Thornton Lake   Be the first to submit input for Thornton Lake. If you have info on Thornton Lake, Northern Cascade Range, Snohomish County, Washington please submit it here to improve this web site.          These outdoors activities are available near Thornton Lake.   Lakes Near Thornton Lake: Boulder Lake, Skagit County, 8 miles away Caskey Lake, Skagit County, 15 miles away Boulder Lake, Snohomish County, 17 miles away   Public Lands Near Thornton Lake: Rockport State Park, Washington, 19 miles away Wallace Falls State Park, Washington, 23 miles away Wenatchee National Forest, Washington, 36 miles away Lake Chelan National Recreation Area, Sedro-Woolley - WA, 55 miles away North Cascades National Park, Sedro-Woolley - WA, 55 miles away Ross Lake National Recreation Area, Sedro-Woolley - WA, 55 miles away   Camp Grounds Near Thornton Lake: Crystal Creek Campground, Snohomish County, 3 miles away White Chuck Campground, Snohomish County, 5 miles away Bedal, -blank-, 5 miles away Bedal Campground, Snohomish County, 5 miles away   Hotels Near Thornton Lake: Monroe Motel, Monroe, 41 miles away The Old Hen Bed & Breakfast, North Bend, 42 miles away Best Western Sky Valley Inn, Monroe, 42 miles away GuestHouse Inn & Suites Monroe, Monroe, 42 miles away Salish Lodge And Spa, Snoqualmie, 43 miles away   Hiking Trails Near Thornton Lake: Meadow Mountain Trail, Snohomish County, 10 miles away       13.4 hiking miles, 4096 feet elevation difference Lost Creek Ridge Trail, Snohomish County, 11 miles away        20.6 hiking miles, 4949 feet elevation difference Camp Creek Ridge Trail, Snohomish County, 12 miles away        9 hiking miles, 4047 feet elevation difference   Ski Areas Near Thornton Lake: Stevens Pass, Washington, 25 miles away       1800 foot drop, 10 lifts, 37 runs   Whitewater Near Thornton Lake: Whitechuck River, SnohomishCounty, 3 miles away       Class IV - 6 miles long (Bridge above Crystal Creek to Sauk River confluence) Sauk River, SnohomishCounty, 5 miles away       Class III+(IV) - 7 miles long (Whitechuck River to Clear Creek) Sauk River, SnohomishCounty, 5 miles away       Class II-III - 8.3 miles long (Bedal Campground to Whitechuck River)