| Mendip tri | 2 | View |
| Mendip Triathlon & Running Club | 33 | View |
| Mens 30plus Berkshire | 1 | View |
| Meon Valley Cycling Club | 2 | View |
| meon valley green runners | 1 | View |
 | Meon Valley Runners | 58 | View |
| Meon Valley Runners 3830573 | 2 | View |
| Meon Valley Runners 3435277 | 2 | View |
| Meon Valley Runners 3831619 | 1 | View |
| Meon Valley Runners 3834539 | 1 | View |
| Mercedes London | 2 | View |
| Mercenaire | 1 | View |
| Mercia Fell Runners | 21 | View |
| Mercian Nordic walking | 1 | View |
| Mere Runners | 7 | View |
| Meridian Tri Club | 28 | View |
| Meridian Triathlon Club | 56 | View |
| Merlin Judd Duff | 1 | View |
| Merriott wheelers | 2 | View |
| Mersea 5* Bootcamps | 1 | View |