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Dirt Circus - San Franscisco

Name: Dirt Circus - San Franscisco
Start: 2025-06-15
End: 2025-06-15
Location: SoMa

SoMa, United States • 15 Jun 2025

Dirt Circus - San Francisco is a free community running event held in San Francisco, California, celebrating local trail running culture. Organized by UltraSignup, this one-day festival features a social group run with options of 3.2 or 4.5 miles, welcoming all paces and encouraging participants to wear circus-themed costumes. The event fosters camaraderie among runners, race directors, coaches, and local running brands. After the run, attendees enjoy a pancake breakfast, an expo with vendors like adidas TERREX and Altra, and a raffle with prizes including race entries and running gear. The event highlights local races, run clubs, and businesses, creating a lively and inclusive atmosphere under the metaphorical "big top." Visit the organization's website for the most recent information.

United States California SoMa

Race information

Registration

4 mi

4.5mi

3 mi

3.2mi

Visit the organization's website for the most recent information.

Trail runs nearby

Saturday Dec 20

Woodside Ramble

Experience scenic single track trails under redwood canopy and along ridgelines at the Woodside Ramble. Distances from 10K to 50K offer a challenging, festive trail day; the event is sold out.

Saturday Dec 27

Brazen New Year's Eve

Ring out the year with Almost New Year's Eve at scenic Lake Chabot in Castro Valley on 12/27/25. Trail routes for runners, walkers and hikers include 5K, 10K and half marathon distances with free post race photos.

Thursday Jan 1

Brazen New Year's Day

Celebrate New Year’s Day with scenic loop races at Lake Chabot, from half marathon to 10K, 5K and remote options on rolling trail terrain. Enjoy free race photos and earn a New Year Mega Medal if you also ran Brazen New Year’s Eve.

Sunday Jan 18

Crystal Springs (Winter) Trail Run

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Run through redwood forests at Huddart Park with distances from a short 8K to a challenging 50K, plus a free kids dash. Expect scenic single track routes, friendly aid stations and a welcoming trail community.