 | | | | Av Time | | | Place | Races | 1st | 2nd | 3rd | Trophies | |
Sumner Philip | 28.6 | | | 32 | 1 | 0 | 0 | 0 | | |
| 2025 | | 28:33:26 | | Sumner Philip & Hill Chris | Elmbridge & Wey | 32 | | | | | |  |
Supple Jamie | 27.1 | | | 78 | 1 | 0 | 0 | 0 | | |
| 2013 | | 27:03:08 | | Supple Jamie & Casey James | Independent | 78 | | | | | |  |
Sutherland Bob | 24.2 | | | 35 | 1 | 0 | 0 | 0 | | |
| 2005 | | 24:11:47 | | Sutherland Bob & Deaves Martin | Wokingham | 35 | | | | | |  |
Sutherland Dougie | 21.1 | | | 16 | 1 | 0 | 0 | 0 | | |
| 2014 | | 21:08:07 | | Sutherland Dougie & Willcock Rob | Longridge | 16 | | | | | |  |
Sutherland James | 25.1 | | | 72 | 1 | 0 | 0 | 0 | | |
| 2009 | | 25:07:46 | | Sutherland James & Harrison Mike | Reading | 72 | | | | | |  |
Sutherland Robert | 32.6 | | | 86 | 2 | 0 | 0 | 0 | | |
| 2007 | C2 | 35:56:21 | | Sutherland Robert & Whitaker William | Pangbourne | 83 | | | | | |  |
| 2012 | C2 | 29:14:00 | | Sutherland Robert & McAllister Elizabeth | Wokingham & Independent | 88 | | | | | |  |
Sutton-Pratt M P | 32.0 | | | 28 | 6 | 0 | 0 | 0 | | |
| 1960 | | 51:31:00 | | Sutton-Pratt M P & Priestly J | 5 Tg Bn RASC | 34 | | | | | |  |
| 1964 | | 27:56:06 | | Dearling P & Sutton-Pratt M P | Oatlands | 11 | | | | | |  |
| 1967 | | 25:42:00 | | Sutton-Pratt M P & Dearling P | Oatlands | 23 | | | | | Home Built |  |
| 1970 | | 25:46:42 | | Sutton-Pratt M P & Dearling P | Woking Adventure Club | 21 | | | | | |  |
| 1971 | | 37:22:08 | | Dearling P & Sutton-Pratt M P | Woking Adventure Club | 53 | | | | | |  |
| 1972 | | 23:46:45 | | Sutton-Pratt M P & Dearling P | Woking Adventure Club | 25 | | | | | |  |
Sutton D | 25.7 | | | 30 | 2 | 0 | 0 | 0 | | |
| 1976 | | 28:32:25 | | Sutton D & Owen P | Depot Regt RA | 28 | | | | | |  |
| 1979 | | 22:57:37 | | Sutton D & Rouse R | 29 Commando RA | 32 | | | | | |  |
Sutton J | 35.5 | | | 32 | 1 | 0 | 0 | 0 | | |
| 1963 | | 35:30:31 | | Carson R & Sutton J | RAF Swinderby | 32 | | | | | |  |
Sutton N J | 22.3 | | | 31 | 1 | 0 | 0 | 0 | | |
| 1990 | | 22:20:05 | | Wiltshire P D & Sutton N J | Metropolitan Police | 31 | | | | | |  |
Svane Pernille | 21.5 | | | 27 | 1 | 0 | 0 | 0 | | |
| 2009 | | 21:27:53 | | Kristensen Martin & Svane Pernille | Strommen Denmark | 27 | | | | | |  |
Swadling G | 18.3 | | | 5 | 1 | 0 | 0 | 0 | | |
| 1986 | | 18:15:02 | | Carter Steve & Swadling G | Windsor | 5 | | | | | |  |
Swain P | 23.3 | | | 61 | 1 | 0 | 0 | 0 | | |
| 1993 | | 23:20:00 | | Leddy J & Swain P | Leaside YMYC | 61 | | | | | |  |
Swales W | 28.2 | | | 12 | 1 | 0 | 0 | 0 | | |
| 1964 | FB | 28:12:17 | | Meston J & Swales W | Royal Marines Forces Volunteer Reserve | 12 | | | | | |  |
Swales W H | 43.1 | | | 28 | 1 | 0 | 0 | 0 | | |
| 1974 | | 43:09:40 | | Swales W H & Powell R | 4 Para | 28 | | | | | |  |
Swan Tony | 25.9 | | | 69 | 1 | 0 | 0 | 0 | | |
| 2016 | | 25:54:01 | | Ayris Luke & Swan Tony | RMKA | 69 | | | | | |  |
Swanepoel Chris | 26.7 | | | 63 | 1 | 0 | 0 | 0 | | |
| 2011 | | 26:42:08 | | White Rob & Swanepoel Chris | Independent & West Cumbria | 63 | | | | | |  |
Swannick Sam | 22.7 | | | 37 | 4 | 0 | 0 | 0 | | |
| 2009 | | 26:05:13 | | Lavender Guy & Swannick Sam | Parachute Regiment | 85 | | | | | |  |
| 2010 | | 19:18:58 | | Gargan Frank & Swannick Sam | 2 Para | 6 | | | | | Army,Services |  |
| 2012 | | 22:17:01 | | Gargan Frank & Swannick Sam | Parachute Regiment | 18 | | | | | |  |
| 2015 | | 23:17:08 | | Gargan Frank & Swannick Sam | Parachute Regiment | 40 | | | | | |  |
Sweatman G R | 49.5 | | | 150 | 2 | 0 | 0 | 0 | | |
| 1987 | | 50:36:48 | | Marlow G & Sweatman G R | North Avon | 166 | | | | | |  |
| 1989 | | 48:28:07 | | Thorne R M & Sweatman G R | North Avon | 133 | | | | | |  |
Sweatman P | 36.1 | | | 109 | 1 | 0 | 0 | 0 | | |
| 1985 | | 36:04:15 | | Hatherill K & Sweatman P | North Avon | 109 | | | | | |  |
Swietochowski A S | 23.6 | | | 62 | 5 | 0 | 0 | 0 | | |
| 1986 | | 25:28:32 | | Swietochowski A S & Waller D M | Independent | 79 | | | | | |  |
| 1987 | | 24:11:40 | | Swietochowski A S & Cook M D | Perivale YC Canoe Group | 83 | | | | | |  |
| 1988 | | 23:52:45 | | Swietochowski A S & Wilson S P | Ealing | 75 | | | | | |  |
| 1989 | | 21:19:56 | | Swietochowski A S & Kelly D J | Ealing | 32 | | | | | |  |
| 1990 | | 22:56:47 | | Swietochowski A S & Wilson S P | Ealing | 42 | | | | | |  |
Swindell R | 21.6 | | | 2 | 1 | 0 | 1 | 0 | | |
| 1969 | | 21:35:49 | | Alan-Williams A K & Swindell R | Royal Marines | 2 | | | 1 | | |  |
Swinnerton N J | 35.9 | | | 112 | 1 | 0 | 0 | 0 | | |
| 1986 | | 35:54:35 | | Clark P J & Swinnerton N J | Wellington | 112 | | | | | |  |
Swinyard Lorna | 26.3 | | | 72 | 1 | 0 | 0 | 0 | | |
| 2016 | | 26:20:12 | | Lay Rebecca & Swinyard Lorna | Army Canoe Union | 72 | | | | | |  |
Sycha A B | 27.8 | | | 66 | 2 | 0 | 0 | 0 | | |
| 1992 | | 34:29:20 | | Sycha A B & Corfield M | Reading and Leighton Park | 105 | | | | | |  |
| 1995 | | 21:10:45 | | Sycha A B & Cole N | Wokingham Scouts | 27 | | | | | Scouts |  |
Sykes Ben | 32.0 | | | 104 | 1 | 0 | 0 | 0 | | |
| 2017 | FB | 32:03:21 | | Sykes Ben & Walters David | RMKA & Portsmouth & District | 104 | | | | | Special |  |
Sykes D C | 23.5 | | | 68 | 1 | 0 | 0 | 0 | | |
| 1988 | | 23:31:45 | | Sykes D C & Streatfield-James F C | Oxford University O.T.C. | 68 | | | | | |  |
Sykes Jason | 21.1 | | | 19 | 2 | 0 | 0 | 0 | | |
| 1994 | | 21:15:34 | | Sykes Jason & Lockyer D R | Royal Engineers | 24 | | | | | |  |
| 1999 | | 20:56:59 | | Sykes Jason & Bawden P A | Royal Engineers | 13 | | | | | |  |
Sykes Paul | 27.3 | | | 100 | 1 | 0 | 0 | 0 | | |
| 2014 | | 27:20:04 | | Sykes Paul & Woddy Simon | Devizes | 100 | | | | | |  |
Sylvan Chris | 22.1 | | | 30 | 1 | 0 | 0 | 0 | | |
| 2015 | | 22:06:34 | | Sylvan Chris & Smith Frazer | Royal Navy & Independent | 30 | | | | | |  |
Syme A B | 22.3 | | | 42 | 1 | 0 | 0 | 0 | | |
| 1989 | | 22:15:49 | | Syme A B & Drinkall D | Royal Military Col. of Science | 42 | | | | | |  |
Symington C W | 21.9 | | | 39 | 1 | 0 | 0 | 0 | | |
| 1988 | | 21:51:15 | | Symington C W & Bird P | Royal Marines | 39 | | | | | |  |
Symonds Chris | 23.4 | | | 19 | 1 | 0 | 0 | 0 | | |
| 2025 | | 23:25:46 | | Symonds Chris & Edwards Ashley | Independent | 19 | | | | | |  |
Symonds Chris (Teddington) | 18.3 | | | 12 | 2 | 0 | 0 | 0 | | |
| 2022 | | 19:08:40 | | Symonds Chris & Edwards Ashley | Independent | 14 | | | | | |  |
| 2024 | | 17:26:05 | | Symonds Chris & Edwards Ashley | Independent | 10 | | | | | |  |
Symons M W | 27.5 | | | 93 | 1 | 0 | 0 | 0 | | |
| 1986 | | 27:28:26 | | Brown S J & Symons M W | Independent | 93 | | | | | |  |
Symons R | 28.6 | | | 9 | 1 | 0 | 0 | 0 | | |
| 1962 | | 28:33:00 | | Hough J & Symons R | RAF Swinderby | 9 | | | | | |  |
Syms Georgie (Teddington) | 21.1 | | | 33 | 1 | 0 | 0 | 0 | | |
| 2024 | | 21:05:10 | | Williams Sara & Syms Georgie | Wey Kc | 33 | | | | | Special |  |
Syrad D H | 23.5 | | | 26 | 1 | 0 | 0 | 0 | | |
| 1977 | | 23:27:33 | | Syrad S L & Syrad D H | Royal Marines | 26 | | | | | |  |
Syrad S L | 23.5 | | | 26 | 1 | 0 | 0 | 0 | | |
| 1977 | | 23:27:33 | | Syrad S L & Syrad D H | Royal Marines | 26 | | | | | |  |
Syrad Stewart | 25.7 | | | 1 | 3 | 3 | 0 | 0 | | |
| 1954 | | 28:13:00 | | Mitchell David & Syrad Stewart | Royal Marines | 1 | | 1 | | | |  |
| 1955 | | 25:32:00 | | Mitchell David & Syrad Stewart | Royal Marines | 1 | | 1 | | | |  |
| 1959 | | 23:17:15 | | Syrad Stewart & Shenton T | Royal Marines | 1 | | 1 | | | |  |