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Halloweekend Oct 27 - 29, 2023


Trick-or-Treat on MainStreet 

Friday, Oct. 25, 2024, Central Ave. closes to pedestrian-only traffic and local businesses and organizations hand out candy to costumed families!

Businesses must register to distribute candy at their storefront or to set up a separate booth. 

Once registrations are in, we will contact you to let you know where to set up (you must provide your own table and chairs).

The 2024 schedule is not yet available, but for an example of activities, view the 2023 events below.



Halloweekend in Los Alamos, New Mexico





Friday, October 27, 2023

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. 27 and 28). 

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. 

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! 

Halloween Fun at the Nature Center

Los Alamos Nature Center

Stop by the Los Alamos Nature Center during your Trick-or-Treat on MainStreet fun on Friday, October 27. They'll be open for extended hours that day, so come on by for candy between 4 – 6 p.m.! 

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! 

Sensory Friendly Halloween 

Las Cumbres of Los Alamos 

From 4-6 p.m., visit Las Cumbres for face painting, candy launching, and other fun activities! 

6-7 p.m.

Halloween Astronomy

Los Alamos Nature Center

After gathering candy downtown, visit the Los Alamos Nature Center planetarium! Explore historical traditions of Halloween and their connections to astronomy and Ireland at this guided planetarium program. Admission is $8 for adults and $6 for children.

Find out more here!

Saturday, October 28, 2023


9 a.m.

Barranca Mesa Elementary Trick-or-Trot 5K 

Barranca Mesa Elementary School

Get the whole family moving during the Barranca Mesa Elementary School PTO's 5K Race or 1 Mile Fun Run! The 1-miler begins at 9 a.m., and the 5K starts at 9:30 a.m. 

Registration: adults with a shirt $35, kids 5-12 years with a shirt $20, adults no shirt $20, kids no shirt $10. 


Register in advance here or same-day registration is also available. More information

9 a.m.-3 p.m.

36th Annual Fall Craft Fair 

Crossroads Bible Church

This annual craft fair features gifts and artwork from a variety of vendors, food for purchase, and a quilt raffle.

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. 27 and 28). 

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. 

4-9 p.m.

Pumpkin Glow Drop-off and Event

Fuller Lodge Lawn

The Los Alamos Arts Council's annual pumpkin glow returns to the historic, Fuller Lodge lawn this fall. With a carving party, a scavenger hunt, and all things pumpkin-y!

4-6 p.m. - Drop off your pumpkin for display.

5 p.m. to dusk - Pumpkin Toddle (time for very young children, prior to crowds.

Dusk-9 p.m. - Pumpkin Glow and Carving Contest

This event is free to the public. For more information:

6:30-8 p.m. 

Ghost Hunt

Los Alamos Little Theater

Join us on the Saturday before Halloween for a Ghost Hunt in the historic (and spooky) Los Alamos Little Theatre!

The Los Alamos Department of Public Utilities (DPU) is launching it's new energy conservation and efficiency tool: A thermal camera! These cameras can be borrowed from the Los Alamos Public Library starting November 1st and are useful tools to check heat loss around your home--just in time for the change in weather.

This event is free to the public. Please register in advance.

7-10 p.m. 

Halloween Party @ LATC

Los Alamos Teen Center 

Join the teen center youth mobilizers for a spooky good time. There will be music games and lots of Halloween treats! This event is free and open to all high school-aged teens.

Sunday, October 29, 2023


12-2 p.m.


Pet Pangaea 

Do you have room in your heart and home for a new feline family member? Visit Pet Pangaea to meet some fantastic felines available for adoption! Thank you to Felines & Friends New Mexico for making the trek to Los Alamos to hold this adoption event.

1-2:15 p.m.

Zumba Masterclass with Costumes

Los Alamos YMCA Gym 

Get your sweat on Halloween style! Join instructors Warapha and Natalie for some Zumba fun. Proceeds benefit The Family YMCA's Scholarship Fund. 


$10/in advance or $15/at the door. Contact Los Alamos Family YMCA for more info.

10 a.m.

Pet Pangaea Halloween Costume Parade

Ashley Pond Stage

It will be streamed live on Facebook.

The annual Halloween Pet Costume Parade has been moved from Friday during Trick-or-Treat on MainStreet to Sunday. 


For more information, contact Pet Pangaea.

Other Fall activities


Oct. 13-Nov. 1

Downtown Los Alamos Scarecrow Contest

Central Avenue, Downtown Los Alamos 

In collaboration with Los Alamos MainStreet and Creative District, Los Alamos Arts Council brings a bit of autumn fun to downtown Los Alamos every year by organizing the annual Scarecrow Contest. Since 2001, scarecrows made by local businesses, clubs, organizations, schools, families, and individuals have graced the walkway lamps along Central Avenue during the week before Halloween, and up to Nov. 1. This year's theme is  "Into the Woods." Check them out all around town! 

To register, go to


Oct. 21

10-11 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. Swimming is allowed until 11 a.m. 

Certain fees may apply.

Limit 150 participants.

Oct. 21

2-6 p.m., Halloween Blood Drive

Los Alamos Teen Center

Join the Los Alamos Teen Center for their Annual Halloween Blood Drive. The Teen Center and its partners at Vitalant will be hosting a fun, monster-themed donation event. As always, there will be treats and goody bags for donors.

To register go to: and use Sponsor Code: LATeen to find the event. This opportunity is brought to you by the staff and teen volunteers of our JJAB-funded Youth Mobilizers program.

Oct. 31

5:30-7:30 p.m., Community Glow Tunnel

Chamisa Elementary School

Chamisa Elementary School invites you to their annual Community Glow tunnel. The theme for this year is "It's a jungle out there". Candy is available at the door! 

Please join us on Halloween!

Please email Nancy Brugh at if you can donate candy or volunteer. 

Scarecrow Logo (3).png

Halloweekend Sponsors

Interested in being a sponsor?
Contact Jacquelyn Connolly at 505-661-4844 or
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