Critical Mass is an event typically held on the last Friday of every month in cities around the world where bicyclists take to the streets en masse. While the ride was originally founded with the idea of drawing attention to how unfriendly the city was to bicyclists, the leaderless structure of Critical Mass makes it impossible to assign it any one specific goal.

We are not sure, opinions seem to differ. There are probably as many aims of CM as there are participants. Each individual comes there with his or her own idea of what it's about, and the sum of this makes up the Mass. We have no organisers and no planned routes.