Blewett Pass, at an elevation of 4102 ft. (1250 m.) above the sea level, is a mountain pass in the Cascades in Washington state crossed by U.S. Highway 97.
Named for Edward Blewett, a Seattle mining promoter of the 1880s, it lies on the route of the historical Yellowstone Trail.
It connects Interstate 90 between Seattle and Ellensburg, Washington with U.S. Highway 2 between Monroe, Washington and Wenatchee.
Blewett Pass was formerly known as Swauk pass. The Old Blewett Pass summit is about five miles west of the current summit.
