 | | | | Av Time | | | Place | Races | 1st | 2nd | 3rd | Trophies | |
Jeacock S W | 22.6 | | | 24 | 2 | 0 | 0 | 0 | | |
| 1978 | | 22:40:48 | | Jeacock S W & Noxon C F | Aylesbury | 27 | | | | | |  |
| 1981 | | 22:26:31 | | Jeacock S W & Beckett A J | Milton Keynes | 21 | | | | | |  |
Jeavons S C | 73.1 | | | 113 | 1 | 0 | 0 | 0 | | |
| 1994 | | 73:07:00 | | Jeavons S C & Waterhouse E C | University of Plymouth | 113 | | | | | |  |
Jeddere-Rsher K C | 29.9 | | | 98 | 1 | 0 | 0 | 0 | | |
| 1989 | | 29:52:23 | | Jeddere-Rsher K C & Lyddiatt D | Marlow | 98 | | | | | |  |
Jefferies G | 51.0 | | | 30 | 1 | 0 | 0 | 0 | | |
| 1974 | | 51:00:30 | | Moore D & Jefferies G | Melksham Rover Scouts | 30 | | | | | |  |
Jefferies S | 24.7 | | | 73 | 1 | 0 | 0 | 0 | | |
| 1986 | | 24:40:02 | | Pratt A & Jefferies S | Independent | 73 | | | | | |  |
Jeffery Lizzy | 24.3 | | | 25 | 3 | 0 | 0 | 0 | | |
| 2026 | | 24:17:00 | | Williams Ben & Jeffery Lizzy | Churchers | 25 | | | | | |  |
| 2026 | | 24:17:00 | | Williams Ben & Jeffery Lizzy | Churchers | 25 | | | | | |  |
| 2026 | | 24:17:00 | | Williams Ben & Jeffery Lizzy | Churchers | 25 | | | | | |  |
Jeffreson Graham | 22.7 | | | 28 | 1 | 0 | 0 | 0 | | |
| 2013 | | 22:43:37 | | Jeffreson Nigel & Jeffreson Graham | Southampton | 28 | | | | | |  |
Jeffreson Nigel | 24.0 | | | 43 | 2 | 0 | 0 | 0 | | |
| 2012 | | 25:17:08 | | Jeffreson Nigel & Murrell Jim | Southampton | 58 | | | | | |  |
| 2013 | | 22:43:37 | | Jeffreson Nigel & Jeffreson Graham | Southampton | 28 | | | | | |  |
Jeffries G J | 33.3 | | | 106 | 1 | 0 | 0 | 0 | | |
| 1986 | | 33:20:21 | | Jeffries G J & Hayward R E | Independent | 106 | | | | | |  |
Jeffs Simon | 26.8 | | | 92 | 1 | 0 | 0 | 0 | | |
| 2009 | | 26:47:24 | | Jeffs Simon & Gearing Robert | Marlow | 92 | | | | | |  |
Jelf Richard | 25.9 | | | 41 | 1 | 0 | 0 | 0 | | |
| 2008 | | 25:56:38 | | Baxter Michael & Jelf Richard | Richmond | 41 | | | | | |  |
Jenkin Dan | 25.1 | | | 39 | 1 | 0 | 0 | 0 | | |
| 2008 | | 25:08:56 | | Jenkin Dan & Murray Dave | TWC | 39 | | | | | |  |
Jenkins Anita | 23.6 | | | 50 | 1 | 0 | 0 | 0 | | |
| 2015 | | 23:36:28 | | Heath Roger & Jenkins Anita | Independent | 50 | | | | | |  |
Jenkins Carl | 34.3 | | | 72 | 1 | 0 | 0 | 0 | | |
| 2006 | C2 | 34:20:02 | | Jenkins Carl & Searight William | Independent | 72 | | | | | |  |
Jenkins D | 25.8 | | | 103 | 1 | 0 | 0 | 0 | | |
| 1988 | | 25:50:30 | | Atkinson N & Jenkins D | Princess Marina College | 103 | | | | | |  |
Jenkins G R | 23.5 | | | 59 | 1 | 0 | 0 | 0 | | |
| 1989 | | 23:28:31 | | Jenkins G R & Rogers J P R | Friends of Allonby . & Blackwater Valley | 59 | | | | | |  |
Jenkins Harry | 29.0 | | | 87 | 1 | 0 | 0 | 0 | | |
| 2016 | | 28:59:40 | | Jenkins Harry & Woodward Matt | Army Canoe Union | 87 | | | | | |  |
Jenkins Jay | 20.1 | | | 5 | 1 | 0 | 0 | 0 | | |
| 2012 | | 20:04:58 | | Lavarack Michael & Jenkins Jay | Richmond & Natal | 5 | | | | | |  |
Jenkins John | 57.2 | | | 4 | 1 | 0 | 0 | 0 | | |
| 1954 | | 57:10:00 | | Jenkins John & Gerraed Eric | County Tech Stafford | 4 | | | | | |  |
Jenkins Linda Karen | 50.7 | | | 125 | 2 | 0 | 0 | 0 | | |
| 1990 | | 74:20:42 | | Lewis Susan Elizabeth & Jenkins Linda Karen | Independent | 160 | | | | | |  |
| 1993 | | 26:59:45 | | Walkers R G & Jenkins Linda Karen | Independent | 89 | | | | | |  |
Jenkins N | 26.9 | | | 50 | 3 | 0 | 0 | 0 | | |
| 1979 | | 29:37:10 | | Gordon N & Jenkins N | Llantwit Major SLSC | 58 | | | | | |  |
| 1983 | | 27:53:38 | | Jenkins N & Rowlands D | Rhoose Surf Saving C. | 44 | | | | | |  |
| 1984 | | 23:16:26 | | Jenkins N & Rowlands D | Surf Life Saving C of GB | 47 | | | | | |  |
Jenkins P | 19.0 | | | 16 | 2 | 0 | 0 | 0 | | |
| 1993 | | 19:26:25 | | Jenkins P & Hayward I C | Lowestoft & District | 21 | | | | | |  |
| 1994 | | 18:30:32 | | Jenkins P & Hayward I C | Lowestoft & District | 11 | | | | | |  |
Jenner R | 35.7 | | | 77 | 1 | 0 | 0 | 0 | | |
| 1981 | | 35:43:09 | | Jenner R & Johnson P | Independent (Royal Oak) | 77 | | | | | |  |
Jennings N P | 27.5 | | | 89 | 2 | 0 | 0 | 0 | | |
| 1987 | | 27:27:28 | | Jennings N P & Farmer P D | Pangbourne Youth Centre | 122 | | | | | |  |
| 1997 | | 27:32:05 | | Jennings N P & Farmer P D | Pangbourne | 55 | | | | | |  |
Jennings P | 29.4 | | | 39 | 1 | 0 | 0 | 0 | | |
| 1976 | | 29:22:45 | | Brettle L & Jennings P | Calshot | 39 | | | | | |  |
Jennings S A | 37.0 | | | 103 | 1 | 0 | 0 | 0 | | |
| 1991 | | 37:02:38 | | Jennings S A & Fisher J P | North Wiltshire TA | 103 | | | | | |  |
Jennings Susan Margaret | 35.9 | | | 100 | 1 | 0 | 0 | 0 | | |
| 1991 | | 35:56:45 | | Jennings Susan Margaret & Russell K J | Stoke Hammond Racing | 100 | | | | | |  |
Jenson P A | 25.9 | | | 56 | 1 | 0 | 0 | 0 | | |
| 1991 | | 25:56:47 | | Archer N & Jenson P A | Richmond | 56 | | | | | |  |
Jesson Chris | 32.4 | | | 103 | 2 | 0 | 0 | 0 | | |
| 2017 | FB | 32:28:12 | | Adams Matt & Jesson Chris | RMKA | 105 | | | | | |  |
| 2019 | FB | 32:19:08 | | Adams Matt & Jesson Chris | Royal Marines | 100 | | | | | |  |
Jesson Chris (Teddington) | 25.4 | | | 42 | 1 | 0 | 0 | 0 | | |
| 2024 | FB | 25:21:10 | | Adams Matt & Jesson Chris | Rmka | 42 | | | | | |  |
Jewell P | 42.5 | | | 37 | 1 | 0 | 0 | 0 | | |
| 1962 | | 42:33:00 | | Burns P & Jewell P | Royal Signals | 37 | | | | | |  |
Jewson G | 25.9 | | | 101 | 2 | 0 | 0 | 0 | | |
| 1987 | | 27:48:29 | | Jewson G & Blackburn P | Independent | 125 | | | | | |  |
| 1988 | | 24:04:59 | | Jewson G & Blackburn P | Independent | 76 | | | | | |  |
Jeyes J | 22.2 | | | 39 | 2 | 0 | 0 | 0 | | |
| 1985 | | 22:31:13 | | Lowandowskyj I & Jeyes J | 8th Regiment RCT | 41 | | | | | |  |
| 1986 | | 21:50:45 | | Lewandowskyj I & Jeyes J | 8th Regiment RCT | 36 | | | | | |  |
Johansen Mark | 21.2 | | | 14 | 1 | 0 | 0 | 0 | | |
| 2002 | | 21:12:41 | | Damant Simon & Johansen Mark | Artists Rifles | 14 | | | | | |  |
John Barry | 26.5 | | | 51 | 1 | 0 | 0 | 0 | | |
| 2004 | | 26:28:35 | | Wilkens Simon & John Barry | Soar Valley | 51 | | | | | |  |
John Morris | 29.3 | | | 113 | 1 | 0 | 0 | 0 | | |
| 2009 | C2 | 29:18:17 | | McCue Ian & John Morris | GVP & 5th Carmarthen | 113 | | | | | |  |
John Robert | 29.7 | | | 115 | 1 | 0 | 0 | 0 | | |
| 2009 | | 29:42:52 | | John Robert & Hutchings Andrew | GORDANO SCOUTS | 115 | | | | | |  |
John S A | 26.1 | | | 50 | 1 | 0 | 0 | 0 | | |
| 1979 | | 26:03:08 | | Morley J P & John S A | 2nd Woodley Venture Scouts | 50 | | | | | |  |
Johncock S A | 24.7 | | | 71 | 1 | 0 | 0 | 0 | | |
| 1989 | | 24:43:27 | | Johncock S A & Tretease R J | Devon Fire and Rescue Service | 71 | | | | | |  |
Johncox G P | 25.0 | | | 47 | 1 | 0 | 0 | 0 | | |
| 1991 | | 25:01:56 | | Johncox G P & McNuff Susan | Royal | 47 | | | | | |  |
Johns D M | 35.3 | | | 103 | 1 | 0 | 0 | 0 | | |
| 1985 | | 35:19:03 | | Deeming S J & Johns D M | British Seamans Boys Home | 103 | | | | | |  |
Johns Robert | 21.5 | | | 26 | 1 | 0 | 0 | 0 | | |
| 2009 | | 21:27:02 | | Johns Robert & Stonestreet Andrew | Royal Engineers | 26 | | | | | |  |
Johnson-Ferguson J H | 37.9 | | | 135 | 1 | 0 | 0 | 0 | | |
| 1988 | | 37:54:45 | | Gunn M J S & Johnson-Ferguson J H | Independent & Royal | 135 | | | | | |  |
Johnson A | 59.2 | | | 94 | 1 | 0 | 0 | 0 | | |
| 1981 | | 59:10:56 | | Crawford A & Johnson A | 6 Fd. force Ordnance Coy. | 94 | | | | | |  |