The following groups publish regular ride calendars.

Santa Rosa Cycling Club Calendar of Rides and Events - covers all of Sonoma County

Petaluma Wheelmen Calendar & Ride Info

Bay Area Bicycle Clubs and Teams

Santa Rosa Cycling Club

Almaden Cycle Touring Club
Berkeley Bicycle Club
Bike-Cal an up-to-date list of organized bicycle rides in Northern California
Bike Monkey
Eagle Cycling Club
Grizzly Peak Cyclists
Fremont Freewheelers Bicycle Club
Marin Cyclists
NorCal Velo
Oakland Yellowjackets Bicycle Club
OrganicAthlete
Petaluma Wheelmen
Team NorCal Bike Sport
Sonoma Valley Cyclists
Team Swift
Tuesday Night Twilights
Valley Spokesmen Bicycle Touring Club
Women's Mountain Bike & Tea Society (WOMBATS)
Western Wheelers