| Arnold Rim Trail Association | Camp Connell | Club |
| Asheville BOMB | Asheville | Club |
| Athens Bicycle Club (ABC) | Athens | Club |
| Atomic Mountain Bikers | Florence | Club |
| Atomic Mountain Bikers | Flroence | Club |
| Auburn Off Road Bike Association | Auburn | Club |
| Audi Cycling Team - Kentucky | Lexington, Louisville, Central, Northern | Race Team |
| Augusta BOMB | Augusta | Club |
| Austin Ridge Riders | Austin | Club |
| BAADR Mountain Bike Club | Tampa Bay | Club |
| Bald Eagle Mountain Bike Association | State College | Club |
| Barkeater Trails Alliance | Wilmington | Club |
| Baton Rouge Area Mountain Bike Association (BRAMBA) | Baton Rouge | Club |
| Believers on Mountain Bikes - Bend | Bend | Club |
| Bicycle Colorado | Denver | Club |
| Bicycle Trails Council of Marin | Fairfax | Club |
| Bicycle Trails Council of the East Bay (BTCEB) | Berkeley | Club |
| Bicycling Trails For Fun | Brevard County | Club |
| Bicyclists of Nevada County (BONC) | Nevada City | Club |
| Big South Fork Bicycle Club | Oneida | Club |
| Big Wheel Racing | Durango | Club |
| Bigfoot Bicycle Club | McKinleyville | Club |
| Bike Fort Collins (FOCO) | Fort Collins | Club |
| Bike Masters Cycling Club | Black Diamond / Maple Valley | Race Team |
| Bike Shop of Bel Air Racing Team | Mid-Atlantic | Race Team |
