Chicago Critical Mass Route Archive
Chicago Critical Mass (and similar) route map flyers retrospective.
Assembled from website archives, post-ride reviews, and personal files. Not intended as a perfect historic archive, these have been optimized (rotated, cropped, arranged, contrast adjusted, and compressed) for mobile displays and research use. ANYONE with more CCM (and other local rides) map flyers PLEASE CONTACT ME! Also try these searches for Critical Mass PHOTOS and VIDEOS. Visit for an even more comprehensive flyer archive including others local masses and big rides.