Welcome to the Sierra Club Rocky Mountain Chapter

The Sierra Club's members and supporters are more than 2.4 million of your friends and neighbors across the country; more than 55,000 here in Colorado. Inspired by nature, we work together to protect our communities and the planet. The Sierra Club is America's oldest, largest and most influential grassroots environmental organization.  Our mission is to explore, enjoy, and protect the planet.

The Sierra Club Rocky Mountain Chapter works at the state level, and is also comprised of 10 local groups who focus their work at the municipal and county levels. Explore this website to learn more about what we're doing, where we're headed, and how you can participate. We're involved in everything from hiking to environmental education and conservation - join in and help us protect the air, land, water and wildlife throughout this beautiful state!

We hope you enjoy the new website we've worked hard to create for you!  Please be aware that our website is undergoing transition right now, but if you find a broken link, or think of something for which our website isn't meeting your needs, please let us know.

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