City of Boulder Open Space & Mountain Parks

City of Boulder Open Space & Mountain Parks We're sharing news, stories and photographs about your Boulder open space.

Follow us for trail news, spectacular images from our community, and interesting facts about the incredible lands, wildlife and plants found on Open Space and Mountain Parks land.

Wildfire resilience takes many forms, including some that moo. Starting in mid-June, cattle will be working their way th...
06/11/2026

Wildfire resilience takes many forms, including some that moo. Starting in mid-June, cattle will be working their way through designated Open Space areas west of Boulder, helping reduce grasses that can contribute to fast-moving wildfires. This project is part of a broader effort that includes perimeter mowing, ecosystem restoration and community preparedness.

Please respect all posted signs, keep pets under control and give livestock plenty of space.

Learn more about Boulder’s wildfire resilience work at bouldercolorado.gov/wildfireready

Enjoy your summer by getting outside and volunteering for a trail work day! Come work alongside a professional trail cre...
06/10/2026

Enjoy your summer by getting outside and volunteering for a trail work day!

Come work alongside a professional trail crew and learn how to construct and maintain sustainable trails. Opportunities vary in difficulty and are available for all abilities. Ages 16 and up. Lunch is provided!

One day projects include:
- Tuesdays, 8 a.m. to 3 p.m.
- Wednesdays, 8 a.m. to 3 p.m.
-Sanitas, 8 a.m. to 3 p.m. Difficult.

Register at givepul.se/b1ao42

What are your summer plans? There is so much to learn and enjoy in the outdoors with free nature programs for all ages a...
06/08/2026

What are your summer plans? There is so much to learn and enjoy in the outdoors with free nature programs for all ages and abilities.

Find even more programs at NatureHikes.org.

Colorado's prairies are one of the most hardworking landscapes in the state, and one of the most endangered ecosystems i...
06/06/2026

Colorado's prairies are one of the most hardworking landscapes in the state, and one of the most endangered ecosystems in North America.

They filter our water, shelter hundreds of species and store carbon underground with quiet resilience. And right here in Boulder, we have large expanses of them!

Next time you visit an open space like Greenbelt Plateau, slow down. Listen for the birds and insects. These prairies are a living connection to something ancient, and spending time in them does the soul good.

🌾 Happy Colorado Prairie Day!

We heard you were wondering what rangers have been up in a recent month... Spoiler: it’s a lot! In addition to waving at...
06/05/2026

We heard you were wondering what rangers have been up in a recent month... Spoiler: it’s a lot! In addition to waving at you on the trail, two of our rangers became wildland firefighters, we presented a Citizen Award, and gave programs about fire ecology, prairies, moose, history, fishing, beavers and deep space!

Stuck Climbers: 2
Injured Hikers: 2
Injured Cyclists: 1
Fallen paragliders: 1
Raccoons rescued by rangers: 3
Raccoons rangers wanted to take home: 3 (I mean, look at them! Instead, two are being rehabilitated and one was reunited with mom)
Raccoons with distemper: 2
Turkeys that gobbled back when gobbled at by rangers: 1 (that’s good luck)
Trucks Stuck on Flagstaff: 2 (that’s not good luck)
Motorcycle crash: 1
Car through Fence: 1
Cars drifting into oncoming traffic: 1
People asleep at the wheel: 1
Car in field: 1
Driver’s Ed refresher, anyone??
Dogs chasing deer: 1
Dogs biting dogs: 1
Rattlesnakes biting dogs: 1, our condolences to the family.
Illegal dumping: 1
Trespassing in buildings: 1
Trespassing in Habitat Conservation Areas: 4
Burglary: 1 (Rangers assisted the Boulder County Sheriff’s Office in apprehending the suspect)
S*x Assault: 1
Arrests: 1
Missing Teen: 1 (Found safe, off OSMP property)
Suicidal person: 1 If you or someone you know is suicidal, call the su***de hotline: 988

We’ll see you out there- stay safe, stay hydrated and call us when you need us!

Join the Boulder Open Space and Mountain Park Rangers and Boulder Parks and Rec Rangers for coffee and great conversatio...
06/03/2026

Join the Boulder Open Space and Mountain Park Rangers and Boulder Parks and Rec Rangers for coffee and great conversation! Community members are invited to meet and chat with Rangers, learn about local wildlife and ecosystems plus earn some fun giveaways. The event will take place from 9 a.m. to 11 a.m. on Sunday, June 7 on the east side of the East Boulder Community Recreation Center parking lot.

The Café Alejandro coffee truck will be on-site and community members can enjoy one free beverage per person, courtesy of the city.
Let us know your favorite way to play and your biggest concerns in our parks and open spaces. This feedback helps guide our Rangers as they complete all their duties.

No registration required. See you there!

Celebrate, learn and play at Chautauqua Park! Join OSMP and Leave No Trace for a fun, family-friendly trailhead experie...
06/02/2026

Celebrate, learn and play at Chautauqua Park!

Join OSMP and Leave No Trace for a fun, family-friendly trailhead experience with games, hands-on activities and simple tips for caring for Boulder’s open space.

Come celebrate our community earning the Leave No Trace Gold Standard Site Designation and the role each of us plays in protecting these places.

📍 Chautauqua Trailhead
🕒 Sunday, June 7 from 9 a.m. to 1 p.m.

Flagstaff Nature Center is now open! Volunteers are available 10 a.m. to 4 p.m. most Fridays, Saturdays and Sundays (and...
05/30/2026

Flagstaff Nature Center is now open!

Volunteers are available 10 a.m. to 4 p.m. most Fridays, Saturdays and Sundays (and Mondays of holiday weekends) to offer trail directions, provide maps and share information about local flora and fauna. We have wildlife displays and even lots of children's and adult activities!

Come by and say hi!👋

Do you know what this bird is called? Then come on down to Trivia Night with Leave No Trace!Test your knowledge of Bould...
05/28/2026

Do you know what this bird is called? Then come on down to Trivia Night with Leave No Trace!

Test your knowledge of Boulder’s landscapes, learn simple ways to protect the places you love and maybe even win a prize.

It’s all part of celebrating our community earning the Leave No Trace Gold Standard. Because stewardship can be fun, too.

📍 Fjällräven Boulder, 1048 Pearl St.
🗓️Thursday, June 4 from 6:30 to 8:30 p.m.

📸Photo credit: Christian Nunes

Celebrate National Trails Day by giving back to the trails you love. Join OSMP for a hands-on stewardship project at Bo...
05/26/2026

Celebrate National Trails Day by giving back to the trails you love.

Join OSMP for a hands-on stewardship project at Boulder Valley Ranch, where volunteers will help improve the Hidden Valley Trail to support all-terrain handcycle access as part of a larger effort to create a more inclusive trail system.

Be part of the work that helps make Boulder’s open space more accessible, sustainable and welcoming for all.

📍 Hidden Valley Trail, Boulder Valley Ranch
🕗 Saturday, June 6 from 8 a.m. to 4 p.m.
💻 Register to attend at: givepul.se/2k9u4p

Address

2520 55th Street
Boulder, CO
80301

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+13034413440

Website

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