Critical Mass is an international event which takes place in more than 400 cities around the world, each last Friday of each month, when cyclists, spontaneously and in massive way, go riding through the streets of their city, usually busy with cars.

Critical Mass concentrates on the right to use streets in an alternative way, not only as simple car storage and movement places. It puts the stress on lifestyle deterioration, starting from air and acoustic pollution levels which are created by engines.

Critical Mass takes place in many world cities and it’s always different, because of variation in size, traffic laws and police and motorists response from city to city.

Critical Mass is an idea, an event, an attitude…. there’s no leader and no organization… it’s simply made of the people joining the ride, there’s no official flyer, but everyone try to build its own to distribute all along the always improvised and never pre-established course of the CM.

For news and infos about Critical Masses around the world visit World Wide Critical Mass Hub, which tries to be the most up-to-date source about the movement, and even How to Start a Critical Mass Ride for those who want to start a CM in their city.

In Rome:
Critical Mass Roma – each last Friday of each month starting from Fori Imperial, pole 27, 6.30 pm

In Italy: Critical Mass Planet