Critical Mass is a mass bicycle ride that takes place on the last Friday of each month in cities around the world. Everyone is invited! No one is in charge! Bring your bike!
From Critical Mass
Events
Critical Mass
By Lisa Ratner
Stay in touch
Sign up for our free newsletter
More from Streetsblog San Francisco
Happy Independence Day
July 2, 2025
Inner Richmond Parents Fed Up with SFMTA Watering Down Safety
Mother of a child hit by a driver frustrated by city excuses for not taking daylighting and other safety measures seriously
July 2, 2025
