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Welcome to the Mountains to Sound Greenway National Heritage Area
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.
The Mountains to Sound Greenway Trust has been working for 35 years to conserve and enhance this incredible landscape — building and maintaining trails, restoring wildlife habitat, and connecting youth to the outdoors through environmental education. Through our mission, we strive for a long-term balance between people and nature.
Protect the Middle Fork Snoqualmie Valley’s Future … Forever.
The Mountains to Sound Greenway Trust is leading the charge to create a $10 million self-sustaining Stewardship Fund to ensure long-term care of the Middle Fork Snoqualmie Valley. This fund will support trail and recreation maintenance, ecological monitoring and restoration, visitor education, and other critical stewardship efforts for generations to come.
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