Celebrate 31 days of San Francisco biking! May is Bike Month! In honor of Bike to Work Day on May 9, San Francisco is celebrating with a full month of rides and events! Full Bike Month 2019 Calendar Give Back Improve your ride and your city when you volunteer with the San Francisco Bicycle Coalition. Social Events, Talks and Workshops Attend a bike-themed workshop or join us at a fun social event. Bike Rides Discover the Bay Area by bicycle! Options range from a family rides, social rides to infrastructure rides. There are rides for all interests and riding levels. Women Bike SF Women Bike SF is an SF Bicycle Coalition program that supports and encourages women, trans*, femme (WTF) riders in San Francisco. Join us at a coffee club or on a group ride.