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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!

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More from Streetsblog San Francisco

Emergency Rally: Advocates Demand Gov. Newsom ‘Fund Transit Now’

All the major transit advocacy groups assembled Monday morning in downtown San Francisco to demand the city's former mayor (Governor Gavin Newsom) intervene and stop the cancellation of a vital $750 million state loan intended to keep the city moving

September 8, 2025
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