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Activities get outside with us

Courses learn outdoor skills

Upcoming Events

Evening Lecture at CMC 1
Tue, Sep 22, 2026

Evening Lecture at CMC 1 – Climbing Wall

Evening lecture at the American Mountaineering Center

Duncan's Ridge
Tue, Sep 22, 2026

Rock Climb – Duncan's Ridge

Join us for a great rock climbing trip at Duncan's Ridge!

Tue, Sep 22, 2026

CMC State Board Meeting

The Board of Directors for The Colorado Mountain Club holds 6 meetings annually. All members are welcome to attend.

Tue, Sep 22, 2026

Trip Leader Social

A group event to get the Boulder TLs together at the Rayback to meet, greet, and exchange ideas.

Conservation – Brainard Lake - Gateway Parking
Wed, Sep 23, 2026

Conservation – Brainard Lake - Gateway Parking

Volunteer with CMC's Stewardship Trail Crew!

Updates from the Blog

September Updates from the CMC Conservation Crew

September Updates from the CMC Conservation Crew

Conservation Coordinator Joey Lancia shares updates from the seasonal Colorado Mountain Club Conservation Stewardship Crew.
Help Protect the Places We Love and Recreate

Help Protect the Places We Love and Recreate

Our public lands, both in Colorado and nationwide, need your voice right now.
How to Use Alpine Trail Runs to Train for Autumn Trail Races

How to Use Alpine Trail Runs to Train for Autumn Trail Races

As autumn approaches and trail race season gets underway, Annalise Grueter explores how alpine trail running and hiking at higher elevations can support your training. She shares her perspective on altitude, the benefits of training in Colorado’s high country, and several routes worth visiting this fall.