Seattle goes big for Earth Day, with events that mix hands-on learning, outdoor fun, and community connection. Whether you want to get your hands dirty, hit the trails, or browse sustainable goods, there’s something happening across the region worth checking out this April. Best of all, most of these events and activities are completely free or low cost!
Here are the top six Earth Day events happening in and around Seattle this month:
Earth Day Run

If you’d like to get active outdoors, the Earth Day Run on Saturday, April 18 at Magnuson Park offers various distances from a kid-friendly dash up to a half marathon. After crossing the finish line, participants can plant native trees, take one home, or donate used running shoes for a good cause.
Earth Day at Saltwater State Park

For a more laid-back outdoor experience, the Earth Day celebration at Saltwater State Park in Des Moines on Saturday, April 18 features guided hikes, kids’ activities, and low-tide beach exploration. It’s a great way to learn about local ecosystems while enjoying Puget Sound scenery.
EarthFest in Bellevue

Over on the Eastside, EarthFest in Bellevue takes place Sunday, April 19 at the Bellevue Botanical Garden. This family-friendly celebration focuses on environmental stewardship, with garden tours, creative art activities, and workshops centered on clean energy and sustainable living. Bonus tip: now you can take the Crosslake Connection to get there and back via public transit!
Goodwill ReMake Days

Evergreen Goodwill ReMake Days events run between April 22 and April 26 with a series of creative, sustainability-focused events. Hosted by Evergreen Goodwill and partners, the lineup includes upcycling workshops, a fashion runway show, and a curated pop-up at The Bins—all free, though RSVPs are encouraged.
Earth Day Resource Fair

The P-Patch Earth Day Resource Fair on Saturday, April 25 invites you to find community at the Northwest African American Museum. This free, all-ages event includes a seed swap, live music, museum tours, and local vendors—perfect for connecting with neighbors and sharing resources.
Arboretum Spring Plant Sale

At the Washington Park Arboretum Spring Plant Sale on Sunday, April 26, plant lovers can stock up on greenery while enjoying a festive atmosphere. Held at the Graham Visitors Center, the event features live music, gardening demonstrations, and refreshments.