Professionally managed cycling events and races in Southern California.

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.

Event calendar, commuting information, event guide, bicycle laws and safety.

Southern California mountain biking trail information for Orange County, Big Bear Lake, San Diego, and Sedona areas. Includes maintenance tips and retail gear.

Long distance bicycling showcase and information on double century rides.

Grade profiles of cycling routes and climbs. Includes plans for building and calibrating a gradiometer.

Bicycle moto cross racing track and pro shop in Ontario, Southern California.

Includes informational stories and a cycling calendar.

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.

A road, off road and tandem bicycle club for inexperienced, intermediate and advanced cyclists in the California East Bay area.

Traffic laws for bicycles plus some helpful hints and general bicycle information.

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.

Annual fund raiser ride for West Marin Senior Services. Includes ride description, registration information and rules.

Indoor cycling and spinning class in Los Angeles.

Cycling guide for Humboldt Bay, Northern California. Illustrates bike routes, bus stops, outdoor recreation opportunities, birdwatching sites, bike safety and resources.

Photos and reviews of San Francisco Bay Area mountain bike trails.

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.

Directions, profiles and descriptions of mountain bike trails in the Golden Gate National Recreation Area.

San Diego bicycle moto cross training track.

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.

Scenic and non-technical rides in Los Angeles area.

Trail descriptions and notes to mountain bike rides in Northern California.

40 to 60 mile rides which are presented to highlight the best that the area has to offer.

Information on sponsored rides, products and services.

Information and news of interest to tandem bicycle teams. Calendar of events in the U.S. Roster of tandem clubs in the world.

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.

Events for the professional and recreational riders plus a directory of clubs in the Southern California area.

Photo gallery and ride guides for Northern California rides in the San Joaquin, Calaveras, Tuolumne, El Dorado and Sacramento County Areas.

List of mountain biking and hiking trails in the Sacramento Area.

Mountain bike trail descriptions and photos.

Century through farmlands and coastal redwoods. 10, 20 and 50 mile family rides as well.

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.