 | | | | Av Time | | | Place | Races | 1st | 2nd | 3rd | Trophies | |
McCabe R | 34.5 | | | 45 | 1 | 0 | 0 | 0 | | |
| 1971 | | 34:27:53 | | Curry P & McCabe R | 4 Para | 45 | | | | | |  |
McCall Robert | 26.9 | | | 62 | 5 | 0 | 0 | 0 | | |
| 1997 | | 35:36:12 | | McCall Robert & Greenin M J | Independent | 84 | | | | | |  |
| 2010 | | 24:20:54 | | Mccall Robert & Harrison Richard | Soar & Independent | 72 | | | | | |  |
| 2013 | | 24:55:20 | | Hall-Mcair Robert & Mccall Robert | Independent | 50 | | | | | |  |
| 2015 | | 26:00:32 | | Mccall Robert & Charnell Gary | Hinckley & Independent | 82 | | | | | |  |
| 2025 | | 23:48:37 | | McCall Robert & Charnell Gary | Hinckley & Independent | 20 | | | | | |  |
Mccallion S | 36.7 | | | 80 | 1 | 0 | 0 | 0 | | |
| 1999 | | 36:44:29 | | Mccallion S & Willis S | Royal Military Col. of Science | 80 | | | | | |  |
McCann Edward | 27.4 | | | 99 | 1 | 0 | 0 | 0 | | |
| 2009 | | 27:21:11 | | McCann Edward & Griffiths Richard | RMA Sandhurst | 99 | | | | | |  |
McCarrick P | 58.5 | | | 146 | 1 | 0 | 0 | 0 | | |
| 1986 | | 58:33:55 | | Willis J & McCarrick P | Independent | 146 | | | | | |  |
McCarroll Stuart | 25.5 | | | 45 | 2 | 0 | 0 | 0 | | |
| 2007 | | 30:36:18 | | Dabney Owen & McCarroll Stuart | Falcon | 77 | | | | | |  |
| 2009 | | 20:28:50 | | McCarroll Stuart & Dabney Owen | Falcon | 13 | | | | | |  |
McCarthy D | 28.0 | | | 18 | 1 | 0 | 0 | 0 | | |
| 1961 | | 27:58:00 | | McCarthy D & Gibbins G | 3 Para | 18 | | | | | |  |
McCarthy T | 24.2 | | | 52 | 11 | 0 | 0 | 0 | | |
| 1987 | | 28:32:28 | | Richards E W J & McCarthy T | Gwendraeth Valley Paddlers | 136 | | | | | |  |
| 1988 | | 23:00:59 | | Richards E W J & McCarthy T | Gwendraeth Valley Paddlers | 59 | | | | | |  |
| 1989 | | 33:14:39 | | Berry C & McCarthy T | Teifi Valley Racing | 105 | | | | | |  |
| 1990 | | 21:49:56 | | McCarthy T & Rees M | Cambrian & North Yorks Police | 27 | | | | | |  |
| 1992 | | 23:37:35 | | Davies G & McCarthy T | Welsh Canoeing Association | 56 | | | | | |  |
| 1993 | | 21:24:15 | | Rees M & McCarthy T | Kingfisher | 39 | | | | | |  |
| 1994 | | 19:43:40 | | Tatam C J & McCarthy T | Kingfisher | 18 | | | | | |  |
| 1995 | | 22:05:30 | | Price J & McCarthy T | Kingfisher | 31 | | | | | |  |
| 1996 | | 24:49:20 | | Browning C & McCarthy T | Rosie & Jims | 28 | | | | | |  |
| 1997 | | 24:10:51 | | Semple M & McCarthy T | Islamabad & Rosie & Jims | 34 | | | | | |  |
| 1999 | | 24:12:43 | | McCarthy T & Harris Peter | Glamorgan & Blackwater Valley | 38 | | | | | |  |
McClean J | 30.6 | | | 22 | 1 | 0 | 0 | 0 | | |
| 1961 | | 30:34:00 | | McClean J & Blyth C | 3 Para | 22 | | | | | |  |
McClelland R | 39.4 | | | 39 | 1 | 0 | 0 | 0 | | |
| 1963 | | 39:23:26 | | McClelland R & Debham J | RAF Swinderby | 39 | | | | | |  |
Mccloud Simon | 23.5 | | | 43 | 2 | 0 | 0 | 0 | | |
| 2015 | | 24:47:27 | | Mccloud Simon & Brazier Alex | Artists Rifles | 64 | | | | | Reserve |  |
| 2016 | | 22:08:18 | | Simpson Edward & Mccloud Simon | Artists Rifles | 21 | | | | | Reserve |  |
McClue M J | 22.2 | | | 22 | 1 | 0 | 0 | 0 | | |
| 1991 | | 22:11:01 | | Phillips M I & McClue M J | Kingston Polytechnic | 22 | | | | | |  |
Mcclure Michael | 23.9 | | | 59 | 1 | 0 | 0 | 0 | | |
| 2010 | | 23:51:40 | | Mcclure Michael & Hallissey Oisin | Independent | 59 | | | | | |  |
Mcclure Roger | 23.9 | | | 41 | 1 | 0 | 0 | 0 | | |
| 2016 | C2 | 23:53:58 | | Boland Ken & Mcclure Roger | Kilkenny Aqua | 41 | | | | | European |  |
Mccluskey Steven | 25.9 | | | 63 | 1 | 0 | 0 | 0 | | |
| 2013 | | 25:55:19 | | Mannering David Robert & Mccluskey Steven | Pangbourne | 63 | | | | | |  |
McCourt Jonpaul | 23.8 | | | 44 | 1 | 0 | 0 | 0 | | |
| 2014 | | 23:45:46 | | Clements Raymond & McCourt Jonpaul | Devizes | 44 | | | | | |  |
McCue Ian | 29.3 | | | 113 | 1 | 0 | 0 | 0 | | |
| 2009 | C2 | 29:18:17 | | McCue Ian & John Morris | GVP & 5th Carmarthen | 113 | | | | | |  |
McDaid Jamie | 24.6 | | | 35 | 1 | 0 | 0 | 0 | | |
| 2006 | | 24:39:50 | | Landers David & McDaid Jamie | Chelmsford | 35 | | | | | |  |
McDiarmid N | 27.0 | | | 103 | 1 | 0 | 0 | 0 | | |
| 1990 | | 27:01:18 | | McDiarmid N & Baldwin A | 2nd Royal Green Jackets | 103 | | | | | |  |
McDonagh Andrew | 22.1 | | | 18 | 1 | 0 | 0 | 0 | | |
| 2002 | | 22:09:18 | | Deere Jeremy & McDonagh Andrew | Independent & Glamorgan | 18 | | | | | |  |
McDonald A | 35.9 | | | 114 | 1 | 0 | 0 | 0 | | |
| 1989 | | 35:55:56 | | McDonald A & Bird E G | Poole Harbour | 114 | | | | | |  |
McDonald A J | 62.7 | | | 113 | 1 | 0 | 0 | 0 | | |
| 1997 | | 62:41:03 | | Miller N A & McDonald A J | Seae | 113 | | | | | |  |
McDonoVon D I | 27.5 | | | 107 | 1 | 0 | 0 | 0 | | |
| 1990 | | 27:28:03 | | McDonoVon D I & Bailey P | Royal Marines Reserve - London | 107 | | | | | |  |
Mcdowell Kat | 24.0 | | | 44 | 1 | 0 | 0 | 0 | | |
| 2017 | C2 | 23:58:48 | | Hornsby Alistair & Mcdowell Kat | Duddon | 44 | | | | | |  |
McDowell Kathryn | 25.6 | | | 72 | 1 | 0 | 0 | 0 | | |
| 2014 | C2 | 25:33:09 | | Hornsby Alistair & McDowell Kathryn | West Cumbria | 72 | | | | | |  |
McEloy Richard | 21.7 | | | 15 | 1 | 0 | 0 | 0 | | |
| 2006 | | 21:41:45 | | Cowper Freddie & McEloy Richard | Artists Rifles | 15 | | | | | Reserve |  |
McEvoy A | 27.3 | | | 15 | 1 | 0 | 0 | 0 | | |
| 1963 | | 27:19:51 | | Ridley R & McEvoy A | RAF Oakington | 15 | | | | | |  |
McFarlane P | 24.9 | | | 71 | 1 | 0 | 0 | 0 | | |
| 1985 | | 24:51:35 | | Dawson N & McFarlane P | Staffs Fire Brigade | 71 | | | | | |  |
McGaham A | 37.5 | | | 40 | 1 | 0 | 0 | 0 | | |
| 1973 | | 37:29:47 | | McGaham A & Paterson J A | Harrow Scouts & Wealdstone Scouts | 40 | | | | | |  |
McGaughey A | 29.6 | | | 17 | 1 | 0 | 0 | 0 | | |
| 1964 | | 29:39:45 | | McGaughey A & Robertson C | Royal Marines Eastney | 17 | | | | | |  |
McGee Kelly | 18.6 | | | 3 | 1 | 0 | 0 | 1 | | |
| 2006 | | 18:36:47 | | Beazley Daniel & McGee Kelly | Leaside | 3 | | | | 1 | Mixed |  |
McGichen Neil | 21.9 | | | 20 | 1 | 0 | 0 | 0 | | |
| 2007 | | 21:53:25 | | McGichen Neil & Rollings Nathan | Royal Engineers | 20 | | | | | |  |
McGladdery G M | 21.0 | | | 19 | 3 | 0 | 0 | 0 | | |
| 1978 | | 20:39:47 | | McGladdery G M & Spencer A | Hereford | 14 | | | | | |  |
| 1979 | | 19:46:06 | | McGladdery G M & Spencer A | Hereford | 16 | | | | | |  |
| 1980 | | 22:29:30 | | McGladdery G M & Lyon G | Hereford | 28 | | | | | |  |
McGoldrick R C | 27.5 | | | 38 | 1 | 0 | 0 | 0 | | |
| 1975 | | 27:32:53 | | McGoldrick R C & Wright K B | 7 Para RHA | 38 | | | | | |  |
McGoughey C | 27.0 | | | 25 | 1 | 0 | 0 | 0 | | |
| 1973 | | 26:57:50 | | McGoughey C & Rees Arwyn | Royal Marines | 25 | | | | | |  |
McGowan Andrew | 36.0 | | | 79 | 1 | 0 | 0 | 0 | | |
| 2002 | | 36:00:27 | | Ingram Graham & McGowan Andrew | 8 Sig.Regt & Independent | 79 | | | | | |  |
McGowan W J | 24.2 | | | 85 | 1 | 0 | 0 | 0 | | |
| 1987 | | 24:13:01 | | McGowan W J & Homer B F | Marlow | 85 | | | | | |  |
Mcgrath Matt | 34.9 | | | 111 | 1 | 0 | 0 | 0 | | |
| 2015 | | 34:53:09 | | Byrne Paul & Mcgrath Matt | Laois Kayak & | 111 | | | | | |  |
Mcgrath Rory | 22.5 | | | 23 | 1 | 0 | 0 | 0 | | |
| 2013 | | 22:27:08 | | Kirkpatrick George & Mcgrath Rory | Falcon | 23 | | | | | Reserve |  |
McGregor A S | 28.0 | | | 25 | 1 | 0 | 0 | 0 | | |
| 1976 | | 28:00:10 | | Shergold S & McGregor A S | Royal Military Col. of Science | 25 | | | | | |  |
McGrory Colin | 23.8 | | | 55 | 1 | 0 | 0 | 0 | | |
| 2009 | | 23:45:09 | | McGrory Colin & Butcher Thomas | Royal Engineers | 55 | | | | | |  |