MASS 
 Subject to Change - Fri 2/27/1998 6p
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Chicago Critical Mass
Subject to Change
Fri Feb 27th 1998 6p

Critical Mass is a very large group bike event, gathering in Chicago the last Friday of every month for 15+ years. Leaves Daley Plaza downtown (50 W Washington St) around 6pm.
Contact: Unknown
ChicagoCriticalMass.org
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8/31 2:35a Re: *CCM* The August 2015 ride Thanks for the pics. And a vid this time, confirms my impression that w...
CCM Electronic Sparklers...
CCM @ILBicycleLaw @ARTCRANK or have him at a Kidical mass would be awesome
CCM I was thinking the same thing
CCM Update: Universe - Chicago Critical Mass
CCM Congrats to @JArriets34 on your no hitter against the @Dodgers last night. #bikeChi @Cubs #chicago
CCM RT @aka60643: Getting a #bike vandalized at train station isn't quite as bad as theft but there's still a feeling of ...
CCM RT @ARTCRANK: Never gonna make us Cubs fans, but we can get behind this. #bikechi
CCM Re: [*CCM*] The August 2015 ride Thanks for the pics. And a vid this time, confirms my impression that we were a coup...
CCM How Political Leadership Makes City Streets Bikeable
CCM Self-Driving Buses Could Really Reinvent Transportation Systems
CCM RT @HistoryInPics: A Couple of Foxy Ladies Riding Their Bikes in the 70s.
CCM RT @Btfrench: Check out the Orange moon tonight. Incredible!
CCM RT @VeganPedicab: Bike Valet up & running at the @LSFarmersMarket. Park w/ us & grab some @amazingkaleburg & @botbake...
CCM RT @DerailleurZine: Please donate blood at @LifeSourceOrg using @ChiCritMass group code CM99. If you're able, please ...
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