 | | | | Av Time | | | Place | Races | 1st | 2nd | 3rd | Trophies | |
Cianchi Anne Elizabeth | 24.6 | | | 67 | 1 | 0 | 0 | 0 | | |
| 1990 | | 24:39:45 | | Cianchi P A & Cianchi Anne Elizabeth | Hereford | 67 | | | | | |  |
Cianchi C R | 21.2 | | | 26 | 1 | 0 | 0 | 0 | | |
| 1986 | | 21:13:41 | | Hyde J & Cianchi C R | Hereford | 26 | | | | | |  |
Cianchi P A | 23.5 | | | 52 | 2 | 0 | 0 | 0 | | |
| 1985 | | 22:15:13 | | Cianchi P A & Preece A J | Hereford | 36 | | | | | |  |
| 1990 | | 24:39:45 | | Cianchi P A & Cianchi Anne Elizabeth | Hereford | 67 | | | | | |  |
Cientanni Antonio | 24.3 | | | 52 | 2 | 0 | 0 | 0 | | |
| 2008 | | 23:59:36 | | Cientanni Antonio & Dodson Michael | Viking | 28 | | | | | |  |
| 2010 | | 24:34:14 | | Cientanni Antonio & Dodson Michael | Viking Kc | 75 | | | | | |  |
Clack G J | 24.0 | | | 22 | 1 | 0 | 0 | 0 | | |
| 1996 | | 23:57:35 | | Prendergast Tania & Clack G J | Woodmill | 22 | | | | | Mixed |  |
Claessens Richard | 29.1 | | | 63 | 1 | 0 | 0 | 0 | | |
| 2004 | | 29:05:18 | | Claessens Richard & Stratford Gary | Independent | 63 | | | | | |  |
Claridge Robert | 25.6 | | | 59 | 1 | 0 | 0 | 0 | | |
| 2007 | C2 | 25:34:00 | | Claridge Robert & Johnson Nicholas | Tonbridge | 59 | | | | | |  |
Clark Adrian | 25.2 | | | 57 | 4 | 0 | 0 | 0 | | |
| 2011 | | 26:00:47 | | Clark Adrian & Bott Mike | Addlestone | 58 | | | | | Veteran |  |
| 2013 | | 26:28:25 | | Clark Adrian & Bott Mike | Addlestone | 68 | | | | | Veteran |  |
| 2015 | | 24:32:13 | | Clark Adrian & Bott Mike | Addlestone | 61 | | | | | |  |
| 2016 | | 23:57:03 | | Clark Adrian & Whitefield Mark | Addlestone & Richmond | 42 | | | | | |  |
Clark Alan | 24.6 | | | 28 | 3 | 0 | 0 | 0 | | |
| 2026 | | 24:35:27 | | Smith Derek & Clark Alan | Elmbridge | 28 | | | | | |  |
| 2026 | | 24:35:27 | | Smith Derek & Clark Alan | Elmbridge | 28 | | | | | |  |
| 2026 | | 24:35:27 | | Smith Derek & Clark Alan | Elmbridge | 28 | | | | | |  |
Clark C | 52.7 | | | 140 | 1 | 0 | 0 | 0 | | |
| 1986 | | 52:42:55 | | Clark C & Dodd K | 2 Fd. Regt. R.A. | 140 | | | | | |  |
Clark Fergus | 25.4 | | | 53 | 1 | 0 | 0 | 0 | | |
| 2011 | | 25:26:48 | | Baker Timothy & Clark Fergus | Victoria Lake Club | 53 | | | | | |  |
Clark J P | 36.6 | | | 72 | 2 | 0 | 0 | 0 | | |
| 1996 | | 36:47:10 | | Clark J P & Tripp M | Devizes | 65 | | | | | |  |
| 1999 | | 36:20:01 | | Clark J P & Brigstock K | Devizes & Stonehenge & Pewsey | 78 | | | | | |  |
Clark Jeremy | 22.7 | | | 29 | 1 | 0 | 0 | 0 | | |
| 2007 | | 22:41:35 | | Catto John & Clark Jeremy | Tonbridge | 29 | | | | | |  |
Clark John | 28.4 | | | 61 | 1 | 0 | 0 | 0 | | |
| 2004 | | 28:25:19 | | Clark John & Gompels Nicholas | Independent | 61 | | | | | |  |
Clark Lenny | 22.5 | | | 27 | 2 | 0 | 0 | 0 | | |
| 2012 | | 22:31:41 | | Clark Lenny & Houghting Shane | Tonbridge & Wey | 21 | | | | | |  |
| 2015 | | 22:26:22 | | Clark Lenny & Houghting Shane | Tonbridge & Wey Kc | 32 | | | | | |  |
Clark Linda | 25.7 | | | 78 | 1 | 0 | 0 | 0 | | |
| 2009 | | 25:41:14 | | Clark Linda & Davies Sara | Royal & Rutland | 78 | | | | | |  |
Clark P A | 38.9 | | | 137 | 1 | 0 | 0 | 0 | | |
| 1988 | | 38:55:15 | | Clark P A & Egelstaff R A | Independent | 137 | | | | | |  |
Clark P J | 31.0 | | | 109 | 2 | 0 | 0 | 0 | | |
| 1986 | | 35:54:35 | | Clark P J & Swinnerton N J | Wellington | 112 | | | | | |  |
| 1987 | | 26:00:35 | | Clark P J & Thorne G N | Wellington | 105 | | | | | |  |
Clark Stewart | 28.0 | | | 76 | 1 | 0 | 0 | 0 | | |
| 2011 | C2 | 28:00:36 | | Clark Stewart & Avery John | Chelmsford | 76 | | | | | Special |  |
Clark T A | 22.3 | | | 15 | 1 | 0 | 0 | 0 | | |
| 1996 | | 22:19:25 | | Simmonds P P & Clark T A | RAF | 15 | | | | | RAF |  |
Clark T J | 23.4 | | | 56 | 1 | 0 | 0 | 0 | | |
| 1986 | | 23:21:20 | | Clark T J & Chappie P P | 1st Woodley Venture Scouts | 56 | | | | | |  |
Clark William | 23.4 | | | 54 | 1 | 0 | 0 | 0 | | |
| 2010 | | 23:24:45 | | Kemlo Robert & Clark William | Reading University & Reading | 54 | | | | | University |  |
Clarke A B | 24.0 | | | 55 | 1 | 0 | 0 | 0 | | |
| 1984 | | 24:02:49 | | Clarke A B & Arnold P A | Wodifals | 55 | | | | | |  |
Clarke A C | 31.2 | | | 8 | 1 | 0 | 0 | 0 | | |
| 1959 | | 31:14:30 | | Clarke A C & Bonner D E | RMA Sandhurst | 8 | | | | | |  |
Clarke Darren | 24.3 | | | 37 | 1 | 0 | 0 | 0 | | |
| 2002 | | 24:15:32 | | Adams Matt & Clarke Darren | Royal Marines | 37 | | | | | |  |
Clarke Harvey | 23.5 | | | 37 | 1 | 0 | 0 | 0 | | |
| 2016 | | 23:27:02 | | Clarke Harvey & Mcmichael Peter | Army Canoe Union | 37 | | | | | |  |
Clarke I | 23.3 | | | 55 | 1 | 0 | 0 | 0 | | |
| 1985 | | 23:19:05 | | Moldon T J & Clarke I | Stubbers | 55 | | | | | |  |
Clarke J P | 27.6 | | | 2 | 2 | 1 | 1 | 0 | | |
| 1955 | FB | 26:39:00 | | Howe G R & Clarke J P | Royal Marines | 2 | | | 1 | | Tyne |  |
| 1956 | | 28:32:00 | | Howe G R & Clarke J P | Royal Marines | 1 | | 1 | | | |  |
Clarke Joanna | 27.2 | | | 77 | 1 | 0 | 0 | 0 | | |
| 2016 | | 27:11:24 | | Egeland-Jensen Finn Adam & Clarke Joanna | Southampton | 77 | | | | | |  |
Clarke K J | 25.1 | | | 58 | 2 | 0 | 0 | 0 | | |
| 1990 | | 25:27:56 | | Clarke K J & Critchley D | Royal Military Col. of Science | 81 | | | | | |  |
| 1998 | | 24:45:22 | | Clarke K J & Hillsdon T C | Cricket | 35 | | | | | |  |
Clarke N R | 24.4 | | | 64 | 1 | 0 | 0 | 0 | | |
| 1990 | | 24:24:14 | | Clarke N R & Clarke Susan Mary | Basingstoke Canal | 64 | | | | | |  |
Clarke Nathan | 26.1 | | | 48 | 1 | 0 | 0 | 0 | | |
| 2006 | | 26:07:13 | | Lewis Gavin & Clarke Nathan | Cotswold Outdoor.com & Independent | 48 | | | | | |  |
Clarke P D | 24.4 | | | 81 | 1 | 0 | 0 | 0 | | |
| 1988 | | 24:21:42 | | Northway C P & Clarke P D | Bunon | 81 | | | | | |  |
Clarke Peter | 22.6 | | | 31 | 3 | 0 | 0 | 0 | | |
| 2017 | | 25:14:13 | | Colby Daniel & Clarke Peter | Devizes | 61 | | | | | |  |
| 2023 | | 19:28:00 | | Clarke Peter & David Alexander | Devizes | 14 | | | | | |  |
| 2025 | | 23:12:45 | | Clarke Peter & Robert Iain | Devizes & Sutton Bingham and District | 18 | | | | | |  |
Clarke Peter 3 | 34.0 | | | 100 | 1 | 0 | 0 | 0 | | |
| 2012 | | 33:57:56 | | Hinwood James & Clarke Peter 3 | Trojan Squadron | 100 | | | | | Reserve |  |
Clarke Peter (Teddington) | 18.5 | | | 14 | 2 | 0 | 0 | 0 | | |
| 2022 | | 18:51:08 | | Clarke Peter & Deveruex Michael | Royal Marines Kayak Association | 12 | | | | | |  |
| 2024 | | 18:03:48 | | Clarke Peter & Fooks Juliet | Devizes | 16 | | | | | |  |
Clarke R J | 22.1 | | | 21 | 1 | 0 | 0 | 0 | | |
| 1975 | | 22:06:28 | | Barge M & Clarke R J | Royal Navy | 21 | | | | | |  |
Clarke Richard | 28.1 | | | 87 | 1 | 0 | 0 | 0 | | |
| 2013 | | 28:04:21 | | Dunne Lisa & Clarke Richard | Army Canoe Union | 87 | | | | | |  |
Clarke Sam | 22.9 | | | 34 | 2 | 0 | 0 | 0 | | |
| 2014 | | 22:22:08 | | Carpenter Paul & Clarke Sam | Hereford | 32 | | | | | |  |
| 2017 | | 23:23:28 | | Clarke Sam & Carpenter Paul | Hereford | 35 | | | | | |  |
Clarke Susan Mary | 24.4 | | | 64 | 1 | 0 | 0 | 0 | | |
| 1990 | | 24:24:14 | | Clarke N R & Clarke Susan Mary | Basingstoke Canal | 64 | | | | | |  |
Clay Edward | 22.6 | | | 17 | 1 | 0 | 0 | 0 | | |
| 2008 | | 22:39:38 | | Clay Edward & Willans Adam | Falcon | 17 | | | | | |  |
Clayden S | 21.6 | | | 29 | 1 | 0 | 0 | 0 | | |
| 1985 | | 21:37:47 | | Clayden S & Webb D | Albany Park | 29 | | | | | |  |