Pledge to make a difference, together.
The Mountains to Sound Greenway Trust leads and inspires action to conserve and enhance the Mountains to Sound Greenway National Heritage Area. This iconic 1.5 million-acre landscape stretches from Seattle to Ellensburg along the I-90 corridor, connecting Central Washington, the Cascade Mountains, and Puget Sound. The Greenway Trust is a coalition-based organization that works to steward these lands, all while promoting access to the outdoors and striking a long-term balance between the needs of the natural world and the people who call this region home.