 | | | | Av Time | | | Place | Races | 1st | 2nd | 3rd | Trophies | |
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 | | | | | |  |
McIlwrick | 27.1 | | | 53 | 1 | 0 | 0 | 0 | | |
| 1997 | | 27:04:46 | | Merrick S B & McIlwrick | Independent | 53 | | | | | |  |
McInerney Andrew | 25.2 | | | 41 | 1 | 0 | 0 | 0 | | |
| 2002 | | 25:12:33 | | McInerney Andrew & Vallings Tom | Royal Military Col. of Science | 41 | | | | | |  |
McIntosh J | 33.0 | | | 29 | 1 | 0 | 0 | 0 | | |
| 1969 | | 32:59:37 | | Rooney B & McIntosh J | 16 Para | 29 | | | | | |  |
Mcintyre Donal | 17.8 | | | 3 | 1 | 0 | 0 | 1 | | |
| 1998 | | 17:47:04 | | Turrell Gavin & Mcintyre Donal | Richmond | 3 | | | | 1 | |  |
Mcintyre Sean | 23.5 | | | 30 | 1 | 0 | 0 | 0 | | |
| 2011 | | 23:30:36 | | Mcintyre Sean & O' Crualaoich Niall | Phoenix | 30 | | | | | European |  |
McKay A | 34.3 | | | 26 | 1 | 0 | 0 | 0 | | |
| 1966 | | 34:20:00 | | Crombie G J & McKay A | RAF Cranwell | 26 | | | | | |  |
Mckay Robert | 33.5 | | | 105 | 1 | 0 | 0 | 0 | | |
| 2011 | | 33:28:59 | | Mckay Robert & Horgan John | Devizes | 105 | | | | | |  |
McKeague D | 27.3 | | | 28 | 1 | 0 | 0 | 0 | | |
| 1967 | | 27:17:30 | | Kitchener K & McKeague D | 11 Eng Bde (Hameln) | 28 | | | | | |  |
McKeaveney J N | 34.7 | | | 94 | 1 | 0 | 0 | 0 | | |
| 1991 | C2 | 34:44:36 | | Jones M R & McKeaveney J N | Wiltshire Police | 94 | | | | | |  |
McKendrick J | 43.5 | | | 44 | 1 | 0 | 0 | 0 | | |
| 1973 | | 43:29:44 | | McKendrick J & Crothers J A | 3rd Division | 44 | | | | | |  |
Mckenna Barry | 22.5 | | | 30 | 10 | 0 | 0 | 0 | | |
| 2009 | | 23:06:12 | | Mckenna Barry & Wakley Gary | Exeter | 48 | | | | | |  |
| 2010 | | 22:08:37 | | Mckenna Barry & Wakley Gary | Exeter | 34 | | | | | |  |
| 2011 | | 23:16:58 | | Mckenna Barry & Wakley Gary | Exeter | 27 | | | | | |  |
| 2012 | | 23:43:49 | | Mckenna Barry & Wakley Gary | Exeter | 35 | | | | | |  |
| 2013 | | 23:04:18 | | Mckenna Barry & Wakley Gary | Exeter | 34 | | | | | |  |
| 2014 | | 22:02:58 | | Mckenna Barry & Wakley Gary | Exeter | 25 | | | | | |  |
| 2015 | | 21:49:41 | | Mckenna Barry & Wakley Gary | Exeter | 25 | | | | | |  |
| 2016 | | 21:37:18 | | Mckenna Barry & Wakley Gary | Exeter | 18 | | | | | |  |
| 2017 | | 21:29:15 | | Mckenna Barry & Wakley Gary | Exeter | 19 | | | | | |  |
| 2019 | | 23:15:16 | | Mckenna Barry & Wakley Gary | Artists Rifles | 35 | | | | | |  |
Mckenna Barry (Teddington) | 26.0 | | | 45 | 1 | 0 | 0 | 0 | | |
| 2022 | FB | 26:01:10 | | Mckenna Barry & Henderson James | Artists Rifles | 45 | | | | | |  |
McKenzie A | 29.4 | | | 16 | 1 | 0 | 0 | 0 | | |
| 1964 | | 29:23:35 | | McKenzie A & Peacock B | Metropolitan Police | 16 | | | | | |  |
McKenzie C | 27.0 | | | 14 | 1 | 0 | 0 | 0 | | |
| 1961 | | 26:58:00 | | McKenzie C & Godwin T | 1 Para | 14 | | | | | |  |
McKenzie I | 38.0 | | | 45 | 2 | 0 | 0 | 0 | | |
| 1961 | | 43:33:00 | | McKenzie I & Towes J | Metropolitan River Police | 48 | | | | | |  |
| 1967 | | 32:24:30 | | Peacock B & McKenzie I | Metropolitan Police AA | 41 | | | | | |  |
McKerr Darryl | 38.6 | | | 107 | 2 | 0 | 0 | 0 | | |
| 2007 | | 33:31:47 | | Hoey Stephen & McKerr Darryl | RMA Sandhurst | 80 | | | | | |  |
| 2009 | FB | 43:40:59 | | McKerr Darryl & Street Martin | 23 Engineer Regiment (Air Asslt) | 133 | | | | | |  |
McKinlay | 38.2 | | | 11 | 1 | 0 | 0 | 0 | | |
| 1951 | | 38:15:00 | | McKinlay & Acton | HMS Lochinvar | 11 | | | | | |  |
McKinley D B | 40.5 | | | 56 | 1 | 0 | 0 | 0 | | |
| 1967 | | 40:33:00 | | Oliphant M R & McKinley D B | Britannia College Dartmouth | 56 | | | | | |  |
McLaren Lyn | 23.0 | | | 60 | 4 | 0 | 0 | 0 | | |
| 1987 | | 24:04:09 | | Laycock Carol & McLaren Lyn | Windsor | 80 | | | | | |  |
| 1988 | | 23:51:00 | | McLaren Lyn & Laycock Carol | Windsor | 74 | | | | | |  |
| 1989 | | 22:22:36 | | McLaren Lyn & Eastgate J C | Newbury & Windsor | 45 | | | | | |  |
| 1992 | | 21:54:05 | | McLaren Lyn & Knowles D G | Newbury & Windsor | 39 | | | | | |  |
McLaughlin Paul | 23.9 | | | 30 | 1 | 0 | 0 | 0 | | |
| 2002 | | 23:51:01 | | Cole Peter & McLaughlin Paul | Dogleap | 30 | | | | | |  |