San FranciscoCycling

Organization

San Francisco Critical Mass

Monthly last-Friday mass bike ride. No leader.

Adults riding bicycles together on a San Francisco hill street at dusk.

Lifestyle image for cycling. Not a photograph of a named club.

To attend
Just show up
When
Last Friday, next Oct 30, 5:30 PM PDT
Cost
No fee listed
Where
Embarcadero Plaza, foot of Market Street

San Francisco Critical Mass is for anyone with a bike. No one is in charge. It is the last Friday of each month. The next ride on the official site, checked October 5, 2026, is October 30th, 2026, 5:30pm PDT, at Embarcadero Plaza (foot of Market Street). No fee is listed on the official Critical Mass site. The site says everyone is invited. Secondary event listings describe it as free; those are not the fee authority. Bring a bike and show up. There is no registration and no leader. The route is not pre-published. Roll time after the 5:30 PM gather is informal; secondary listings often say the ride is about 6:30 PM.

Last Friday of each month. Next ride: October 30th, 2026, 5:30pm PDT, at Embarcadero Plaza (foot of Market Street). Confirmed on https://www.sfcriticalmass.org/ checked October 5, 2026. Route is not pre-published. Roll time after the 5:30 PM gather is informal.

Anyone with a bike. No one is in charge.

No fee is listed on the official site. Do not change that to Free because a secondary listing says free. The route is not pre-published. The gather is 5:30 PM PDT. A later roll time is informal.

How to join

Bring a bike and show up at Embarcadero Plaza. There is no registration and no leader.

SF Critical Mass

Opens the organizer’s site. Sparks Fitness does not take RSVPs.

Where

Embarcadero Plaza, foot of Market Street

Embarcadero Plaza, San Francisco, CA

Open in maps

Sources

Full San Francisco directory