Friday, October 24, 2025

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10 a.m.-12 p.m.

Fall Party @ Family Strengths Network

Family Strengths Network, Los Alamos​

​Bring your littles for outdoor games, pumpkin painting (B.Y.O.P.), cookie decorating, trick-or-treating, and a costume runway!! Two days and times to choose from (Oct. 25 and 26). 

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3-5 p.m.

Trick-or-Treat with LAMC 

Los Alamos Medical Center - First Floor and Back Lawn

The whole family is invited to stop by the local community hospital for delicious treats and a lot of fun! Many hospital departments will have themed booths and staff passing out candy to all who dare to enter. 

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4-6 p.m.

Trick-or-Treat on MainStreet

Downtown Los Alamos​

Central Ave. in downtown Los Alamos opens to pedestrian-only traffic and businesses and organizations from within and outside the district hand out candy to costumed kids and families. A free, annual Los Alamos tradition! 

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PEEC-a-Boo

Los Alamos Nature Center​

They'll be open for extended hours that day with sensory-friendly trick-or-treating, so come on by for candy between 4 – 6 p.m.! Free

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High-Tech Halloween at the Bradbury

Bradbury Science Museum​

From 4-6 p.m., visit during Trick-or-Treat on MainStreet for some spooky science fun! ​​​

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5-7 p.m.

Costume Climb

The Family YMCA​

Go climbing in your Halloween Costume at the Y! Ages 5-17. More info at www.laymca.org.

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7-8 p.m.

Aliens!

Los Alamos Nature Center, Planetarium​

Life on other planets: science fiction or science fact? Come for a spooky journey through our skies in search of friendly neighbors. $6 child/$8 adult/$20 family. More info at peecnature.org/events

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7-10 p.m.

Halloween Carnival

Los Alamos Teen Center​

Music, games, and lots of Halloween treats! Free and open to high school-aged teens. 

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Saturday, October 25, 2025​

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10 a.m.-12 p.m.

Fall Party @ Family Strengths Network

Family Strengths Network, Los Alamos​​

Bring your littles for outdoor games, pumpkin painting (B.Y.O.P.), cookie decorating, trick-or-treating, and a costume runway! Two days and times to choose from (Oct. 25 and 26). 

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10 a.m.-12 p.m.

Pumpkin Carving Party

Fuller Lodge​

First 60 pumpkins are free (one per family). Bring your own pumpkin or buy one from the LAHS Choir Pumpkin Patch onsite. Drop off your pumpkin by 4 p.m. for display at the Pumpkin Glow. losalamosartscouncil.org/pumpkin-glow

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11-11:40 a.m.

Black Holes

Los Alamos Nature Center, Planetarium​

Explore Black Holes in this full-dome planetarium film. $6 child/$8 adult/$20 family.

For more information: peecnature.org/events

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2-6 p.m.

Halloween Blood Drive

Los Alamos Teen Center​

Join the Los Alamos Teen Center for its Annual Halloween Blood Drive. The Teen Center and its partners at Vitalant will be hosting a fun, monster-themed donation event. Support the crucial need for blood donations in your
community and state-wide. Guaranteed to be more fun than your average blood drive!

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4-5 p.m.

Pumpkin Glow: Pumpkin Toddle Time 

Fuller Lodge​

For very young children/less sensory experience. 

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Dusk - 9 p.m.

Los Alamos Arts Council Presents:

Pumpkin Glow and Contest 2024

Fuller Lodge​

Drop off your pumpkin by 4 p.m. for display at the Pumpkin Glow.​ This event is free to the public.

For more information: losalamosartscouncil.org/pumpkin-glow

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7-9 p.m.

Haunted Trail

Pueblo Canyon Inn, 199 San Ildefonso Rd., Los Alamos​​​

Dare to brave the Haunted Trail at Pueblo Canyon! Local teens have transformed the forest path into a free, spine-chilling adventure. Wind your way through eerie scenes and startling surprises.

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Sunday, October 26, 2025

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9 a.m.-11:30 a.m.

Pumpkin Splash

Los Alamos County Aquatic Center

Join us for this fun Halloween event- Diving for pumpkins! Pumpkin retrieval begins at 10 a.m., by age group. Open swim until 11:30 a.m. 

Certain fees may apply. Limit 150 participants. www.losalamosnm.us/Events-Directory/Pumpkin-Splash

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