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Critical mass Barcelona
Bike everyday. Celebrate once a month! First Friday of every month 20:00 Arc de Triomf

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Guidelines and Recommendations

The key to making Critical Mass work is the full involvement of all participants, and above all, remembering that:

  • We are a mass; this must always be kept in mind so that no cyclists are left behind and no car or motorcycle can weave between the bikes, otherwise our safety could be seriously compromised.
  • The pace must be fluid. This is related to the previous point, because if someone gets too far ahead (as if it were a race) or stops constantly, the mass will eventually break up and hinder the flow of cyclists.
  • It's a celebration; having fun is mandatory, and only smiles are allowed. It's not a race or a place to attack cars. See others as potential cyclists, talk to drivers, explain what you're doing and why cycling is so beneficial. Promoting good vibes and fun is much more effective than puncturing tires or denting hoods.
  • Our individual creativity is our best weapon: we can make flyers, bring balloons, whistles, drums, music, costumes, banners, invent battle cries or songs, and above all, spread the word about Critical Mass.
  • Always respect traffic lights, but when riding in a group, we will be considered a single vehicle and therefore have priority. If we enter a roundabout or pass a traffic light, priority is maintained until the last cyclist in the group. (more information)
  • Block adjacent streets when the previous point occurs, that is, when passing through an intersection and the traffic light turns red. To avoid splitting the Critical Mass and prevent cars from cutting in or cutting across, some Critical Mass participants will position themselves on the aforementioned streets to prevent any motorized vehicles from cutting in.
  • Occupy all lanes except public transport, whenever possible.
  • Any form of transportation that promotes the philosophy of critical mass is welcome. You can come by bike, running, skateboarding, rollerblading… or even flying if you can!
  • Above all, respect pedestrians, who have the right of way. At crosswalks with amber lights, you must yield to pedestrians.

And remember, this is a festive movement where smiles prevail and violence is not tolerated.

WE DON'T BLOCK TRAFFIC, WE ARE TRAFFIC!

Controversy

A key aspect of Critical Mass is that it doesn't require authorization. When the police learn about the event, they insist that a permit is necessary. The point is that cycling is a right, not a privilege; it's a cycling celebration. So what if a lot of us get together? All the better, since every day countless cars are stuck in endless traffic jams and the police don't ask for a demonstration permit.

It's important to know the traffic laws. Critical Mass is very likely to attract a considerable number of cyclists, and that will attract police attention. Above all, you need to know the regulations to understand what you can and can't do. You need to be informed and know your rights as defined by the traffic code regarding bicycle traffic in your city (traffic manual).

Another controversial point is the extent to which this bike ride blocks traffic. Be patient, be courteous, and minimize any inconvenience to others, as contrary attitudes don't work in our favor and give a bad image to cycling as a means of transport.

It's about asserting our right to use the road, but if possible, it's advisable to leave one lane free for cars. Occupying all the lanes all the time will only attract the attention of the police sooner. On the other hand, it's a way to gain goodwill and show that we're not out to cause trouble.

It's important to remember that Critical Mass is a celebration of cycling, a demonstration of the bicycle as a means of transport. Citizens need to start paying attention to the bicycle not only from a leisure perspective but also as a means of transport—a comfortable vehicle for getting around, which offers the benefit of exercise and doesn't pollute or make noise at all.

Next critical mass

Friday, 1 May 2026 - 20:00
Fri, 1 May 2026 - 20:00
Place: Arc de Triomf

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First Friday of every month. 20:00 at Arc de Triomf