & Manning Greg | Integrate Paddling | 30 | | | | | Century |  |
Jaggs W J (Bill) | 21.6 | | | 25 | 3 | 0 | 0 | 0 | | |
| 2009 | | 21:30:12 | | Dore Graham & Jaggs W J (Bill) | Poole Harbour | 28 | | | | | Century |  |
| 2010 | | 19:50:30 | | Dore Graham & Jaggs W J (Bill) | Poole Harbour | 13 | | | | | Century |  |
| 2017 | | 23:23:13 | | Lane Hugh & Jaggs W J (Bill) | Poole Harbour | 34 | | | | | |  |
Jaggs W J (Bill) (Teddington) | 19.2 | | | 15 | 1 | 0 | 0 | 0 | | |
| 2022 | | 19:11:08 | | Jaggs W J (Bill) & Worth Andrew | Poole Harbour & Exeter | 15 | | | | | |  |
James A D | 21.6 | | | 40 | 1 | 0 | 0 | 0 | | |
| 1993 | | 21:34:55 | | Musson T J & James A D | River Runners | 40 | | | | | |  |
James A T | 25.2 | | | 97 | 1 | 0 | 0 | 0 | | |
| 1987 | | 25:14:58 | | James A T & Foulds W | Llantwit Major SLSC | 97 | | | | | |  |
James Claire | 27.9 | | | 90 | 1 | 0 | 0 | 0 | | |
| 2019 | | 27:56:50 | | James Claire & James Edward | Army | 90 | | | | | |  |
James D | 50.7 | | | 73 | 1 | 0 | 0 | 0 | | |
| 1983 | | 50:40:06 | | Oates A J & James D | 10th Wakefield Scouts | 73 | | | | | |  |
James D J | 25.6 | | | 20 | 4 | 0 | 0 | 0 | | |
| 1971 | | 34:53:23 | | Taylor J & James D J | Newham | 49 | | | | | |  |
| 1974 | | 25:47:16 | | Price R & James D J | Newham | 11 | | | | | |  |
| 1975 | | 20:13:30 | | Price R & James D J | Newham | 9 | | | | | |  |
| 1981 | | 21:38:27 | | Wrafter P J & James D J | Newham | 12 | | | | | |  |
James Edward | 27.6 | | | 84 | 2 | 0 | 0 | 0 | | |
| 2016 | | 27:14:32 | | Allen Stuart & James Edward | Army Canoe Union | 78 | | | | | |  |
| 2019 | | 27:56:50 | | James Claire & James Edward | Army | 90 | | | | | |  |
James G L | 29.4 | | | 70 | 1 | 0 | 0 | 0 | | |
| 1991 | C2 | 29:26:15 | | James G L & Blakeborough Margaret | Peninsula | 70 | | | | | |  |
James Ivor | 27.7 | | | 103 | 1 | 0 | 0 | 0 | | |
| 2009 | | 27:41:32 | | James Ivor & Twitchen Michael | Stafford Canoe And Watersports Club | 103 | | | | | |  |
James L | 50.7 | | | 75 | 1 | 0 | 0 | 0 | | |
| 1983 | | 50:45:07 | | James L & Jones M | The Rose and Crown | 75 | | | | | |  |
James M A | 29.7 | | | 68 | 1 | 0 | 0 | 0 | | |
| 1997 | FB | 29:40:48 | | Adlam D A & James M A | Artists Rifles | 68 | | | | | |  |
James M I | 28.8 | | | 75 | 2 | 0 | 0 | 0 | | |
| 1986 | | 32:29:10 | | Woolley M S & James M I | Lancaster University | 104 | | | | | |  |
| 1999 | | 25:07:26 | | James M I & Watt S J | Basingstoke Canal & Manx Paddlesport | 46 | | | | | |  |
James Mark | 31.4 | | | 106 | 1 | 0 | 0 | 0 | | |
| 2015 | | 31:25:03 | | James Mark & Smith Richard | Viking Kc | 106 | | | | | |  |
James P | 26.0 | | | 28 | 4 | 0 | 0 | 1 | | |
| 1966 | | 27:14:30 | | James P & Jones R H | RMA Sandhurst | 13 | | | | | |  |
| 1967 | | 22:40:00 | | James P & Gullan H | RMA Sandhurst | 10 | | | | | |  |
| 1970 | | 20:18:40 | | Vesey M I & James P | Newham | 3 | | | | 1 | Civilian |  |
| 1991 | | 33:47:32 | | Smith D & James P | Sea Cadets | 87 | | | | | |  |
James P C | 38.1 | | | 15 | 1 | 0 | 0 | 0 | | |
| 1959 | | 38:05:50 | | Hodgkinson K J & James P C | Royal Marines | 15 | | | | | |  |
James Peter | 21.7 | | | 16 | 2 | 0 | 0 | 0 | | |
| 2002 | | 21:42:51 | | James Peter & Norona Dave | Bristol & Deep Cove | 16 | | | | | |  |
| 2004 | | 21:38:19 | | James Peter & Taylor Jules | Bristol | 15 | | | | | |  |
James R | 38.0 | | | 36 | 1 | 0 | 0 | 0 | | |
| 1964 | | 38:02:12 | | James R & Shepherd B | 8th Ruislip Sea Scouts | 36 | | | | | |  |
James Robert | 30.0 | | | 95 | 2 | 0 | 0 | 0 | | |
| 2016 | FB | 30:08:05 | | Ellis James & James Robert | Artists Rifles | 89 | | | | | |  |
| 2017 | FB | 29:48:41 | | James Robert & Lynch Rory | Artists Rifles | 101 | | | | | |  |
James Sean | 33.0 | | | 97 | 1 | 0 | 0 | 0 | | |
| 2012 | | 33:03:34 | | Payne Mark & James Sean | Independent | 97 | | | | | |  |
James W R | 28.5 | | | 67 | 1 | 0 | 0 | 0 | | |
| 1991 | C2 | 28:32:02 | | Neate R G & James W R | Independent | 67 | | | | | |  |
Jameson Mark | 25.2 | | | 57 | 1 | 0 | 0 | 0 | | |
| 2012 | | 25:10:46 | | Jameson Robert & Jameson Mark | Avon and Somerset Constabulary & Royal Navy Kayak Association | 57 | | | | | |  |
Jameson Robert | 25.2 | | | 57 | 1 | 0 | 0 | 0 | | |
| 2012 | | 25:10:46 | | Jameson Robert & Jameson Mark | Avon and Somerset Constabulary & Royal Navy Kayak Association | 57 | | | | | |  |
Janczak B R | 39.5 | | | 69 | 1 | 0 | 0 | 0 | | |
| 1983 | | 39:32:00 | | Lewin M A & Janczak B R | RNA | 69 | | | | | |  |
Janssen M | 47.8 | | | 49 | 1 | 0 | 0 | 0 | | |
| 1970 | | 47:50:30 | | Janssen M & Nobilio P | Para-Commando Belgium | 49 | | | | | |  |
Jardine G | 21.0 | | | 14 | 3 | 0 | 0 | 0 | | |
| 1981 | | 20:12:11 | | Oliver P A & Jardine G | Royal Engineers | 8 | | | | | |  |
| 1983 | | 23:24:36 | | Smith S & Jardine G | Royal Engineers | 21 | | | | | |  |
| 1987 | | 19:17:30 | | Bird A & Jardine G | Royal Engineers | 13 | | | | | Army |  |
Jardine Matthew | 23.5 | | | 24 | 3 | 0 | 0 | 0 | | |
| 2026 | | 23:28:58 | | Smith Harry & Jardine Matthew | Independent | 24 | | | | | |  |
| 2026 | | 23:28:58 | | Smith Harry & Jardine Matthew | Independent | 24 | | | | | |  |
| 2026 | | 23:28:58 | | Smith Harry & Jardine Matthew | Independent | 24 | | | | | |  |
Jarratt Connor | 21.0 | | | 11 | 1 | 0 | 0 | 0 | | |
| 2016 | | 20:58:02 | | Jarratt Connor & Amies Jay | Army Canoe Union | 11 | | | | | Army |  |
Jarratt P R | 35.8 | | | 49 | 1 | 0 | 0 | 0 | | |
| 1972 | | 35:50:15 | | Jarratt P R & Williams | Sheffield | 49 | | | | | |  |