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San Francisco Critical Mass (Last Friday of the Month)

Every Last Friday
Friday, July 31, 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, July 31, 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   2026 Thrive City Pickleball Tournament (July 31-Aug 1)  FREE*
*Free to watch. $75 per player ($150 per team) to participate in doubles. Free to watch.
11:00 am   Unique Derique (Kids’ Show) at Yerba Buena Gardens Festival 2026  
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
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   $1 Drink Fridays: “Battle of the Decades” DJ Party (North Beach)  FREE*
*Free admission with RSVP on Eventbrite
6:00 pm   20th Annual “Music on the Square” Free Concerts Every Friday (Redwood City)  FREE*
*FREE! ALL AGES!
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   “Golden Gate Comedy Night” SF’s Most Intimate Comedy Club  FREE*
*Free with RSVP. 21+
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
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
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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