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

  • 3 days ago · 6:00 PM

    Movie Mondays!

    6 Sierra Clubers

    Join the Sierra Club - Denver Metro Network for "Movie Mondays" where we'll be screening the documentary "CRUDE: The Real Price of Oil."  Three years in the making, this... Learn more
  • 5 days ago · 8:30 AM

    Legislative Forum (Denver)

    5 Sierra Clubers

    Do you want to have a closer view of what our lobbyists, activists and legislators are doing? Then join the Sierra Club Denver Metro Network and Audubon Society of... Learn more
  • February 22 · 5:30 PM

    Outing Leader Meeting Spring-DMN Event

    4 Sierra Clubers | 5.00

    This is the fourth of four seasonal meetings that we will be having for current Outing Leaders, folks on their way to Outing Leader certification, and people who are... Learn more
  • February 14 · 11:00 AM

    Be My Rocky!

    4 Sierra Clubers | 9 Photos

    Bring your valentine (or yourself as we celebrate our love for the outdoors) and join us for a snowshoeing hike in Rocky Mountain National Park, followed by dinner in... Learn more
  • February 7 · 9:30 AM

    Healing Hike: Carson Nature Center (Denver)

    3 Sierra Clubers | 5.00 | 7 Photos

    Where can one go to find healing in difficult times? Often times one can find solitude and comfort in the outdoors. In the recent months our country has had some rough... Learn more
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