| Dirt Dogs of Florida | Miami | Club |
| Dirt Dogs of Kentucky | Georgetown/Lexington | Club |
| Dirt Side Sisters | Dallas / Ft. Worth | Club |
| Dirty Dropouts | Southeastern Michigan | Club |
| Dirty Tread Club | Fort Smith | Club |
| Disciples of Dirt (DOD) | Eugene | Club |
| Door County Silent Sport Alliance | Sturgeon Bay | Club |
| Dothan MTB Group | Dothan | Club |
| Down East Cyclists | Jacksonville, NC | Club |
| Downhill Coalition | Junction City | Club |
| E-Mountain Bike Lovers | Washington DC, Maryland and Virginia | Club |
| Eagle Cycling Club | Napa | Club |
| Earth Riders Mountain Bike Club | Kansas City | Club |
| Earth Riders Trail Association | | Club |
| East Carolina velo Cycling club | Greenville | Club |
| Eastern Virginia Mountain Bike Association (EVMA) | | Club |
| Echo Hills Trail Builders | Hermiston | Club |
| Eco Trails - Eagle County | Gypsum | Club |
| EDH Trails | El Dorado Hills | Club |
| Elkhorn Valley Cycling Club | Norfolk | Club |
| Ellijay Mountain Bike Association (EMBA) | Ellijay | Club |
| Ely Nordic Ski and Bike Club | Ely | Club |
| Empire Cycling Group | Flushing | Club |
| Erie Mountain Bike Club | Erie | Club |
| Erie Singletrack Advocates (ESA) | Erie | Club |
