The Cascade Loop Scenic Byway is a 440-mile-long (710 km) National Scenic Byway and Washington State Scenic and Recreational Highway encircling the North Cascades in the U.S. state of Washington. It follows eight different numbered highways: * US 2 from Everett to Sunnyslope; * US 97 Alternate from Sunnyslope to Chelan; * US 97 from Chelan to Pateros; * SR 153 from Pateros to Twisp; * SR 20 from Twisp to Coupeville; * SR 525 from Coupeville to Mukilteo; * SR 526 from Mukilteo to Everett; and * I-5 in Everett