Visit the Boulder County Ballot Measures website for information about 2025 ballot measures.

Hikes and Events Open Space Calendar

Hikes and Events Open Space Calendar

Enjoy group-led hikes, indoor programs, special events, seniors hikes, kids programs, and other Parks & Open Space meetings.

Calendar of Events

Corvids All Around Us

Ron Stewart Parks & Open Space Building 5201 St Vrain Rd, Longmont, CO
Agricultural Heritage Center Open

Agricultural Heritage Center Open

Agricultural Heritage Center 8348 Ute Hwy, Longmont, CO

The Geology of Sandstone Ranch

Sandstone Ranch 3001 CO-119, Longmont, CO
Agricultural Heritage Center Open

Agricultural Heritage Center Open

Agricultural Heritage Center 8348 Ute Hwy, Longmont, CO
Agricultural Heritage Center Open

Agricultural Heritage Center Open

Agricultural Heritage Center 8348 Ute Hwy, Longmont, CO

Hikes for Seniors: Looking for the Leaves

Mud Lake 2034 County Rd 126, Nederland, CO

Evening at the Museum: Hard Rock Mining in Boulder County – How and Why Did Deposits Form Here?

Nederland Mining Museum 200 N. Bridge Street, Nederland, CO
Hammering on the Farm

Hammering on the Farm

Agricultural Heritage Center 8348 Ute Hwy, Longmont, CO
Agricultural Heritage Center Open

Agricultural Heritage Center Open

Agricultural Heritage Center 8348 Ute Hwy, Longmont, CO

Celebrating 50 Years of Night Skies Over Open Space

Heil Valley Ranch - Wapiti Trailhead 1188 Geer Canyon Rd., Boulder

Junior and Senior Fishing Derby

Walden Ponds Wildlife Habitat 3893 N. 75th St., Boulder, CO
Agricultural Heritage Center Open

Agricultural Heritage Center Open

Agricultural Heritage Center 8348 Ute Hwy, Longmont, CO

Important

  • Registration is handled through Discover Boulder County, Parks & Open Space’s volunteer and event registration system.
  • Registration for most programs begins on the 20th of the month before the event.
  • All ages are welcome unless otherwise noted.
  • Pets are not allowed.
  • Volunteer projects are listed on the Volunteer Opportunities page.

Boulder County wants to ensure that everyone has equal access to our programs, activities, and services. To request an Americans with Disability Act (ADA) accommodation, please email ada@bouldercounty.gov, or call 303-441-1386. Submit your request as early as possible, and no later than two business days before the event.

If you need help in another language, please email posinfo@bouldercounty.gov, or call 303-678-6277. Contact us as early as possible, and no later than three business days before the event.

Sign Up for Email Updates

Hikes and Events Emails

A large group of people gather around a park shelter listening to a tour guide

Receive a monthly email with date, location, time and details about upcoming programs.

Sign Up for Hikes and Events Emails

Kids and Family Emails

A group of kids looking into a pond

Receive a monthly email for programs and events that are of special interest to children.

Sign Up for Kids and Family Events Emails

Contact Us

Parks & Open Space

303-678-6200
8 a.m. to 4:30 p.m.
Monday-Friday

Office Location

5201 St. Vrain Road
Longmont, CO 80503
Map and Directions

Office Hours
8 a.m.-4:30 p.m.
Monday-Thursday
Friday by phone, email, or appointment only.

Parks are open sunrise to sunset

Connect With Us