The Boulder Open Space Conservancy

The Boulder Open Space Conservancy

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Read on to learn more about your BOSC. This partnership is a unique collaboration of two equal and independent entities: OSMP and the community non-profit BOSC.

05/27/2026

Our Spring Full Moon Jazz is FULL! Thank you to the 300+ who emailed their RSVP!We are sorry that we can only accommodate less than half this capacity at the venue...we truly wish we could have everybody there! We didn’t expect so much interest so fast over the holiday weekend. Maybe we will add more events next year! But good news - please save the date for our Fall Full Moon Jazz Sunday, September 27th. Stay tuned for a new registration system too! 🌕✨
Bosc.org

04/25/2026

A week left to share your input! Click the link below to make your voice heard.

Have you taken our multimodal questionnaire yet?

We're asking you to help guide the future of multimodal access: trails, trailheads, bike connections, wayfinding and more. It's part of a bigger push to make Boulder's open spaces easier to reach for everyone, building on work like the 67 new bike racks we just installed across the system. A week left to share your input. Open through May 3.

➡️bldr.fyi/multimodal

03/14/2026

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“The City of Boulder will close all city-owned Open Space and Mountain Parks property west of Hwy. 93, Broadway and Hwy. 36 from sunset today, Friday, March 13, to sunrise on Sunday, March 15 as a fire prevention and visitor safety measure. This includes all trails and trailheads in the western part of the OSMP system. Flagstaff Road will also be closed to non-residential traffic.”Read more: https://ow.ly/HQR550YtOL5

The City of Boulder will close all city-owned Open Space and Mountain Parks property west of Hwy. 93, Broadway and Hwy. 36 from sunset today, Friday, March 13, to sunrise on Sunday, March 15 as a fire prevention and visitor safety measure. This includes all trails and trailheads in the western part of the OSMP system. Flagstaff Road will also be closed to non-residential traffic. Read more: https://ow.ly/HQR550YtOL5

Photos from The Boulder Open Space Conservancy's post 01/27/2026

Volunteer this weekend in your community to support BOSC at Old Man Winter Bike Rally & Run in Lyons! Volunteers who complete their shift will receive a hot meal, Old Man Winter Rally swag, and a donation will be made to Boulder Open Space Conservancy! Copy the link in comments to sign up to volunteer. Don’t forget to enter BOSC as the charity for which you are volunteering!

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Boulder, CO
80302