Driving the Byway
Formerly called the Clearwater Canyons Scenic Byway, Idaho's Northwest Passage Scenic Byway is a 90-mile corridor through some of the most scenic and historic country in the United States. The Byway follows US 12 from Spalding along the Clearwater River to Kooskia, Idaho. From there it follows Idaho State Highway 13 to Grangeville.
The byway is located equidistant between Boise, ID, Spokane, WA, and Missoula, MT in a region called North Central Idaho. Allow 1 hour and 30 minutes for a straight drive; however, if you want to visit and explore some of the Lewis and Clark and Nez Perce historical sites, give yourself more time.