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San Francisco Critical Mass (Last Friday of the Month)

Every Last Friday
Friday, September 25, 2026 - 6:00 pm to 9:00 pm | Cost: FREE
Embarcadero Plaza | 1 Market Street, San Francisco, CA
San Francisco

Free / Learn More

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, September 25, 2026

9:00 am   Japanese Tea Garden’s Free Admission Hour (Golden Gate Park)  FREE*
*Free from 9-10am on Monday, Wednesday and Friday; otherwise non-resident admission is $12 - $16 depending on the season. San Francisco residents are always free with valid ID
10:00 am   Maker Faire Bay Area 2026 (Sept. 25-27)  $45*
*Tickets start at $45 | Get 25% Off Tickets with code BAS
11:00 am   Dread Scott: The Body Politic (YBCA)  FREE*
*$10 regular admission, discounts for seniors and students
11:00 am   “Pay-What-You-Can” Taco Day at SF’s Tato (Every Friday)  FREE*
*Every Friday pay anywhere from $0 up to $10. When a customer pays the full price of $10, TATO will give a free meal to someone in need in The City. Please note promotion might end at any time
12:00 pm   Dolly Parton Day 2026: Free Outdoor Fest at Union Square (SF)  FREE*
*No RSVP required
4:00 pm   SF’s “Visitacion Valley” Night Market + Block Party (2026)  FREE
5:00 pm   “Friday Nights at OMCA with Off the Grid” Block Party + DJs (Oakland)  FREE*
*Most outdoor activities and entertainment is free and open to the public from 5-9pm. Regular Museum applies to enter the galleries
5:00 pm   Walnut Creek Oktoberfest: Free Festival, 21+ Chillgarten + Kids Zone (Sept. 25-26)  FREE*
*This event is FREE ADMISSION. RSVP appreciated. Drink tickets, glasses, and kids zone passes are available for purchase on-site. Please note, the ticket booths are CASHLESS.
5:00 pm   SF’s Huge “Sunset Night Market” (Sept. 25)  FREE
5:00 pm   $1 Drink Fridays: “Battle of the Decades” DJ Party (North Beach)  FREE*
*Free admission with RSVP on Eventbrite
5:00 pm   Sunset Night Market: The Mid-Autumn Moon Festival  FREE*
*Free
5:00 pm   “Union Square Dances” Free Outdoor Friday Night Dance Party (SF)  FREE
5:30 pm   Most Best Open Mic  FREE*
*RSVP | Donations Accepted
6:00 pm   “Sundown Cinema” SF’s Outdoor Movie Night in the Park 2026  FREE
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
7:00 pm   SF’s HellaSecret “Crazy Funny Asians” Friday Night Comedy Showcase (7p + 9p)  FREE*
*Free tickets, but RSVP Required. Donations ($5-$10) greatly appreciated. Otherwise, $15 adv / $20 door tickets also available
7:00 pm   Yerba Buena Illuminated: Free 95-Ft Art Projection on Market Street  FREE
7:00 pm   Bookshop Comedy  FREE*
*https://www.simpletix.com/e/book-shop-comedy-tickets-265295
7:00 pm   Directions In Stereo  FREE*
*n/a
7:00 pm   “Golden Gate Comedy Night” SF’s Most Intimate Comedy Club  FREE*
*Free with RSVP. 21+
7:15 pm   Free ‘Project Hail Mary’ Outdoor Movie Night (Proxy SF)  FREE
8:00 pm   “The Stoner Comedy Jam” Friday Nights (SF)  FREE*
*Free with RSVP (21+ with Valid ID) - One item minimum purchase per person required
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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