Earth Day Marin 2026

Come join the fun at Earth Day Marin, our popular environmental celebration on Sunday, April 26, 2026, from 12 to 3pm, at the Mill Valley Community Center in Marin County.

Earth Day Marin is a free, family-friendly event inviting visitors of all ages to enjoy fun activities, art, music, games and exhibits about climate action in a beautiful outdoor setting. We expect this to be Marin’s largest Earth Day event!

Visit 50 booths hosted by environmental organizations and community groups to help build a more just and sustainable world. You will learn about climate actions such as: using clean energy, riding electric vehicles, eating well, living lightly, supporting climate justice, saving democracy and building healthy communities.

Earth Day Marin is produced by , with support from the County of Marin, the City of Mill Valley and many partners from across Marin and the Bay Area.

JOIN US!

• Get your free ticket for Earth Day Marin! for email updates.
• Would you like to support our free community event? Please .
• Would you like to volunteer at Earth Day Marin? to join a team.
• Would you like to exhibit or sponsor this event? Please .

Learn more on our , with videos and photos of previous events.

VOLUNTEER AT EARTH DAY MARIN!

Would you like to volunteer at our free community event? Join our team, and help create a better world!

There are many ways you can help: greet visitors, host activities, take photos, set up, clean up, coordinate or promote the event.

Please spread the word in your community! Ask your friends, family and neighbors to also sign up as volunteers, using this link:

Earth Day Marin is organized by an all-volunteer nonprofit with limited resources. Our free events are made possible by generous friends and neighbors like you.

Thanks for giving us a hand, if you can.

For more information, email us:

P oster art by David Dubin and Fabrice Florin.
#earthday #environment #climateaction #sustainable #marin

Also check out other Arts events in Mill Valley, Trips & Adventurous Activities in Mill Valley.