Open Space and Mountain Parks

Boulder's Open Space & Mountain Parks (OSMP) are a very special place. The open space lands teem with native plants and wildlife and are home to threatened and endangered species. They serve as a buffer between Boulder and nearby development. They sustain agriculture uses and add untold benefits to the natural environment - clean air, water, and earth.

The lands shape the urban mosaic of the Boulder Valley and provide residents with passive recreation opportunities. Trails are used by walkers, hikers, bicyclists, horseback riders, dog walkers and other passive recreational uses.

OSMP Alerts

Trail/Trailhead Closures

Trail closures related to Xcel transmission line work: OSMP visitors may encounter temporary trail closures and delays southwest of Boulder while Xcel conducts transmission line replacement work. Because of the rugged location of transmission lines in Bear Canyon, longer-term trail closures in the area are likely to occur beginning in August.

Please see the temporary closures page for more details on the trail closures below. OSMP's interactive trail map also shows these longer-term trail closures and restrictions:

Royal Arch Trail closure: The Royal Arch Trail will be closed 8 a.m. to 4:30 p.m., Monday through Thursday the week of June 25, so OSMP can conduct repairs to improve the stability of the rugged, steep trail.
All OSMP muddy trail closures lifted as of June 21.
1st/2nd Flatiron Trail work: The trail will be closed Mon. through Thurs. every week, beginning June 4.
Community Ditch and Coal Seam Trails leash-required: Dogs must be on leash east of Highway 93 because of coyote activity.
East Boulder/White Rocks Trail bridge closed

Project Updates & Other Alerts

Boulder County fire restriction: Boulder County has enacted Level 1 Fire Restrictions, effective June 12, for western Boulder County. OSMP grills and fireplaces are closed because of the ban. More information from Boulder County on what's included in the ban.

OSMP Master Plan: See a video about recent community engagement and learn how the draft focus areas emerged from your input. Learn more about how additional community input helped refine draft focus areas and related topics, and sign up for email updates.

Purchase OSMP annual parking permits online: Visitors whose vehicles are registered outside of Boulder County can now purchase OSMP annual parking permits online. Learn more about parking permits.

Open Space & Mountain Parks Calendar

«June 2018»
S	M	T	W	T	F	S
					1	2
3	4 Mon4 5:30 p.m. Meadow Music Monday, June 4 @ 5:30 to 7 p.m.	5 Tue5 2 p.m. Nature Play Date at Bobolink Trail! Tuesday, June 5 @ 2 to 4 p.m. Tue5 5 p.m. Prairie Dog Working Group Tuesday, June 5 @ 5 to 9 p.m.	6	7 Thu7 9 a.m. Nature Play Date at Teller Lake! Thursday, June 7 @ 9 to 11 a.m. Thu7 6:30 p.m. Listening Session to Hear Ideas on How to Connect the Community With Local Agriculture Thursday, June 7 @ 6:30 to 8:30 p.m.	8 Fri8 1 p.m. Introduction to Hiking – Woods Quarry Friday, June 8 @ 1 to 4 p.m. Fri8 6 p.m. Relaxing Through Forest Bathing Friday, June 8 @ 6 to 8 p.m.	9
10	11	12 Tue12 2 p.m. Nature Play Date at McClintock! Tuesday, June 12 @ 2 to 4 p.m. Tue12 6 p.m. Open Space Board of Trustees Meeting (Televised) Tuesday, June 12 @ 6 to 8 p.m.	13 Wed13 6 p.m. Open Space Board of Trustees Meeting (Televised) Wednesday, June 13 @ 6 to 8 p.m.	14 Thu14 9 a.m. Nature Play Date at Wonderland Lake! Thursday, June 14 @ 9 to 11 a.m.	15 Fri15 6 p.m. Relaxing Through Forest Bathing Friday, June 15 @ 6 to 8:30 p.m.	16
17	18	19 Tue19 10 a.m. Guided Hike - to the Top of Flagstaff Mountain! Tuesday, June 19 @ 10 a.m. to 2 p.m. Tue19 2 p.m. Nature Play Date on Flagstaff Mountain! Tuesday, June 19 @ 2 to 4 p.m.	20 Wed20 9:30 a.m. Touch and Textures in Nature - Storytime Hike! Wednesday, June 20 @ 9:30 to 10:30 a.m. Wed20 10 a.m. Introduction to Hiking – Woods Quarry Wednesday, June 20 @ 10 a.m. to 2 p.m. Wed20 6:30 p.m. The Buzz About Bats Wednesday, June 20 @ 6:30 to 8 p.m.	21 Thu21 9 a.m. Nature Play Date at Bobolink Trail! Thursday, June 21 @ 9 to 11 a.m. Thu21 10 a.m. Guided Hike - Royal Arch Trail Thursday, June 21 @ 10 a.m. to 2 p.m.	22	23 Sat23 5 p.m. Wild Wildfire Hike Saturday, June 23 @ 5 to 7 p.m. Sat23 7 p.m. Bats in the Moonlight Saturday, June 23 @ 7 to 10 p.m.
24 Sun24 9 a.m. Flowers, Floods and Flocking Birds Sunday, June 24 @ 9 to 11 a.m. Sun24 4 p.m. Vitality of Living Spaces - CANCELED Sunday, June 24 @ 4 to 6 p.m.	25 Mon25 5:30 p.m. Meadow Music Monday, June 25 @ 5:30 to 7 p.m. Mon25 6 p.m. Open Space Board of Trustees Meeting (Televised) Monday, June 25 @ 6 to 8 p.m.	26 Tue26 2 p.m. Nature Play Date at Teller Lake! Tuesday, June 26 @ 2 to 4 p.m.	27 Wed27 9:30 a.m. Cuentos Para Niños: CANCELADO Wednesday, June 27 @ 9:30 to 10:30 a.m. Wed27 2 p.m. Grandparents as Nature Guides for Grandchildren Wednesday, June 27 @ 2 to 4 p.m.	28 Thu28 9 a.m. Nature Play Date at McClintock! Thursday, June 28 @ 9 to 11 a.m. Thu28 6 p.m. Bobolink Month by Month: Honing a Sense of Place Thursday, June 28 @ 6 to 7:30 p.m.	29 Fri29 6 p.m. Relaxing Through Forest Bathing Friday, June 29 @ 6 to 8:30 p.m.	30 Sat30 6:30 a.m. Walk 360 "Slow Marathon" - Circle Boulder on Foot! Saturday, June 30 @ 6:30 a.m. to 6:30 p.m. Sat30 9 a.m. Guided Hike – Green Mountain Summit Saturday, June 30 @ 9 a.m. to 3 p.m. Sat30 9 a.m. Roll and Stroll Bird Watching Saturday, June 30 @ 9 to 11 a.m.