Free Events and Things to do in Boulder, CO

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

Denver RUG - June 17th, 2026
Wednesday at 4:00 PM
Broomfield · 390 Interlocken Crescent #100
Denver RUG - June 17th, 2026
Wednesday at 4:00 PM
Broomfield · 390 Interlocken Crescent #100
Just added
Day 3 | Nikon Tour Denver | NIKKOR Z LENS DAY - Evening Sessions
Sun, Jun 21, 5:00 PM
Boulder · Boal Property
Just added
Day 3 | Nikon Tour Denver | NIKKOR Z LENS DAY - Evening Sessions
Sun, Jun 21, 5:00 PM
Boulder · Boal Property
Going fast
Day 1 | Nikon Tour Denver | Intro to Photography - Evening Sessions
Fri, Jun 19, 5:00 PM
Boulder · Boal Property
Going fast
Day 1 | Nikon Tour Denver | Intro to Photography - Evening Sessions
Fri, Jun 19, 5:00 PM
Boulder · Boal Property
Trek 50th anniversary celebration | Boulder
Sat, Jun 20, 9:00 AM
Boulder · Trek Bicycle Boulder
Trek 50th anniversary celebration | Boulder
Sat, Jun 20, 9:00 AM
Boulder · Trek Bicycle Boulder
Latte Art Throwdown at O.W.L Coffee Roasters
Fri, Jun 19, 6:00 PM
Boulder · 2355 30th St
Latte Art Throwdown at O.W.L Coffee Roasters
Fri, Jun 19, 6:00 PM
Boulder · 2355 30th St
Sales end soon
Cleaning Up Mt. Everest: A Reflection on High-Altitude Stewardship
Today at 7:00 PM
Boulder · Neptune Mountaineering
Sales end soon
Cleaning Up Mt. Everest: A Reflection on High-Altitude Stewardship
Today at 7:00 PM
Boulder · Neptune Mountaineering
Going fast
Stargazing at Eldorado Canyon State Park
Fri, Jun 19, 7:00 PM
Eldorado Springs · Eldorado Canyon State Park Visitor Center
Going fast
Stargazing at Eldorado Canyon State Park
Fri, Jun 19, 7:00 PM
Eldorado Springs · Eldorado Canyon State Park Visitor Center
Going fast
Coffee & Convo
Sat, Jun 20, 10:00 AM
Lafayette · East Simpson Coffee Company (The Cottage next door)
Going fast
Coffee & Convo
Sat, Jun 20, 10:00 AM
Lafayette · East Simpson Coffee Company (The Cottage next door)
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
Preparing our National Parks for the impacts of extreme weather events
Wed, Jun 24, 7:30 PM
Boulder · Frasier Retirement Community
Preparing our National Parks for the impacts of extreme weather events
Wed, Jun 24, 7:30 PM
Boulder · Frasier Retirement Community
Going fast
Ancestry Pt. 1 – Census
Tomorrow at 2:00 PM
Louisville · Louisville Public Library
Going fast
Ancestry Pt. 1 – Census
Tomorrow at 2:00 PM
Louisville · Louisville Public Library
Going fast
Potter the Otter: A Tale About Water
Thu, Jun 18, 10:15 AM
Louisville · Louisville Public Library
Going fast
Potter the Otter: A Tale About Water
Thu, Jun 18, 10:15 AM
Louisville · Louisville Public Library
Sales end soon
Sunbeam Studio's 4-Year Anniversary Party ☀️
Tomorrow at 6:00 PM
Louisville · Sunbeam Studio
Sales end soon
Sunbeam Studio's 4-Year Anniversary Party ☀️
Tomorrow at 6:00 PM
Louisville · Sunbeam Studio
Ancestry Pt. 2 – Vital Records
Sat, Jun 27, 2:00 PM
Louisville · Louisville Public Library
Ancestry Pt. 2 – Vital Records
Sat, Jun 27, 2:00 PM
Louisville · Louisville Public Library
Almost full
Lost Louisville Walking Tour
Sat, Jun 27, 10:00 AM
Louisville · Louisville Historical Museum
Almost full
Lost Louisville Walking Tour
Sat, Jun 27, 10:00 AM
Louisville · Louisville Historical Museum
4th Annual Big Boulder Dog Walk
Sat, Jun 20, 9:00 AM
Boulder · Cottonwood Trailhead
4th Annual Big Boulder Dog Walk
Sat, Jun 20, 9:00 AM
Boulder · Cottonwood Trailhead
Almost full
Boulder County Private Well Owner Workshop- Nederland 2026
Wednesday at 6:00 PM
Nederland · Nederland Community Center
Almost full
Boulder County Private Well Owner Workshop- Nederland 2026
Wednesday at 6:00 PM
Nederland · Nederland Community Center
Sales end soon
Women In Business-BOULDER-Networking-June
Tuesday at 12:00 PM
Boulder · Confluence Kitchen & Bath
Sales end soon
Women In Business-BOULDER-Networking-June
Tuesday at 12:00 PM
Boulder · Confluence Kitchen & Bath
Colorado Business Appreciation Social
Tue, Jun 23, 3:00 PM
Boulder · Upslope Brewing Company
Colorado Business Appreciation Social
Tue, Jun 23, 3:00 PM
Boulder · Upslope Brewing Company
Coyote Run on Canvas (Open Space Plein Air Series)
Sun, Jun 28, 7:30 AM
Louisville · Coyote Run Open Space
Coyote Run on Canvas (Open Space Plein Air Series)
Sun, Jun 28, 7:30 AM
Louisville · Coyote Run Open Space

Trends in Boulder

Explore more trends

Frequently asked questions about Boulder

What are the best free events to attend?

According to Eventbrite, the best free events are:

Denver RUG - June 17th, 2026

Day 3 | Nikon Tour Denver | NIKKOR Z LENS DAY - Evening Sessions

Day 1 | Nikon Tour Denver | Intro to Photography - Evening Sessions

Trek 50th anniversary celebration | Boulder

Which events are currently trending in Boulder?

The trending searches this month in Boulder are:

memorial day weekend events

mother's day

live music

stand up comedy

Which free events are coming up?

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

Cleaning Up Mt. Everest: A Reflection on High-Altitude Stewardship

Ancestry Pt. 1 – Census

Sunbeam Studio's 4-Year Anniversary Party ☀️

Women In Business-BOULDER-Networking-June

Denver RUG - June 17th, 2026

Denver RUG - June 17th, 2026

Day 3 | Nikon Tour Denver | NIKKOR Z LENS DAY - Evening Sessions

Day 3 | Nikon Tour Denver | NIKKOR Z LENS DAY - Evening Sessions

Day 1 | Nikon Tour Denver | Intro to Photography - Evening Sessions

Day 1 | Nikon Tour Denver | Intro to Photography - Evening Sessions

Trek 50th anniversary celebration | Boulder

Trek 50th anniversary celebration | Boulder

Latte Art Throwdown at O.W.L Coffee Roasters

Latte Art Throwdown at O.W.L Coffee Roasters

Cleaning Up Mt. Everest: A Reflection on High-Altitude Stewardship

Cleaning Up Mt. Everest: A Reflection on High-Altitude Stewardship

Stargazing at Eldorado Canyon State Park

Stargazing at Eldorado Canyon State Park

Coffee & Convo

Coffee & Convo

Lija Fisher -- "The Extraordinary Adventures of the Ordinary Barney Flarff"

Lija Fisher -- "The Extraordinary Adventures of the Ordinary Barney Flarff"

Preparing our National Parks for the impacts of extreme weather events

Preparing our National Parks for the impacts of extreme weather events

Ancestry Pt. 1 – Census

Ancestry Pt. 1 – Census

Potter the Otter: A Tale About Water

Potter the Otter: A Tale About Water

Sunbeam Studio's 4-Year Anniversary Party ☀️

Sunbeam Studio's 4-Year Anniversary Party ☀️

Ancestry Pt. 2 – Vital Records

Ancestry Pt. 2 – Vital Records

Lost Louisville Walking Tour

Lost Louisville Walking Tour

4th Annual Big Boulder Dog Walk

4th Annual Big Boulder Dog Walk

Boulder County Private Well Owner Workshop- Nederland 2026

Boulder County Private Well Owner Workshop- Nederland 2026

Women In Business-BOULDER-Networking-June

Women In Business-BOULDER-Networking-June

Colorado Business Appreciation Social

Colorado Business Appreciation Social

Coyote Run on Canvas (Open Space Plein Air Series)

Coyote Run on Canvas (Open Space Plein Air Series)

Things to do around Boulder

Trends in Boulder

1. Memorial day weekend events

2. Mother's day

3. Live music

4. Stand up comedy

5. Speed dating events

6. Sound bath

7. Singles party

8. Free yoga

9. Drag

10. Job fairs

11. Electronic music

12. Breathwork

What are the best free events to attend?

Which events are currently trending in Boulder?

Which free events are coming up?