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 along Interstate-90 in Washington state.

Use the interactive map below to find fun things to do across the Mountains to Sound Greenway National Heritage Area, including the greater Seattle area, Middle Fork Snoqualmie Valley, Snoqualmie River Valley, and Upper Yakima Basin.

This itinerary has rest stops, educational opportunities, and green spaces you can visit on your journey along the Mountains to Sound Greenway Trail. Pick your favorite few destinations to visit or venture the entire nine-mile stretch– it’s up to you!

Use this page to find hikes near you, mountain biking and cycling trails, epic winter sports, and more in the Greenway NHA.

We regularly host environmental volunteer events in the Mountains to Sound Greenway National Heritage Area and would love to have you join us! Click below to view our public events calendar or to learn more about how to plan a custom group event.

The Mountains to Sound Greenway National Heritage Area is an iconic 1.5-million-acre landscape that connects Central Washington, the Cascade Mountains, and Puget Sound. The Greenway promotes a healthy and sustainable relationship between people and the land by preserving a balance between built and natural environments.

Journey from the vibrant Puget Sound area, through thick forests, into historic towns, over a mountain pass, and onto the farms and sagebrush hills of central Washington. These 18 stops will highlight the best of the Greenway NHA, spanning from Seattle to Kittitas County.

The Mountains to Sound Greenway National Heritage Area (Greenway NHA) is a unique geographic corridor made up of connected ecosystems and communities spanning 1.5 million acres from Seattle to Ellensburg along Interstate 90 in Washington state.

A National Scenic Byway and now the nation’s newest National Heritage Area, the Mountains to Sound Greenway National Heritage Area (Greenway NHA) is an ecologically diverse corridor, stretching 100 miles along Interstate 90 from Seattle, across the Cascade Mountains to Ellensburg in central Washington.

The Mountains to Sound Greenway encompasses a world-class regional trail system. The vision is that a walker or bicyclist could travel, for recreation or as a commuter, on safe, enjoyable, non-motorized trails, connecting Puget Sound urban areas, the Cascade Mountains and Central Washington State.