Conserving and enhancing Mountains to Sound

Mountains to Sound Greenway Trust is one our favorite places to volunteer! They make it easy to volunteer and the impact they have on our community is undeniable.

Where is the Mountains to Sound Greenway National Heritage Area?

The Mountains to Sound Greenway landscape spans 1.5 million acres from Seattle to Ellensburg along the I-90 corridor.

What is the Mountains to Sound Greenway Trust?

The Mountains to Sound Greenway Trust is a coalition-based organization that works to steward the 1.5 million acres stretching from Seattle to Ellensburg, all while promoting access to the outdoors and striking a balance between the natural world and the people who call this region home.

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What does the Mountains to Sound Greenway Trust do?

The Mountains to Sound Greenway Trust leads and inspires action to conserve and enhance the landscape of the Mountains to Sound Greenway, ensuring a long-term balance between people and nature.

We work to conserve and restore natural lands, open spaces, and historic sites; build and maintain recreational trails; engage with students through our environmental education programadvocate for public lands and recreational access; lead a robust volunteer program; and so much more.

National Heritage Areas are places designated by Congress where historic, cultural, and natural resources combine to form cohesive, nationally important landscapes. We received designation in March 2019 and are currently in the midst of a three-year cooperative management planning process.

The work we do would not be possible without the partners that we collaborate with every day. The Greenway Coalition is a catalyst for action, convening multiple interest groups. We work together to tackle challenges and plan for the future of this incredible landscape and the people who live, work, and play here.

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What is the Mountains to Sound Greenway National Heritage Area?

In March 2019, the Mountains to Sound Greenway was officially designated by Congress as a National Heritage Area. Along with the Maritime Washington NHA, the Greenway is the first NHA in the Pacific Northwest. The Mountains to Sound Greenway National Heritage Area is a unique geographic corridor made up of connected ecosystems and communities spanning 1.5-million-acres from Seattle to Ellensburg.


What is a National Heritage Area?

National Heritage Areas are places designated by Congress where historic, cultural, and natural resources combine to form cohesive, nationally important landscapes.

The Mountains to Sound Greenway National Heritage Area proudly joins 54 other NHA sites in 32 states, including iconic and historic landscapes such as New York’s Niagara Falls, Mississippi’s Gulf Coast, and North Carolina’s Blue Ridge National Heritage Area. Click here to view and download maps of the Greenway. 


Looking for more ways to get involved?

The Mountains to Sound Greenway Trust has a volunteer program that works in collaboration with land managers to steward public lands within the Mountains to Sound Greenway National Heritage Area. Due to the COVID-19 pandemic, the volunteer program is currently on hold, though we do have several ways to stay involved in stewardship by doing your part to help keep the Greenway clean, and learning about why stewardship is so important from our Education Program’s online learning opportunities.

Another way to get involved is through the Greenway Explore-A-Thon, going on from April 1 to May 6. We invite you to experience and celebrate the diverse landscape of the Greenway. By participating you’ll commit to spending time out in the Greenway, using that goal and your personal stories of adventure to inspire support for this special place. How you choose to explore is up to you . . . perhaps you’ll visit a heritage museum, spot wildlife in a local park, or catch a beautiful sunset. There are so many ways to connect with the Greenway, and all activities and ability levels are welcome!

The next volunteer opportunity:

Kalika Curry