| San Diego Mountain Biking Association | Trail Association | | | 27 |
| San Francisco Urban Riders | Trail Association | San Francisco | | 8 |
| San Francyclo - Inner Richmond | Guides & Tours | San Francisco | | 0 |
| San Francyclo - Lower Haight | Guides & Tours | San Francisco | | 0 |
| San Jose Motosport | Bike Shop | San Jose | | 2 |
| San Marcos Bike Repair | Bike Shop | | | 2 |
| Sand Canyon Cyclery | Bike Shop | | | 0 |
| Santa Barbara County Trails Council | Trail Association | Santa Barbara | | 1 |
| Santa Cruz Bicycles | Other | Santa Cruz | | 3 |
| Santa Cruz Cycleworks | Bike Shop | Santa Cruz | | 3 |
| Santa Cruz Mountains Trail Stewardship | Trail Association | Santa Cruz | | 46 |
| Santa Maria Valley Open Space | Trail Association | Santa Maria | | 1 |
| Santa Monica Mountains Cyclery | Bike Shop | | | 4 |
| Santa Rosa Cyclery | Bike Shop | | | 1 |
| Santiago Cycling | Bike Shop | | | 3 |
| Scott Valley Bikes | Bike Shop | Fort Jones | | 0 |
| Scotts Valley Cycle Sport | Bike Shop | | | 50 |
| Serious Cycling | Bike Shop | | | 1 |
| Sharp Bicycle | Bike Shop | Lafayette | | 5 |
| Sharp Bicycles | Bike Shop | Roseville | | 4 |
| Shasta Gravity Adventures | Race/Event Organizer | Mount Shasta | | 0 |
| Shelter Murphy | Bike Shop | | | 2 |
| Shifty Mobile Bicycle Mechanic | Bike Shop | Gilroy | | 1 |
| Shine Womens Mountain Bike Skills School | Coaching & Camps | | | 2 |
| Sierra Bicycle Werks | Bike Shop | Visalia | | 0 |
| Sierra Buttes Trail Stewardship | Trail Association | Quincy | | 14 |
| Sierra Eastside Mountain Bike Association | Trail Association | Bridgeport | | 0 |
| Sierra Free Packers (BCHC) | Trail Association | Oakhurst | | 1 |
| Sierra Ski And Cycle Works | Bike Shop | South Lake Tahoe | | 3 |
| Silicon Valley Mountain Bikers | Trail Association | | | 6 |
| Siskiyou Gardens, Parks and Greenway Association | Trail Association | | | 0 |
| Siskiyou Outdoor Recreation Alliance | Trail Association | Mount Shasta | | 0 |
| Six Sigma Winery and Ranch | Other | | | 0 |
| Snider's Bicycles - New Stine | Bike Shop | | | 8 |
| Snider's Bicycles - Union | Bike Shop | | | 14 |
| Snider's Cyclery | Bike Shop | | | 3 |
| SoCal Bike | Bike Shop | | | 1 |
| SoCal Cycling League - NICA | Other | | | 0 |
| SoCalCycling.com Elite Team | Race Team | Claremont | | 0 |
| Sonoma Bicycle Company | Bike Shop | Petaluma | | 1 |
| Sonoma Valley Cyclery | Bike Shop | Sonoma | | 3 |
| South Orange County Trail Coalition | Trail Association | | | 8 |
| South Shore Bikes | Bike Shop | South Lake Tahoe | | 4 |
| Southern California Bicycles | Bike Shop | | | 1 |
| Southern Sierra Cyclists | Club | Exeter | | 4 |
| Southern Sierra Fat Tire Association | Trail Association | Bakersfield | | 2 |
| Southridge Cycling | Bike Shop | | | 5 |
| Spearhead Bicycle Excellence | Bike Shop | | | 0 |
| Split Rock Suspension | Bike Shop | | | 0 |
| Split Rock Tap and Wheel | Bike Shop | Fairfax | | 0 |
| Splitrock Tap & Wheel | Bike Shop | Fairfax | | 44 |
| Spoke N Wheel | Bike Shop | | | 8 |
| Spoke N Wheel Bicycle | Bike Shop | | | 0 |
| Spokes N Stuff | Bike Shop | | | 0 |
| Spokesman Bicycles | Bike Shop | | | 8 |
| SpokeX Bike Co. | Bike Shop | Temecula | | 0 |
| Sport & Cycle Fortuna | Bike Shop | Fortuna | | 0 |
| Sport Chalet | Bike Shop | | | 2 |
| Sports Basement Campbell | Bike Shop | | | 3 |
| Sports Basement Presidio | Bike Shop | San Francisco | | 3 |
| Sports Basement Walnut Creek | Bike Shop | Walnut Creek | | 1 |
| Sports Center Bicycles | Bike Shop | | | 0 |
| Sports Ltd | Bike Shop | | | 16 |
| Sprocket Mobile Bike Repair | Bike Shop | San Francisco | | 1 |
| St Bikes | Bike Shop | San Jose | | 0 |
| St. Helena Cyclery | Bike Shop | st helena | | 3 |
| Start Haus | Bike Shop | Truckee | | 1 |
| Steve's Bike Shop | Bike Shop | | | 9 |
| Steven's Bicycles | Bike Shop | Clovis | | 1 |
| Steven's Bike Shop | Bike Shop | | | 5 |
| Stewards of Briones | Trail Association | Pleasant Hill | | 3 |
| Stix & Stones Mobile Repair | Bike Shop | Walnut Creek | | 0 |
| Stray Dog Bicycles | Bike Shop | Rocklin | | 2 |
| Studio Cycle Co | Bike Shop | | | 1 |
| Studio Velo | Bike Shop | | | 5 |
| StudioVelo | Bike Shop | | | 2 |
| Summit Bicycles | Bike Shop | | | 3 |
| Summit Bicycles Los Gatos | Bike Shop | | | 2 |
| Summit Bikes | Bike Shop | Burlingame | | 4 |
| Summit Bikes | Bike Shop | | | 0 |
| Summit Ski And Cycle | Bike Shop | | | 4 |
| Sun Bike Shop | Bike Shop | Milpitas | | 8 |
| Sunset Cycles | Bike Shop | | | 1 |
| Sunshine Bicycle Center | Bike Shop | | | 13 |
| Sunshine Bicycles | Bike Shop | | | 0 |
| Sunshine Bicycles | Bike Shop | Gilroy | | 1 |
| Sunshine Bicycles - Gilroy | Bike Shop | Gilroy | | 1 |
| Surf City Cyclery | Bike Shop | | | 4 |
| Surf City Cyclery | Bike Shop | | | 6 |
| Susanville Area Bicycle Association | Trail Association | Susanville | | 3 |
| Switchback Cyclery | Bike Shop | | | 3 |
| Synergized Bicycles & Carbon Assesories | Bike Shop | Rancho Cordova | | 1 |
| Tahoe Area Mountain Biking Association | Trail Association | South Lake Tahoe | | 38 |
| Tahoe Cross-Country Ski Area | Bike Shop | Tahoe City | | 0 |
| Tahoe Donner | Other | Truckee | | 1 |
| Tahoe Donner Bikeworks | Coaching & Camps | Truckee | | 0 |
| Tahoe Donner MTB CLUB | Club | Truckee | | 5 |
| Tahoe Sports Ltd | Bike Shop | South Lake Tahoe | | 0 |
| Tam Bikes | Bike Shop | Mill Valley | | 61 |
| Team Factory Cycles | Bike Shop | Bakersfield | | 1 |
| Team Ridebiker/Rock N Road/Velosport | Race Team | | | 3 |
| Team RokForm Cycling | Club | | | 2 |
| Teen Trail Corps | Other | Berkeley | | 0 |
| Tehachapi Mountain Trails Association | Trail Association | Tehachapi | | 8 |
| The Backcountry | Bike Shop | Truckee | | 15 |
| The Beaten Path | Shuttle Service | | | 0 |
| The Bicycle Trip | Bike Shop | | | 8 |
| The Bike Company | Bike Shop | | | 10 |
| The Bike Connection | Bike Shop | | | 0 |
| The Bike Connection | Bike Shop | Palo Alto | | 5 |
| The Bike Palace | Bike Shop | | | 0 |
| The Bike Palace | Race Team | San Pedro | | 3 |
| The Bike Peddler | Bike Shop | | | 25 |
| The Bike Revolution | Bike Shop | | | 7 |
| The Bike Shop | Bike Shop | Redding | | 0 |
| The Bike Shop | Bike Shop | | | 17 |
| The Bike Shop | Bike Shop | | | 0 |
| The Bike Shop at Del Sur | Bike Shop | | | 2 |
| The Bike Valet Mobile Mechanic | Bike Shop | | | 0 |
| The Fifth Season | Bike Shop | | | 10 |
| The Hub | Bike Shop | Roseville | | 8 |
| The Hub Bicycles - Roseville | Bike Shop | Roseville | | 3 |
| The Hub Cyclery | Bike Shop | Cotati | | 4 |
| The Hub Cyclery | Bike Shop | Roseville | | 5 |
| The Hub Napa | Bike Shop | Napa | | 3 |
| The Los Angeles Bike Park Collective | Trail Association | | | 7 |
| The Mob Shop | Bike Shop | | | 0 |
| The Off Ramp | Bike Shop | Santa Clara | | 0 |
| The Off Ramp - Santa Clara | Bike Shop | Santa Clara | | 3 |
| The Offramp- Mountain View | Bike Shop | Mountain View | | 0 |
| The Path Bike Shop - Live Oak | Bike Shop | | | 75 |
| The Path Bike Shop - Tustin | Bike Shop | | | 61 |
| The Pedal Smith | Bike Shop | | | 0 |
| The Pedaler | Bike Shop | El Sobrante | | 2 |
| The Ride Guides | Guides & Tours | | | 2 |
| The Ride Guides | Coaching & Camps | Santa Cruz | | 0 |
| The Ride Guides | Coaching & Camps | | | 3 |
| The Shop at Pedalers Fork | Bike Shop | | | 1 |
| The Spokesman Bicycles | Bike Shop | | | 3 |
| The Sports Basement | Bike Shop | Los Altos | | 1 |
| The Squeaky Wheel | Coaching & Camps | Palmdale | | 1 |
| The Watershed Research & Training Center | Trail Association | Hayfork | | 1 |
| The Wheel Peddler | Bike Shop | Oakley | | 1 |
| The Wheelhouse | Other | Nevada City | | 0 |
| Three Rivers Bicycle Solutions | Bike Shop | Three Rivers | | 1 |
| Tigertail Trail Builders | Trail Association | | | 0 |
| Tj Frisbee Bicycles | Bike Shop | Ridgecrest | | 3 |
| Tonello's Bike Barn | Bike Shop | | | 0 |
| Topanga Creek Bicycles | Bike Shop | Topanga | | 6 |
| Torelli Bicycle Company | Bike Shop | Los Angeles | | 0 |
| Tour Of Nevada City | Bike Shop | Nevada City | | 31 |
| Town Center Bike and Tri | Bike Shop | | | 1 |
| Trabuco Canyon Trail Crew | Trail Association | | | 4 |
| Trail Head Cyclery | Bike Shop | Cupertino | | 98 |
| Trail House | Bike Shop | Santa Rosa | | 1 |
| Trail Less Traveled Bike and Gear | Bike Shop | Groveland | | 0 |
| Trail Tuned Suspension | Other | Lancaster | | 0 |
| Trail Tuned Suspension LLC | Other | Santa Clarita | | 1 |
| Trailhead Cyclery | Bike Shop | San Jose | | 27 |
| Tread | Bike Shop | | | 21 |
| Tread | Bike Shop | | | 19 |
| Trees-N-Trails | Trail Association | Happy Camp | | 0 |
| Trek Bicycle Store | Bike Shop | | | 6 |
| Trek Bicycle Superstore (kearny Mesa) | Bike Shop | | | 6 |
| Trek Bicycle Superstore - La Mesa | Bike Shop | La Mesa | | 5 |
| Trek Bicycle Superstore - North County | Bike Shop | | | 3 |
| Trek Bicycle Superstore - San Diego | Bike Shop | | | 3 |
| Trek Bicycles Santa Clarita-Saugus | Bike Shop | | | 1 |
| Trek Bikes Of Ventura | Bike Shop | | | 2 |
| Trek Store Of Santa Rosa | Bike Shop | | | 7 |
| Trek Superstore North County Vista | Bike Shop | | | 2 |
| Tri Sport Bicycles | Bike Shop | | | 0 |
| Tri-a-bike | Bike Shop | Palm Desert | | 3 |
| Trinity Cyclery | Bike Shop | grover beach | | 5 |
| Trinity Trail Alliance | Trail Association | Weaverville | | 2 |
| Truckee Dirt Union | Trail Association | Truckee | | 1 |
| Truckee Donner Land Trust | Trail Association | Truckee | | 2 |
| Truckee Trails Foundation | Trail Association | Truckee | | 9 |
| Twin's Bike Shop | Bike Shop | Lomita | | 1 |
| Two Wheeler Dealer | Bike Shop | | | 5 |
| Two Wheels One Planet | Guides & Tours | | | 0 |
| Two Wheels One Planet | Bike Shop | | | 6 |
| Uc Cyclery | Bike Shop | | | 3 |
| UCSB Cycling Team | Club | | | 17 |
| Ukiah Valley Trail Group | Trail Association | Ukiah | | 4 |
| Universal Cycles | Bike Shop | Studio City | | 3 |
| Upshift Cycles | Bike Shop | San Jose | | 0 |
| USFS - Truckee Ranger District | Trail Association | Truckee | | 0 |
| Valley Bicycle | Bike Shop | Newhall | | 1 |
| Valley Bicycles | Bike Shop | | | 1 |
| Vans Bicycle Center | Bike Shop | Yuba City | | 5 |
| Velo Bum Elite Cyclery | Bike Shop | Rancho Mirage | | 0 |
| Velo Hangar | Bike Shop | | | 0 |
| Velo Hangar | Bike Shop | | | 0 |
| Velo Pasadena | Bike Shop | | | 1 |
| Velo Pro | Bike Shop | | | 17 |
| Velo Pro Cyclery Goleta | Bike Shop | Goleta | | 2 |
| Velo Wrench | Bike Shop | Vacaville | | 1 |
| VeloFix San Francisco | Other | San Francisco | | 1 |
| Velofix Santa Monica | Bike Shop | | | 3 |