Halloween lands on a Saturday this year, which spreads Marin's celebrations across two days. Here's what's on, according to the Mill Valley Briefing's Halloween roundup, Visit Marin's event calendar and the San Rafael Chamber of Commerce.

Friday, Oct. 30

  • Trunk-or-Treat, Mill Valley Community Center (180 Camino Alto), 4 to 6 p.m. Free, with decorated car trunks and food trucks in the main lot. Walk, bike or park off-site. A ticketed Brian Scott Halloween magic show follows from 6:15 to 7 p.m. in the Cascade Room.
  • A Spooky Night at the Cabin, Tam Valley (60 Tennessee Valley Rd.). Family pumpkin carving from 5 to 6:30 p.m. ($20 per carver), then a guided night nature hike into Fernwood Cemetery from 6:30 to 8 p.m. ($5, ages 12 and up with an adult).
  • Scary at the Berry, Strawberry Recreation District (118 E. Strawberry Dr.), 5 to 8 p.m., with carnival-style games and trick-or-treating. Register in advance.
  • The Addams Family musical opens at the Throckmorton Theatre at 7 p.m. and runs through Nov. 15.

Saturday, Oct. 31

  • Halloween Sing & Stomp, a Mill Valley Library session for toddlers and young kids on the Sweetwater Music Hall stage, 11 a.m. Free.
  • Trick or Treat in Downtown Novato, 11 a.m. to 2 p.m., at downtown businesses, per Visit Marin.
  • Eldon Brown Band, a Halloween matinee at the Depot Cafe & Bookstore on the Mill Valley plaza, 4 to 6 p.m., weather permitting.
  • Homestead Halloween, 5 to 7 p.m., centered on Volunteer Park in Homestead Valley, known for full-size candy bars.
  • Halloween party at the San Rafael Elks' Boyd Mansion, 1312 Mission Ave., doors at 7 p.m. The Pop Fiction band plays the ballroom at 8 p.m. and a DJ is on the terrace. Tickets are $30 in advance and $35 at the door. No outside food or drink, and no pets except service animals.

Mill Valley street closures

From 6 to 10 p.m. Saturday, Mill Valley police will close Sycamore Avenue from Park Avenue to Valley Circle, and Locust Avenue from Walnut Avenue to Sycamore Avenue, for trick-or-treaters around Sycamore Park. If you live inside the zone and need your car that night, the Briefing advises parking on a side street outside the closure before 6 p.m.

Sunday, Nov. 1

The O'Hanlon Center for the Arts in Mill Valley hosts a Día de los Muertos gathering from 3 to 4:30 p.m., the Briefing reported.