|Length||100 mi / 160.9 km|
|Time to Allow||1.5 to 2 hours to drive the byway.|
There are no fees along the byway proper.
Drive east from Seattle on I-90 through pastoral valleys, lush forests and a dramatic mountain landscape. Visit historic towns and scenic spots for forest walks or challenging hikes. Cross the Cascades into a drier climate where coal mining built pioneer towns on the way to the Columbia River.
Mountains to Sound Greenway - I-90
Washington State Tourism Div.