The Ogre's Guide to Mountain Biking
- Photo gallery and ride guides for Northern California rides in the San Joaquin, Calaveras, Tuolumne, El Dorado and Sacramento County Areas.
- http://ogrehut.com/

Top Ten California Singletrack
- Mountain bike trail descriptions and photos.
- http://gorp.away.com/gorp/location/ca/top10mtb.htm

Department of Motor Vehicles Bicycle Rules and Safety
- Traffic laws for bicycles plus some helpful hints and general bicycle information.
- http://www.dmv.ca.gov/about/bicycle.htm

Voice of Da
- San Francisco's bike messenger zine. Alleycat races, CMWC, rides, bands, fiction, union organizing, news, parties, games, and photos from the Bay Area bike messenger scene.
- http://www.ahalenia.com/da/index.html

The Trail Page
- List of mountain biking and hiking trails in the Sacramento Area.
- http://www.unicycling.com/brett/trail_list.shtml

Tour of the Unknown Coast
- Century through farmlands and coastal redwoods. 10, 20 and 50 mile family rides as well.
- http://www.tuccycle.org/

San Francisco Bay Area Bike Rides
- 40 to 60 mile rides which are presented to highlight the best that the area has to offer.
- http://home.pacbell.net/leewaysf/thebike.html

Mountain Biking Non Stop
- Trail descriptions and notes to mountain bike rides in Northern California.
- http://www.bmxnonstop.com/mtb/rides.htm

Mercury Rising
- San Francisco's classic bike messenger zine from the early '90s. Bike advocacy, interviews, essays, comics, races, rides, photos, stories from the dynamic bike messenger community of the Bay Area.
- http://www.ahalenia.com/merc/index.html

Marin Headlands Mountain Biking
- Directions, profiles and descriptions of mountain bike trails in the Golden Gate National Recreation Area.
- http://www.gatetrails.com/headlands.html

Ladah Foundation
- Photos and reviews of San Francisco Bay Area mountain bike trails.
- http://www.ladah.com/trails.htm

Climbs in San Francisco Bay Area
- Grade profiles of cycling routes and climbs. Includes plans for building and calibrating a gradiometer.
- http://www-graphics.stanford.edu/~lucasp/bike-grade.html

Delta Pedalers Bicycle Club
- A road, off road and tandem bicycle club for inexperienced, intermediate and advanced cyclists in the California East Bay area.
- http://www.deltaped.org/

The Ben Eckenhoff Memorial Bike Ride
- Fundraiser ride for the J. Benjamin Eckenhoff Fund for Research in Hematology, established to support research in chronic lymphocytic leukemia and associated autoimmune diseases. Includes history and sponsored research information.
- http://www.benride.org/

BikeLink
- Event calendar, commuting information, event guide, bicycle laws and safety.
- http://www.bikelink.com/

Specialized Coronary Outpatient Rehabilitation Cardiac Cycle Club
- Information on sponsored rides, products and services.
- http://www.bikescor.com/

Los Angeles Bike Paths
- Clickable map of Los Angeles and northern Orange County showing all Class I bike paths, with links to a close-up of each one, including mileage, map, photos.
- http://www.labikepaths.com

Homebodies Workout
- Indoor cycling and spinning class in Los Angeles.
- http://www.homebodiesworkout.com/

The Full Cycle
- Events for the professional and recreational riders plus a directory of clubs in the Southern California area.
- http://www.thefullcycle.com/

Cycling Time Trial Racing in Southern California
- Cycling time trial racing information guide for Southern California. Includes information, news, aerodynamics data, race calendars and course information, product reviews, training tips and schedules, bike photo gallery.
- http://www.timetrial.org

California Triple Crown
- Long distance bicycling showcase and information on double century rides.
- http://www.caltriplecrown.com/

Biking Destinations
- Southern California mountain biking trail information for Orange County, Big Bear Lake, San Diego, and Sedona areas. Includes maintenance tips and retail gear.
- http://www.bikingdestinations.com/

Back On Track Productions
- Professionally managed cycling events and races in Southern California.
- http://www.backontrackproductions.com/

Cycle California
- Includes informational stories and a cycling calendar.
- http://www.cyclecalifornia.com/

GPS Mountain Bike Trail Guide
- Global positioning system waypoints, routes, tracks, and maps of singletrack biking trails in Northern California. Resources include a world directory of MTB sites with GPS data and a review of GPS cartography software.
- http://www.iron-horse.us/mtb/

BikeCal
- List of organized bicycle rides in Northern California, covering the San Francisco Bay Area, Santa Clara, Alameda, Contra Costa, Marin, Sonoma, Napa, Mendocino and Sacramento counties.
- http://www.bikecal.com/