Updated to 2012
Transportation Choices Summit — May 1 and 2, 2012 Summit conference on creating sustainable transportation in California; Sacramento.
Alpine Challenge — May 5, 2012 A premier ride in the eastern San Diego County mountains. Route comprise 25 miles, 50 miles, and 62 miles. Sponsored by the Kiwanis Club of Alpine.

Wine Country Century — May 5, 2012 Four routes through Sonoma County wine country with options for 35 miles, 66 miles, 100 miles, or 130 miles. Limit 2,500; sponsored by Santa Rosa Bicycling Club (registration opens Feb. 1)
Cruisin’ the Conejo — May 5, 2012 Six routes, including two metric centuries and a full century, that leave from Thousand Oaks mark the ride; sponsored by Conejo Valley Cyclists.
Tour of the Unknown Coast — May 5, 2012 Bicyclists can tour northern California’s remote Humboldt County on routes ranging from 20 miles to 200 miles; metric century and century bike rides offered as well.
Ride Ataxia NorCal — May 5, 2012 Options of 15, 30 or 50 miles or a metric century leaving Memorial Stadium in Davis. Benefits the Friedreich’s Ataxia Research Alliance, which is researching a cure for the debilitating, life-shortening neuro-muscular disorder. Outback Steakhouse provides post-ride food.
Long Beach Bicycle Festival — May 5, 2012 Ride a 31- or 62-mile option or the 100-mile gran fondo from the Queen Mary to the Hollywood sign and back.
Delta Century — May 6, 2012 Flat 100-mile ride in Central Valley, starting at Jessie’s Grove Winery, Lodi. Sponsored by Stockton Bike Club
Grizzly Peak Century — May 6, 2012 A 100-mile ride up Grizzly Peak in eastern suburbs of San Francisco Bay; leaves from Campolindo High School, Moraga; sponsored by Grizzly Peak Cyclists
Tour de Cure – Yountville — May 6, 2012 Starts at the Veterans Home of California, featuring several options from 10 to 100 miles. Fund-raiser for American Diabetes Foundation.
US Bicycling Hall of Fame Legends Gran Fondo — May 6, 2012 A fund-raiser for the hall of fame in Davis. Gran Fondo-style ride capped at 1,000 participants.
Central Coast Double Century — May 12, 2012 The bike ride leaves Paso Robles and climbs into the Santa Lucia Range and down the Salinas Valley; total 209 miles and 13,000 feet of climbing; part of the Triple Crown; there’s also a 170-mile Central Coast Challenge.
Rockhopper Classic — May 12, 2012 Mountain bike race; one-day licenses available. Hosted in Vacaville by Monticello Cycling.
Gold Country Century — May 12, 2012 The Sierra foothills around the town of Auburn are the setting for 33- and 68-mile bike ride options presented by the Sierra Foothills Cycling Club. Also short family rides.
Sonoma County Backroad Challenge — May 19, 2012 Features three bike ride options on Sonoma County’s pastoral roads — 99, 70 and 35 miles. The loops start and finish at Lagunitas Brewery in Petaluma. Presented by Petaluma Sunrise Rotary.
Hungry Buzzard Century — May 19, 2012 Cutler Park near Visalia; Hungry Buzzard is 105 miles, Mountain House Metric is 70 and Venice Hills is 40. Presented by Southern Sierra Cyclists club.
San Diego Century Bicycle Tour — May 19, 2012 A 102-, 65- and 37-mile bike ride options are included in this year’s Encinitas Sports and Fitness Festival. Bicyclists make their way up Dos Pico Peak on the century ride for a 30-mile descent to the finish. Sponsored by city of Encinitas.
Pasadena Marathon – May 20, 2012 Pedal where they run. The 26-mile bike tour takes off at 6 a.m., a half hour before the runners. Presented by Kaiser Permanente. Check website for more information.
Tour de Marin — May 20, 2012 Meets at the Whole Foods Market in San Raphael for a 45-mile ride; includes food, swag bag and ride support. Presented by the Marin Country Bicycle Coalition.
Mother Lode Century — May 20, 2012 Three ride options through the foothills of the California gold country: Motherlode – 100 miles; Gold Nugget – 67 miles; and Gold Dust – 31 miles. Based in Lotus.

Great Western Bike Rally — May 25-28, 2012 The rally over Memorial Day weekend in Paso Robles features 25 bicycling routes for rides of 5 to 100 miles. Although most rides are unsupported, there is a supported century and metric century. Also bike swap, vendors, BBQ, etc. Participants to the 47-year-old event can tent camp or RV at the fairgrounds.
Spring Borrego Double Ordeal Ride – May 26, 2012 Slightly more than 200 miles through the desert, beginning in the southern California town of Borrego Springs. Presented by Mountain High Cycling.
Back to California century bike ride calendar
Back to Biking Bis

Recent Comments