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Free Events and Things to do in Boulder, CO

Search for something you love or check out popular events in your area.

Neptune x Raide Bash
Thu, May 28, 7:00 PM
Boulder · Neptune Mountaineering
Neptune x Raide Bash
Thu, May 28, 7:00 PM
Boulder · Neptune Mountaineering
Almost full
The Swoon Society Book Club: May 2026
Wed, May 27, 6:00 PM
Erie · Briggs Street Books and Music
Almost full
The Swoon Society Book Club: May 2026
Wed, May 27, 6:00 PM
Erie · Briggs Street Books and Music
Going fast
T. A. Barron -- "Naming Nature"
Thu, May 21, 6:30 PM
Boulder · Boulder Bookstore
Going fast
T. A. Barron -- "Naming Nature"
Thu, May 21, 6:30 PM
Boulder · Boulder Bookstore
Sales end soon
Instructor Meet & Greet | Denver Area
Tomorrow at 12:00 PM
Broomfield · Spartan College of Aeronautics and Technology - Broomfield Campus
Sales end soon
Instructor Meet & Greet | Denver Area
Tomorrow at 12:00 PM
Broomfield · Spartan College of Aeronautics and Technology - Broomfield Campus
Almost full
Crime Free Housing Training / Wednesday, May 20
Wednesday at 9:00 AM
Longmont · 350 Kimbark St
Almost full
Crime Free Housing Training / Wednesday, May 20
Wednesday at 9:00 AM
Longmont · 350 Kimbark St
Sales end soon
Free Striking Class | Tier One Academy Grand Opening
Saturday at 10:00 AM
Lafayette · 275 Waneka Pkwy unit 6
Sales end soon
Free Striking Class | Tier One Academy Grand Opening
Saturday at 10:00 AM
Lafayette · 275 Waneka Pkwy unit 6
Almost full
2026 Longmont Community Foundation Scholarship Celebration
Monday at 3:00 PM
Longmont · Loomiller Park
Almost full
2026 Longmont Community Foundation Scholarship Celebration
Monday at 3:00 PM
Longmont · Loomiller Park
The Future at Work: Techstars Workforce Development Demo Day
Thu, Jun 4, 6:00 PM
Boulder · eTown Hall
The Future at Work: Techstars Workforce Development Demo Day
Thu, Jun 4, 6:00 PM
Boulder · eTown Hall
Almost full
The Hummingbird Chronicles: Backyard Tips & Tricks
Sat, May 23, 3:30 PM
Louisville · Louisville Public Library
Almost full
The Hummingbird Chronicles: Backyard Tips & Tricks
Sat, May 23, 3:30 PM
Louisville · Louisville Public Library
Almost full
Noxious Weed ID Training
Tuesday at 6:00 PM
Louisville · Aquarius Trailhead, Louisville
Almost full
Noxious Weed ID Training
Tuesday at 6:00 PM
Louisville · Aquarius Trailhead, Louisville
Sales end soon
Plant Forward Boulder Potluck: Micronutrients & Sprouting
Sunday at 3:00 PM
Boulder · NoBo Library - Boulder Public Library District
Sales end soon
Plant Forward Boulder Potluck: Micronutrients & Sprouting
Sunday at 3:00 PM
Boulder · NoBo Library - Boulder Public Library District
Sales end soon
Lack Lazuli (Derek Pedersen) At Front Range Birding & Optics Boulder
Tomorrow at 6:30 PM
Boulder · Front Range Birding & Optics
Sales end soon
Lack Lazuli (Derek Pedersen) At Front Range Birding & Optics Boulder
Tomorrow at 6:30 PM
Boulder · Front Range Birding & Optics
Sales end soon
Social Media Hacks to Survive a Shifting Real Estate Market
Tuesday at 10:00 AM
Boulder · Main Library - Boulder Public Library District
Sales end soon
Social Media Hacks to Survive a Shifting Real Estate Market
Tuesday at 10:00 AM
Boulder · Main Library - Boulder Public Library District
Almost full
Somatic Breathing for Transforming Your Life (** Bring Your Yoga Mat**)
Thu, May 21, 6:30 PM
Lafayette · The Well Healing Center
Almost full
Somatic Breathing for Transforming Your Life (** Bring Your Yoga Mat**)
Thu, May 21, 6:30 PM
Lafayette · The Well Healing Center
Full Moon Sunrise Hike - Wake-up to Wonder!
Sun, May 31, 4:15 AM
Boulder · Royal Arch Trail Head
Full Moon Sunrise Hike - Wake-up to Wonder!
Sun, May 31, 4:15 AM
Boulder · Royal Arch Trail Head
Sales end soon
Guardian Storage 2026 Spring Shred-It
Saturday at 11:00 AM
Westminster · Guardian Storage Westminster
Sales end soon
Guardian Storage 2026 Spring Shred-It
Saturday at 11:00 AM
Westminster · Guardian Storage Westminster
Full Moon Sunrise Hike - Wake up to Wonder!
Sun, May 31, 4:15 AM
Boulder · Royal Arch Trail Head
Full Moon Sunrise Hike - Wake up to Wonder!
Sun, May 31, 4:15 AM
Boulder · Royal Arch Trail Head
Blue Star's Color of the Year Event
Wednesday at 11:30 AM
Louisville · Mountain High Appliance
Blue Star's Color of the Year Event
Wednesday at 11:30 AM
Louisville · Mountain High Appliance
Sales end soon
Heather Brockman Lee -- "Poppy"
Saturday at 11:00 AM
Boulder · Boulder Bookstore
Sales end soon
Heather Brockman Lee -- "Poppy"
Saturday at 11:00 AM
Boulder · Boulder Bookstore
Lija Fisher -- "The Extraordinary Adventures of the Ordinary Barney Flarff"
Wed, Jun 24, 6:30 PM
Boulder · Boulder Bookstore
Lija Fisher -- "The Extraordinary Adventures of the Ordinary Barney Flarff"
Wed, Jun 24, 6:30 PM
Boulder · Boulder Bookstore

Trends in Boulder

Explore more trends

Explore more trends

Frequently asked questions about Boulder

What are the best free events to attend?

According to Eventbrite, the best free events are:

Neptune x Raide Bash

The Swoon Society Book Club: May 2026

T. A. Barron -- "Naming Nature"

Crime Free Housing Training / Wednesday, May 20

Which events are currently trending in Boulder?

The trending searches this month in Boulder are:

stand up comedy

electronic music

Which free events are coming up?

Discover the best free events happening soon – you don't want to miss them:

Instructor Meet & Greet | Denver Area

Lack Lazuli (Derek Pedersen) At Front Range Birding & Optics Boulder

Free Striking Class | Tier One Academy Grand Opening

Guardian Storage 2026 Spring Shred-It