Hippie Hill 4/20 has been one of San Francisco's most recognizable counter-culture moments for half a century. The grassy slope on the eastern edge of Golden Gate Park, formally called Robin Williams Meadow since 2015, has been an informal cannabis gathering site since the late 1960s, and on April 20 it became the largest 4/20 event on the West Coast — until the city paused the official version. Here's the full picture: where the tradition came from, what's actually happening today, and how to plan a visit if you're in San Francisco around April 20.

One framing note up front: California public-consumption law treats cannabis like an alcohol open container — illegal in any public space, including all city parks. The 4/20 Hippie Hill gathering was historically a culturally tolerated exception for one afternoon. Outside that day (and outside any future officially-sanctioned event), consuming cannabis at Hippie Hill is illegal. Our consumption etiquette guide covers where consumption is and isn't legal in San Francisco.

What is Hippie Hill?

Hippie Hill is the colloquial name for the gentle slope on the eastern edge of Golden Gate Park, just inside the Stanyan Street entrance, a few minutes' walk from Haight-Ashbury. The official city designation is Robin Williams Meadow, renamed in 2015 in memory of the San Francisco-raised actor and comedian. The slope faces west toward the Conservatory of Flowers and the Music Concourse, gets afternoon sun on clear days, and has been a gathering place for musicians, drum circles, and counter-culture Sunday afternoons since the 1967 Summer of Love.

On any normal day, it's a quiet meadow. People walk dogs, picnic, sit with guitars, read on blankets. SF Rec & Park manages the space as part of Golden Gate Park's eastern edge. For the broader Golden Gate Park context — the de Young, the Conservatory, the Tea Garden, the western half — see our cannabis outdoor SF guide.

The 4/20 history at Hippie Hill

The April 20 cannabis gathering at Hippie Hill traces to the early 1970s, when San Franciscans started using the slope for informal 4/20 meetups. Through the 1980s and 1990s the gathering grew year-by-year — small enough through the Just-Say-No era to operate below the city's enforcement threshold, big enough by the early 2000s to draw thousands. After California legalized adult-use cannabis in 2018 (Proposition 64 — covered in our SF cannabis history piece), the city formally permitted the event and brought it under a festival framework with sponsors, a stage, and licensed cannabis vendors.

The 2017–2019 official era was Hippie Hill at its largest. Crowd estimates in those years ran 15,000 to 20,000 people; major California cannabis brands sponsored the event; bands played from an actual stage; cleanup crews ran for days afterward.

Why the official event was paused

Starting in 2022, the city declined to permit a formal Hippie Hill 4/20 festival. Three factors drove the pause:

• Cost. The official event ran on a sponsorship budget that became harder to assemble year-over-year, with the city carrying increasingly large public-safety and cleanup costs that sponsors weren't covering.
• Park damage. Heavy foot traffic on a single afternoon left the meadow torn up and required extensive turf restoration each spring. Drainage issues compounded the recovery cost.
• Neighborhood concerns. Cole Valley and Haight-Ashbury residents raised year-over-year concerns about parking, traffic, and the post-event spillover that lingered for days.

Without an official permit, no stage, no vendors, no festival footprint — and without the festival framework, on-site cannabis consumption returns to its baseline legal status: public consumption is illegal in California regardless of the day on the calendar.

What 4/20 looks like at Hippie Hill today

On April 20 in years without an official event, Hippie Hill still draws people — but at a fraction of the 2017–2019 scale. Think a few hundred to low thousands rather than tens of thousands. No stage, no vendors, no programming. SFPD presence varies by year. The vibe is closer to a large informal picnic than a festival.

The current-year status changes year to year. Before April 20 each year, San Franciscans check the SF Rec & Park calendar and Visit San Francisco's events page for whether the city has permitted a formal event. Local press coverage in early April typically confirms the situation.

If you visit Hippie Hill: practical notes

Whether you're going on April 20 or any other day, a few practical considerations:

• Public consumption is illegal in California. The Hippie Hill tradition has historically operated as a one-day cultural exception during sanctioned events. Outside an official permit, consuming cannabis in the meadow carries the same legal exposure as consuming on any other San Francisco sidewalk or park.
• Stanyan Street is the closest park entrance, an eight-minute walk from Haight Street. The Conservatory of Flowers is a five-minute walk further west, and pairs naturally with a Hippie Hill afternoon.
• Park while you can — Stanyan, Fell, and the Haight have limited street parking on any given day, and on April 20 it disappears entirely. Muni's 5-Fulton, 7-Haight, and 33-Ashbury all run within a block of the park's eastern edge.
• Bring water, snacks, sunscreen, and a blanket. The fog can roll in fast, especially in the late afternoon.

What to pick up for a Hippie Hill day

If you're picking up before a visit (and consuming somewhere legal — private residence, hotel room, or licensed lounge — before heading to the park), the formats that work for a slow afternoon outdoors:

• Low-dose edibles in 2.5 mg or 5 mg pieces. Consumed 45 to 60 minutes before walking into the park, the dose carries through a 2-to-3-hour afternoon at gentle elevation. Sustained mild euphoria pairs well with the slow-pace, lay-on-the-grass nature of Hippie Hill.
• Single pre-rolls — only useful for an officially-permitted event year, or post-park at a private space. Sealed, unopened pre-rolls travel in California-compliant exit packaging legally.
• Skip vapes, large flower jars, and concentrates for a park-adjacent day. They're either prohibited at the venue or harder to manage outdoors.

Two California Street Cannabis shops are reasonable pre-Hippie-Hill stops. Our 235 Clement St shop in the Inner Richmond is a 12-minute drive across the park; our Nob Hill shop at 1398 California St is a 15-minute drive via Fell Street. Both stock the low-dose edibles that pair best with an outdoor afternoon.

Frequently asked questions

Is the 4/20 Hippie Hill event happening this year?

The official Hippie Hill 4/20 festival has been paused since 2022 and current-year status changes annually. Before April 20, check the SF Rec & Park calendar, Visit San Francisco's events page, and local press for the most recent status. In years without an official event, the meadow is still legally a public park subject to California public-consumption rules.

Where exactly is Hippie Hill in Golden Gate Park?

Hippie Hill / Robin Williams Meadow is on the eastern edge of Golden Gate Park, just inside the Stanyan Street entrance between Haight Street and Fulton Street. The slope faces west toward the Conservatory of Flowers. From the Haight-Ashbury intersection, it's an eight-minute walk.

Can I legally consume cannabis at Hippie Hill?

Public cannabis consumption is illegal in California, including in all San Francisco parks. The historical 4/20 Hippie Hill gathering operated as a culturally tolerated one-day exception, and during years with an official permitted event, designated cannabis vending and consumption was legal under the festival framework. Outside those circumstances, consumption at Hippie Hill carries the same legal exposure as at any other public park.

Plan your visit

Hippie Hill is worth a visit any sunny afternoon — slow, gentle, rooted in San Francisco counter-culture history. If you're planning a 4/20 visit, confirm the year's event status first. For the broader Pillar 1 cultural index — neighborhood guides, food pairings, art and music, outdoor lifestyle, the city's cannabis history — see our SF cannabis culture guide.

Compliance

For use only by adults 21 years of age and older. Keep out of reach of children. Cannabis can impair concentration, coordination, and judgment. Do not operate a vehicle or machinery under the influence.

California Street Cannabis at Sansome | CA DCC License C10-0001117-LIC | 615 Sansome St, San Francisco, CA 94111. License status verifiable at the California Department of Cannabis Control.

Visit San Francisco maintains the city's official tourism information.