| Abbreviation | Definition |
|---|---|
| LMBS | Laramie Mountain Bike Series |
| LOCC | Lower Ormond Cycling Club |
| LRBP | Little Rock Bike Polo |
| LRCC | Lomond Roads Cycling Club |
| LWC | Lone Wolf Cycling |
| LWSB | LightWeight Super Bike |
| MABA | Montrose Area Bicycle Alliance |
| MACC | Metro Atlanta Cycling Club |
| MBAA | Mountain Bike Association of Arizona |
| MBAC | Mayor's Bicycle Advisory Committee |
| MBAC | Mayor's Bicycle Advisory Council |
| MBR | Mountain Bike Rider |
| MBT | Mountain Bike Trail |
| MCBC | Magic City Bicycle Collective |
| MCBC | Marin County Bicycle Coalition |
| MCF | Minnesota Cycling Federation |
| MCT | Morecambe Clock Tower |
| MHCC | Mohawk Hudson Cycling Club |
| MMBA | Michigan Mountain Biking Association |
| MMBA | Michigan Mountain Biking Association (Waterford, Michigan) |