Marin County, California
Black Sands Beach
Black Sands Beach is a dark-sand beach in the Marin Headlands portion of the Golden Gate National Recreation Area, named for the distinctive dark volcanic and serpentine rock that erodes into the sand.
- Day use
- LGBTQ-friendly
- Hike In
About this place
Black Sands Beach is a dark-sand beach in the Marin Headlands portion of the Golden Gate National Recreation Area, named for the distinctive dark volcanic and serpentine rock that erodes into the sand. The beach is reached via a short but steep trail from the Conzelman Road / Battery Spencer area and is a different location from Rodeo Beach (about 2 miles to the west) — both are in the Marin Headlands, but serve different communities of regulars.
Black Sands has an informal C/O tradition with deep roots in the San Francisco gay community — the Marin Headlands above are on the Golden Gate Bridge north approach, and the beach below has long been a clothing-optional destination for Bay Area LGBTQ+ outdoor visitors. The setting is dramatic: sheer cliffs, cold Pacific surf, the Golden Gate visible to the south, container ships passing at close range through the strait.
The GGNRA technically prohibits nudity, but enforcement at Black Sands has been consistently minimal due to the beach's self-selecting access and its established community character. The crowd tends to be male-dominated and LGBTQ+-friendly — a San Francisco institution that has persisted across decades of changing policy environments.
Visitor notes
Contributed by ClothingOptional.org Editorial Team
Who visits
San Francisco LGBTQ+ community, Marin naturists, Bay Area visitors who know the spot. Historically a gay beach with a strong regular community.
How to find it
From the north end of the Golden Gate Bridge, take Conzelman Road west into the Marin Headlands. Look for the informal pullout near Battery Spencer / the cliffs above the beach. A steep trail leads down to Black Sands. GPS: approximately 37.825°N, 122.513°W.
Things to watch out for
The trail down is steep and unmaintained. Northern California sneaker waves — do not stand in the water's edge with your back to the ocean. The beach disappears at high tide. Cold Pacific water and strong coastal winds are constants.
Last updated
Etiquette & ground rules
Long-established LGBTQ+-friendly C/O community with its own informal culture. Photographing other visitors without consent is not accepted. The beach has a self-policing character that regulars maintain.
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