Home > List of rides > United States > Denver, Colorado Look up on Google / Wikipedia Would like to ride. Is critical mass still in effect in Denver? I am wondering this as well. Most of the info I can find dates back to 2007-ish. Anyone know? Retrieved from "https://criticalmass.fandom.com/wiki/Denver,_Colorado?oldid=13824" Categories: United States Ride locations Colorado Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.