 | | | | Av Time | | | Place | Races | 1st | 2nd | 3rd | Trophies | |
Macintyre Tadug | 23.9 | | | 31 | 1 | 0 | 0 | 0 | | |
| 2002 | | 23:51:30 | | Grattan Olivia & Macintyre Tadug | Irish Canoe Union | 31 | | | | | |  |
Mack Julian | 28.5 | | | 106 | 1 | 0 | 0 | 0 | | |
| 2009 | | 28:32:25 | | Mack Julian & Mee Jim | Independent | 106 | | | | | |  |
Mackay D | 31.5 | | | 14 | 1 | 0 | 0 | 0 | | |
| 1962 | | 31:27:00 | | Mackay D & Ledsom G | JLR RE | 14 | | | | | |  |
Mackay D J | 27.4 | | | 85 | 3 | 0 | 0 | 0 | | |
| 1988 | | 29:11:30 | | Mackay D J & Bushell A R | Winchester & District | 114 | | | | | |  |
| 1990 | | 26:52:29 | | Mackay D J & Webb J A | Winchester & District | 101 | | | | | |  |
| 1996 | | 26:12:51 | | Bell Susan Margaret & Mackay D J | Winchester & District | 39 | | | | | |  |
Mackay Sam | 25.4 | | | 63 | 1 | 0 | 0 | 0 | | |
| 2017 | | 25:22:30 | | Vickers Liam & Mackay Sam | Royal Engineers | 63 | | | | | |  |
Mackenzie Alex | 22.4 | | | 20 | 1 | 0 | 0 | 0 | | |
| 2002 | | 22:25:04 | | Smedley R A B & Mackenzie Alex | RMA Sandhurst | 20 | | | | | |  |
Mackenzie Brian | 25.5 | | | 42 | 1 | 0 | 0 | 0 | | |
| 2005 | | 25:31:57 | | Maccallum Iain & Mackenzie Brian | Royal Electrical & Mechanical Engineers | 42 | | | | | |  |
Mackenzie I | 34.5 | | | 22 | 1 | 0 | 0 | 0 | | |
| 1962 | | 34:31:30 | | Budworth G & Mackenzie I | Thames Div Police | 22 | | | | | |  |
Mackenzie K J | 23.8 | | | 50 | 3 | 0 | 0 | 0 | | |
| 1984 | | 24:22:24 | | Woodruff R & Mackenzie K J | RAF | 60 | | | | | |  |
| 1985 | | 23:05:50 | | Mackenzie K J & Parker F E | RAF CA | 48 | | | | | RAF |  |
| 1991 | | 23:59:55 | | Mackenzie K J & Marshall C | Hemel Hempstead | 42 | | | | | |  |
Mackenzie R A F | 21.6 | | | 41 | 1 | 0 | 0 | 0 | | |
| 1987 | | 21:33:56 | | Edwards Roger A & Mackenzie R A F | Blackwater Valley | 41 | | | | | |  |
Mackicham A | 48.8 | | | 44 | 1 | 0 | 0 | 0 | | |
| 1963 | | 48:50:15 | | Mackicham A & Vincent R | RAF Henlow | 44 | | | | | |  |
Mackinnon Andrew | 35.0 | | | 107 | 1 | 0 | 0 | 0 | | |
| 2011 | | 34:59:25 | | Bailey Christopher & Mackinnon Andrew | The Royal Dragoon Guards | 107 | | | | | |  |
Mackintosh Sarah | 22.8 | | | 31 | 1 | 0 | 0 | 0 | | |
| 1997 | | 22:49:09 | | Mackintosh Sarah & Snook G | Leaside | 31 | | | | | |  |
MacLachlan A | 21.6 | | | 42 | 1 | 0 | 0 | 0 | | |
| 1987 | | 21:34:51 | | Twigge M & MacLachlan A | Royal Engineers | 42 | | | | | |  |
Maclarg Roland | 26.2 | | | 66 | 1 | 0 | 0 | 0 | | |
| 2013 | | 26:12:08 | | Cooper David & Maclarg Roland | Southampton & Independent | 66 | | | | | |  |
Maclean A | 26.8 | | | 100 | 1 | 0 | 0 | 0 | | |
| 1990 | | 26:45:06 | | Maclean A & Ellis A L E | GATW | 100 | | | | | |  |
Maclean J | 32.1 | | | 78 | 1 | 0 | 0 | 0 | | |
| 1995 | | 32:05:25 | | Maclean J & Marriott A C J | Army Trg. Regt. Winchester | 78 | | | | | |  |
Macleod J B | 31.5 | | | 30 | 1 | 0 | 0 | 0 | | |
| 1970 | | 31:31:20 | | Macleod J B & Potter A M | RMA Sandhurst | 30 | | | | | |  |
Macleod Kirsty | 32.3 | | | 96 | 2 | 0 | 0 | 0 | | |
| 2011 | | 36:29:32 | | Campbell Anna & Macleod Kirsty | Auotc | 110 | | | | | |  |
| 2012 | | 28:02:38 | | Campbell Anna & Macleod Kirsty | Army Canoe Union | 82 | | | | | |  |
MacLeod Morna Lelsey | 24.3 | | | 62 | 1 | 0 | 0 | 0 | | |
| 1992 | | 24:17:05 | | MacLeod Morna Lelsey & Oooley M T | West Cumbria | 62 | | | | | |  |
Macleod Nicola | 27.6 | | | 102 | 1 | 0 | 0 | 0 | | |
| 2014 | | 27:38:53 | | Leijerstam Maria & Macleod Nicola | Army Canoe Union | 102 | | | | | |  |
MacMillan G | 25.0 | | | 52 | 1 | 0 | 0 | 0 | | |
| 1995 | | 24:58:40 | | MacMillan G & Norris G | RNKA | 52 | | | | | |  |
Macmillan R C | 28.9 | | | 115 | 1 | 0 | 0 | 0 | | |
| 1990 | | 28:53:17 | | Macmillan R C & Taylor M C | Independent | 115 | | | | | |  |
MacNaughton R | 59.2 | | | 50 | 1 | 0 | 0 | 0 | | |
| 1968 | | 59:12:00 | | Crawshay R & MacNaughton R | 20 CDO (AO) Bty RA | 50 | | | | | |  |
Macpherson L | 21.6 | | | 34 | 1 | 0 | 0 | 0 | | |
| 1986 | | 21:33:51 | | Black Dave & Macpherson L | Artists Rifles | 34 | | | | | |  |
MacPherson M | 22.4 | | | 51 | 1 | 0 | 0 | 0 | | |
| 1987 | | 22:22:00 | | Black & MacPherson M | Hemel Hempstead | 51 | | | | | |  |
Macpherson W A | 30.7 | | | 2 | 1 | 0 | 1 | 0 | | |
| 1956 | FB | 30:41:00 | | Macpherson W A & Marriot R | 21 (Artists) | 2 | | | 1 | | Tyne |  |
Macqueen Ian | 26.1 | | | 74 | 2 | 0 | 0 | 0 | | |
| 2015 | | 24:50:17 | | Macqueen Ian & Macqueen Jacqueline | Devizes | 66 | | | | | |  |
| 2016 | C2 | 27:24:40 | | Macqueen Ian & Macqueen Jacky | Devizes | 82 | | | | | |  |
Macqueen Jacky | 27.4 | | | 82 | 1 | 0 | 0 | 0 | | |
| 2016 | C2 | 27:24:40 | | Macqueen Ian & Macqueen Jacky | Devizes | 82 | | | | | |  |
Macqueen Jacqueline | 24.8 | | | 66 | 1 | 0 | 0 | 0 | | |
| 2015 | | 24:50:17 | | Macqueen Ian & Macqueen Jacqueline | Devizes | 66 | | | | | |  |
MacSorley Fred (Teddington) | 24.1 | | | 41 | 1 | 0 | 0 | 0 | | |
| 2022 | | 24:07:23 | | King Derek & MacSorley Fred | Canoe Association of Northern Island | 41 | | | | | Veteran |  |
Maddison H | 25.6 | | | 51 | 1 | 0 | 0 | 0 | | |
| 1999 | | 25:37:30 | | Maddison H & Gibbs M P | Thunderer Squadron | 51 | | | | | |  |
Maddocks Lee (Teddington) | 17.2 | | | 4 | 1 | 0 | 0 | 0 | | |
| 2022 | | 17:11:37 | | Maddocks Lee & Bosworth William | Royal Marines Kayak Association | 4 | | | | | Lee,Navy,Services |  |
Magar Sangum Khapangi (Teddington) | 19.5 | | | 17 | 1 | 0 | 0 | 0 | | |
| 2022 | | 19:32:30 | | Magar Sangum Khapangi & Dalziel Oliver | Royal Engineers | 17 | | | | | |  |
Magil Jonathan | 25.2 | | | 68 | 1 | 0 | 0 | 0 | | |
| 2014 | | 25:13:25 | | Magil Jonathan & Thompson Stuart | Army Canoe Union | 68 | | | | | |  |
Magness D | 20.9 | | | 18 | 1 | 0 | 0 | 0 | | |
| 1978 | | 20:55:22 | | Stainsby Thomas Alan & Magness D | Metropolitan Police | 18 | | | | | |  |
Magrath Anthony | 26.0 | | | 46 | 1 | 0 | 0 | 0 | | |
| 2005 | C2 | 26:00:30 | | Wingham James & Magrath Anthony | Paddleplus | 46 | | | | | |  |
Maguire C R | 23.7 | | | 56 | 1 | 0 | 0 | 0 | | |
| 1982 | | 23:44:13 | | Maguire C R & Owsnett M | 28 A. E. Regt. | 56 | | | | | |  |
Maguire Kieran | 22.4 | | | 25 | 1 | 0 | 0 | 0 | | |
| 2007 | | 22:26:13 | | Blackman Peter & Maguire Kieran | Royal Engineers | 25 | | | | | |  |
Maher T | 48.1 | | | 59 | 1 | 0 | 0 | 0 | | |
| 1967 | | 48:05:00 | | Thorpe R N & Maher T | Richmond | 59 | | | | | |  |
Mahoney James | 23.9 | | | 42 | 2 | 0 | 0 | 0 | | |
| 2012 | | 25:04:39 | | Mahoney James & Todd Chris | Devizes | 54 | | | | | |  |
| 2013 | | 22:46:55 | | Mahoney James & Todd Chris | Devizes | 30 | | | | | |  |
Mahony Nicholas | 26.5 | | | 67 | 1 | 0 | 0 | 0 | | |
| 2013 | | 26:27:34 | | Mahony Nicholas & Warne Josh | Southampton | 67 | | | | | |  |
Maidment A P | 24.4 | | | 25 | 1 | 0 | 0 | 0 | | |
| 1996 | | 24:21:05 | | Light R G & Maidment A P | Cricket | 25 | | | | | |  |
Maidment D | 26.4 | | | 54 | 3 | 0 | 0 | 0 | | |
| 1983 | | 32:23:19 | | Maidment D & Walker H | Ealing Venture Sea Scouts U. | 56 | | | | | |  |
| 1984 | | 26:07:00 | | Griffiths G R & Maidment D | 4th New Forest N, V Scouts | 81 | | | | | |  |
| 1989 | | 20:43:29 | | Griffiths G R & Maidment D | Independent | 25 | | | | | |  |
Main Oliver | 21.8 | | | 30 | 4 | 0 | 0 | 0 | | |
| 2009 | | 24:36:50 | | Main Oliver & Bell David | Royal Marines | 66 | | | | | |  |
| 2010 | | 22:23:25 | | Main Oliver & Taylor Ian | Southampton | 39 | | | | | |  |