The Mountains to Sound Greenway National Heritage Area (Greenway NHA) is a diverse landscape stretching 100 miles from Seattle to Ellensburg along Interstate-90 (a National Scenic Byway) in Washington state. There are endless ways to explore this nationally-significant landscape, from discovering stories of our history and heritage; enjoying world-class recreational opportunities; visiting small towns and vibrant cities; and so much more.
Check out our interactive map and trip-planning resources below to spark ideas for your next adventure out in the Greenway NHA. Whether it’s your first visit or you’ve lived here your entire life, there’s always something new to learn and experience!
Plan Your Visit
Looking for inspiration to help you get out in the Greenway NHA? Our tours and itineraries are a great place to start! Or you can dive right into one of our four distinct regions: Urban Communities, Snoqualmie River Valley, Middle Fork Snoqualmie Valley, and the Upper Yakima Basin.
Wondering how you can get around in the Greenway NHA? Check out this page for information on public transit, wheelchair-accessible adventures, bike share options, and more.
Learn something new about the Greenway NHA
Whether it’s your first visit or you’ve lived here your entire life, there’s always something new to learn and
discover in the Greenway NHA. Dig deep and you’ll uncover layers of history, heritage, and culture that will foster
a richer understanding and connection to this treasured landscape.
Explore the Greenway Trips
Unique, behind-the-scenes opportunities to explore the Greenway NHA.
#RecreateResponsibly to stay safe and care for our beloved outdoor spaces.
Passes and Permits
Your guide to local recreation passes and permits.
Hit the Open Road
The Mountains to Sound Greenway on Interstate 90 was the first interstate highway in the United States to be designated as a National Scenic Byway.