Washington State Chapter

Lobby Week Group holding Sierra Club Banner

The Sierra Club's members and supporters are more than 3.8 million of your friends and neighbors. Inspired by nature, we work together to protect our communities and the planet. We’re America's oldest, largest and most influential grassroots environmental organization. 

We're involved in environmental education, conservation, and political issues.  We lead fun outings such as hikes, trail maintenance, and snow-shoeing walks. Join in and help us protect our air, land and water throughout our beautiful state!

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