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San Francisco Critical Mass (Last Friday of the Month)

Every Last Friday
Friday, March 27, 2026 - 6:00 pm to 9:00 pm | Cost: FREE
Embarcadero Plaza | 1 Market Street, San Francisco, CA
San Francisco

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San Francisco Critical Mass (Last Friday of the Month)

SF Critical Mass

Critical Mass is a mass bicycle ride that takes place on the last Friday of each month in San Francisco. Meet and 6pm, ride at 6:30 pm from Embarcadero Plaza (foot of Market Street) and in cities around the world. Everyone is invited. No one is in charge. Bring your bike.

Please Note: Critical Mass tends to practice extreme bike power by taking to the streets and riding in the car lanes causing endless annoyance to motorists.

In San Francisco especially, this event can get HUGE. Consider this is fair warning to stay away from driving in the downtown SF area on the last Friday of every month.

Upcoming San Francisco Critical Mass (Last Friday of the Month) Events

Disclaimer: Please double check event information with the event organizer as events can be canceled, details can change after they are added to our calendar, and errors do occur.


Cost: FREE
Categories: *Top Pick*, Bike It, In Person, San Francisco, Walks & Tours
Address: 1 Market Street, San Francisco, CA

Other Events on This Day

Friday, March 27, 2026

4:00 pm   SF’s 2026 “Men Having Babies” Surrogacy Conference & Expo (March 27-29)  $40*
*The cost is $40 per person for prospective parents, and includes meals and receptions. $30 for MHB supporting members.
4:00 pm   San Jose’s Brand New “365 Night Market” w/ 50+ Food Vendors (March 27-28)  *
*Free entry
7:00 pm   “Rush Hour Comedy Night” w/ SFs Best Black & Asian Comedians (The Function)  FREE*
*RSVP Required
7:00 pm   “HellaSecret” Speakeasy Comedy Show & Cocktail Night (Oakland)  FREE*
*Limited free tickets with code FUNCHEAP (donations appreciated). Otherwise use code FUNCHEAP5 for $5 off early bird and general admission tickets
8:00 pm   Monaleo: Who Did The Body Tour (Regency Ballroom)  $39.40
8:00 pm   $5 Off: “The Confessional” SF’s Wild “Sins & Secrets” Improv Comedy Show  $11.94*
*$5 off with secret code FUNCHEAP (normally $17.12) No added ticketing fees. No Drink Minimum
9:00 pm   $5 Off: “Your Fucked Up Relationship” Live in SF (Every Friday & Saturday)  $16.37*
*$5 off with secret code FUNCHEAP (normally $21.49) No added ticketing fees. No Drink Minimum
9:00 pm   SF Neo-Futurists “The Infinite Wrench” (30 Plays in 60 Minutes, every Fri & Sat)  $18.60*
*$13 + roll of a die at the door, OR $16 online. Group discounts—bring friends!
10:15 pm   $5 Off: “The Ritual” Comedy Show in The Mission (SF)  $12.16*
*FUNCHEAP discount code for $5 off
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