Safe streets are a human right
Everyone deserves to feel safe on the street, even and especially when they are not using a car.
Start here
Find us. Everyone is welcome.
We gather in the street, there are some announcements, then we ride together at a party pace. Bring lights, water, and whatever wheels help you move comfortably. The ride is typically 14 miles, 8–12mph, and always ends at the meeting spot.
Why we ride
Streets should move people.
People over machines
We challenge car-centered design and planning, and we demand better from our leaders.
Accountable city leadership
We want real traffic calming, protected bike lanes, actual bus rapid transit, and safe streets that protect people, not "traffic flow."
All on the same team
This is not bike supremacy. Pedestrians, mobility-device users, bicycles, e-bikes, skaters, scooter riders, transit riders, and more all deserve safe, comfortable streets with dignity.
Worldwide
You're riding with friends all over the world.
Critical Mass happens on every continent. Each city makes it its own, but the idea's the same. Ride together, demand safer streets.
North America
South America
Europe
Africa
Asia
Oceania
A few public ride pages
San Francisco
Chicago
Guadalajara
Montreal
Buenos Aires
London
Madrid
Vienna
Nairobi
Seoul
Melbourne
Ride guidelines
Keep it fun. Be kind.
Happy Friday!
Yell happy friday to everyone you see and ring your bell. Make friends, bring good energy.
Joy is paramount
It's a protest, but don't be aggressive. We're not here to replace car dominance with bike dominance. We want to be a friendly spectacle for our neighbors.
Share the streets
Respect pedestrians, especially around crosswalks. Respect buses and transit riders too. Public transit and pedestrian dignity are part of the future we ride for.
Respect your city
When we stop to party, take your trash with you, don't tag anything, and don't break shit. We don't want that kind of reputation.
Your experience matters
We want the ride to feel safe enough that anyone can speak up if something feels off.
Repair with kindness
If someone raises an issue with you, hear them out and don't double down. Just repair it.
Community calendar
More rides live on events.bike.
Denver Critical Mass is one ride in a bigger ecosystem. events.bike has a full calendar of more.
Want to lead a ride?
Anyone can. Critical Mass has no governing body, and Denver Critical Mass isn't a chapter of anything. We're just regular people helping the ride move together.
Plan and test the route first, then reach out at least one week ahead of time so we can coordinate details.