MASS 
 Charybdis, Gina - Fri 9/29/2000 6p
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Chicago Critical Mass
Charybdis, Gina
Fri Sep 29th 2000 6p

Critical Mass is a very large group bike event, gathering in Chicago the last Friday of every month for 20+ years. Leaves Daley Plaza downtown (50 W Washington St) around 6pm.
Contact: David Z.
Facebook.com/ChicagoCriticalMass
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