| Marin County Bicycle Coalition | San Francisco Bay Area | Club |
| Mendocino Coast Cyclists | Fort Bragg | Club |
| Mere Mortals Mountain Bike Club | Sunnyvale | Club |
| Monterey Off Road Cycling Association | Monterey | Club |
| Monticello Cycling Club | Vacaville | Club |
| Moonlight Velo | Encinitas | Club |
| Mt. Wilson Bicycling Association | Los Angeles | Club |
| Mtb Experience | Northern Ca | Club |
| MTBNomad | North San Diego county | Club |
| Nevada Union High School Mountain Bike Club/Team | Cedar Ridge | Club |
| Orange County Mountain Bike Association | Orange County | Club |
| Over the Bars MTB Club | Los Angeles and surrounding area | Club |
| Pasadena Mountain Bike Club | Pasadena | Club |
| Redding Mountain Biking | Redding | Club |
| Redding Trail Alliance (RTA) | Redding | Club |
| Redwood Empire Mountain Bike Alliance (REMBA) | Santa Rosa | Club |
| Responsible Organized Mountain Pedalers (ROMP) | Campbell | Club |
| SAGE Trail Alliance (SBMTV) | Santa Barbara | Club |
| San Diego Mountain Biking Association (SDMBA) | San Diego | Club |
| San Luis Obispo Bicycle Club (SLOBC) | San Luis Obispo | Club |
| Santa Barbara Mountain Bike Trail Volunteers (SBMTV) | Santa Barbara | Club |
| Santa Cruz Mountains Trail Stewardship (SCMTS) | Santa Cruz | Club |
| SF Urban Riders (SFUR) | San Francisco | Club |
| Share Mountain Bike Club | Corona Del Mar | Club |
| SHARE Mountain Bike Club | Orange County | Club |
