Halloween in Mill Valley

🐶 4th Annual MV Howl-O-Ween Dog Costume Contest, Mill Valley Lumber Yard (129 Miller Ave), 10:30–11:30am. Costumed canines parade the outdoor courtyards with prizes awarded for the most creative outfits. Free to spectate and participate.

Mill Valley

🚗 🍬 Halloween at the Center: Trunk-or-Treat & Magic Show, Mill Valley Community Center (180 Camino Alto). Trunk-or-Treat runs from 4:00 to 6:00pm as a free outdoor gathering in the main parking lot featuring a fleet of festively decorated vehicle trunks handing out candy, alongside local food trucks. Attendees should walk, bike, or park off-site due to parking lot closures. The Brian Scott Halloween Magic Show follows from 6:15 to 7:00pm inside the Cascade Room, requiring advance tickets through City of Mill Valley Recreation / Eventbrite.

🎭 The Addams Family Musical (Opening Night), Throckmorton Theatre (142 Throckmorton Ave), 7:00pm. Opening performance of the Broadway musical comedy, beginning an extended run through November 15.

Tam Valley

🎃 🦉 A Spooky Night at the Cabin & Fernwood Cemetery Hike, Tam Valley Cabin (60 Tennessee Valley Rd) & Fernwood Cemetery. Family pumpkin carving, tool access, cider, treats, and storytelling with Ane Carla Rovetta runs from 5:00 to 6:30pm ($20 per carver). Bats, Owls, and Ghosts, Oh My! guided nighttime nature hike into adjacent Fernwood Cemetery led by naturalists Mia Monroe and Steffen Bartschat alongside Funeral Director Alicia Jackson runs from 6:30 to 8:00pm ($5; ages 12+, youth must be accompanied by an adult). Guests return to the Cabin afterward for hot cider and illuminated pumpkin displays.

Strawberry

🎃 2026 Scary at the Berry, Strawberry Recreation District (118 E. Strawberry Dr.), 5:00–8:00pm. Annual community festival featuring carnival-style seasonal games, family entertainment, and trick-or-treat activities. Advance registration is open through SRD.

Morning & Afternoon (Kids, Music & Pre-Game)

🎶 Mill Valley Library Halloween Sing & Stomp, Sweetwater Music Hall (19 Corte Madera Ave), 11:00am. Special Halloween morning edition of the library’s movement and acoustic music session hosted live on the Sweetwater stage for toddlers, young kids, and costumed caregivers. Free admission.

🎸 Eldon Brown Band (Halloween Matinee), The Depot Cafe & Bookstore (87 Throckmorton Ave), 4:00–6:00pm. Live roots and classic grooves outdoors on the Downtown Plaza for families and early costumed trick-or-treaters (weather permitting).

Dusk Neighborhood Trick-or-Treating & Street Closures (5-10pm)

🍫 Homestead Halloween, Volunteer Park (Melrose Ave & Linden Ln, Homestead Valley), 5:00–7:00pm. Neighborhood tradition featuring spooky park decorations, community socializing, and full-sized candy bars for trick-or-treaters.

🍬 🚫 Sycamore Park Trick-or-Treating Street Closures, 6:00–10:00pm. The City of Mill Valley and Police Department will close key residential corridors to thru traffic to protect pedestrian trick-or-treaters: Sycamore Avenue closed from Park Avenue to Valley Circle, and Locust Avenue closed from Walnut Avenue to Sycamore Avenue. Vehicles needing entry or exit after 6:00pm must park on adjacent side streets outside the closure zone beforehand, as MVPD officers will be stationed throughout the neighborhood to control traffic and maintain emergency access.

Late-Night Music & Dance (Adults / All Ages)

🎺 🧟 Soul Ska Halloween Party with DJ Troubleman, Sweetwater Music Hall (19 Corte Madera Ave), 8:00pm (Doors: 7:00pm). Live high-energy 9-piece ska, funk, and reggae costume bash. All ages.

🍸 🎧 A Halloween Dance Party with DJ MykeOne, Corner Bar (106 Throckmorton Ave), 9:30pm. Late-night downtown dance party with AlmightyDjs. Costumes encouraged; no cover charge.

🏵️ 5th Annual Día de los Muertos / Day of the Dead Celebration, O'Hanlon Center for the Arts (616 Throckmorton Ave), 3:00–4:30pm. Community gathering featuring traditional altar installations, remembrance ceremonies, and reflective art.

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