Critical Mass
- When
- September 30, 2011 5:30 pm
- Where
- "Pee Wee" Herman Plaza (foot of Market Street), SF
- More Info
- http://sfcriticalmass.org/
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!
