Washington State Vacation-The Cascade Loop Scenic Highway! Beginning just 28 miles north of Seattle, circle through the Cascades mountains, along the semi-arid Columbia River Valley, past glacier-fed Lake Chelan, through the wildlife-filled Methow Valley and North Cascades National Park, and into the Puget Sound. We are a path into nature, a road through friendly towns, and a rest stop at the end of your day with comfortable lodging and delicious Northwest cuisine. The Cascade Loop is the best road trip vacation in Washington State!