| MacQueen's Bike Shop |  | PE | Charlottetown | 24 |
| Mad Elk Cycles | | | | 24 |
| Mandurahs bikeman | | | | 0 |
| Maros Bike | | | Cluj-Napoca | 1 |
| Marty's Mountian Cycle | | BC | Victoria | 93 |
| Matthew Larsen Wheelbuilding | | WA | Spokane | 1 |
| MEC (Mountain Equipment Co-op) Vancouver | | BC | Vancouver | 18 |
| MEC (Mountain Equipment Co-op) Victoria | | BC | Victoria | 16 |
| Mellow Velo | | NM | Santa Fe | 7 |
| Metal Motion Bikes | | | Witten | 3 |
| Middle of Town Cycling | | KY | Louisville | 1 |
| Monbike | | | Ponta Delgada | 32 |
| Monster Bike | | | Inverness | 22 |
| Monsterbike | | | Inverness | 16 |
| Moontime Cyclery - Edwards | | CO | Edwards | 7 |
| Morzine Mountainbike Mechanics | | | | 3 |
| Mountain Mania Cycles - Carterton | | | Carterton | 2 |
| Mountain Mania Cycles - Didcot | | | Didcot | 2 |
| Mountain Mania Cycles - Goring | | | Reading | 2 |
| Mountain Mania Cycles - Tring | | | Tring | 5 |
| Mountain Trax | | | Wokingham | 20 |
| MTB Connection | | NB | Lakeville | 2 |
| Mtb.lv Bicycle Workshop | | | Riga | 5 |
| Mud Cycles | | | | 14 |
| Mud Sweat & Gears | | AB | Red Deer | 10 |
| Mud, Sweat, and Gears | | AB | Spruce Grove | 13 |