The Sierra Club Rocky Mountain Chapter covers the state of Colorado. The mission of the Sierra Club is simple: to explore, enjoy, and protect the planet. 

Everyone is welcome to participate in our outings and events, and you are encouraged to join the 1.4 million of your friends and neighbors who want: -a safe and healthy community in which to live -smart energy solutions to combat global warming -an enduring legacy for America's wild places

Since 1892, the Sierra Club has been working to protect communities, wild places, and the planet itself. We are the largest and most influential grassroots environmental organization in the United States. And our founder, John Muir, appears on the back of the California quarter.

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Welcome to the Sierra Club Rocky Mountain Chapter!

Recent Meetups

  • April 7 · 6:00 PM

    Movie Mondays!

    5 Sierra Clubers | 4.00 4.001

    Join the Sierra Club - Denver Metro Network for our first "Movie Mondays" event where we'll be screening the award-winning documentary "Food, Inc." by Robert Kenner.... Learn more
  • April 5 · 9:00 AM

    Spring Clean in Denver Part 1 of 4

    4 Sierra Clubers | 4.50 4.503

    We'll be cleaning up Denver this Spring on four Saturday outings.  We'll be meeting this Saturday at The Breakfast King and cleaning along the Platte River for about... Learn more
  • March 29 · 9:00 AM

    Sierra Club Outing Leader Training (OLT 101)

    12 Sierra Clubers | 5.00 5.005

    This is a training to become a certified Sierra Club Outing Leader.  In order to attend training you must: • Be a current Sierra Club member • Be at least 18 years of... Learn more
  • February 23 · 9:00 AM

    Hike In Cherry Creek State Park $$

    7 Sierra Clubers | 5.00 5.004 | 8 Photos

    Come and enjoin a lovely hike at my favorite place in Colorado: Cherry Creek State Park!  This hike is rated easy and will be around 5 miles in length and will cut... Learn more
  • January 26 · 9:00 AM

    Hike the Rocky Mountain Arsenal

    6 Sierra Clubers | 5.00 5.004

    Spend your Sunday morning/early afternoon hiking the trails in the Rocky Mountain Arsenal!  This is a National Wildlife Refuge located in Commerce City.  Our hike will... Learn more
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