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Colorado Mountain Club
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Free Headlamp from Black Diamond when you Join or Renew

Use code BRIGHTNIGHTS to get your free Black Diamond Headlamp 

Limited Time Offer - good for new and renewing memberships

BANFF Mountain Film Fest at CMC 10/11-10/13

Friday, February 28 - Sunday, March 1 at the Paramount in Denver

Three nights each with their own film line-up. Get the most afforadable tickets from the CMC, quantities limited! LEARN MORE>>

ReFUND Colorado Program

You can now donate a portion or all of your Colorado state tax refund to support the work of Colorado Mountain Club. Learn More>>

New Book - Flatiron scrambles

Pre-order The Best Flatiron Scrambles now and shop other CMC books at>>

Women's Month 2020

All are welcome to our month of films, hikes, happy hours, learning opportunities, speakers, etc! LEARN MORE>>

Women also receive 10% when they call us to join in March!

Strategic Plan 2025

A bold new plan for the CMC that was created by our members for our members


ReFUND Colorado


Support the CMC directly from your state tax returns!

ReFUND Colorado



This year, Coloradans will have a chance to donate from their state income tax refund to a local nonprofit they trust like Colorado Mountain Club.


Learn More

New CMC Press Book!


Strategic Plan 2025 Announced


The Best Flatirons Scrambles is a must-have for anyone interested in scrambling on the iconic sandstone slabs of Boulder’s Flatirons and will broaden the horizons of new and veteran scramblers alike.

It includes 25 of the top-rated routes in the Flatirons, ranging from Class 4 to 5.5. Divided into four sections based on designated trailheads, the guide details each approach, route, descent, and link-ups with full-color imagery.

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Trail & Timberline's Latest Edition

About Us

Founded in 1912, the CMC exists to serve and educate Coloradans, encouraging them to become respectful and responsible recreators.


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Call the CMC Office at (303) 279-3080 or email us at

Groups & Sections

Regional Groups in
the Front Range

Boulder Group

Denver Group

Fort Collins

Pikes Peak

CO Wilderness

For active families

Friends of Colorado

For out-of-state members

Regional Groups
Around the State

Gore Range Group

Roaring Fork Group

El Pueblo

Friends of
Routt Backcountry

Western Slope