Critical Mass

9:33 PM PDT on April 24, 2011

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!

Aaron Bialick

Aaron was the editor of Streetsblog San Francisco from January 2012 until October 2015. He joined Streetsblog in 2010 after studying rhetoric and political communication at SF State University and spending a semester in Denmark.

Critical Mass

Stay in touch

More from Streetsblog San Francisco

Oakland Celebrates First Protected Intersection in Chinatown

Headlines, February 25

Kansas City is Again Expanding Its Once-Mocked Streetcar

Oakland Postal Worker Yells ‘Move’ and Nearly Runs Down a Man Walking his Dog

Headlines, February 24

What It Would Take to Map Every Sidewalk In Your State