Help support your Meetup
Meet Chicago area people to discuss environmental issues on a global and local level. Live the Sierra Club motto "Explore, enjoy and protect the planet" by involvement in activist, social and outdoor adventures in the Chicagoland area.
See our Greater Chicago Event Calendar.
Check out our sponsor's clinics and events by clicking on the REI logo.
5,140 Adventure Travelers
5,080 Baby Boomers
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