IT’S A GREAT ROUTE for viewing the longest chain of volcanoes in the continental US. It’s also dizzyingly long, with a total distance of 2,392 miles.
Starting from it’s northern end in Sumas, Washington, the route curves through North Cascades National Park and on to Mount Rainier, the most heavily glaciated peak in the continental US and one of the first volcanoes on the route. It continues through Yakima, in Washington’s wine country, after an optional spur to Bellingham.