Always call ahead to see what vehicles are allowed into each area.
Boundary Dam and Pend Oreille River, Metaline Falls, WA -
Colville National Forest , Colville, WA - Less primitive recreation includes snowmobile and motorcycle trails, scenic drives and a downhill ski area.
Juniper Dunes Wilderness, Pasco, WA - About 4,000 acres are open and 8,000 acres are earmarked for roads and trails. Roughly 7,000 acres of the Juniper Dunes Wilderness area are closed to all vehicles to protect the delicate dunes and junipers.
Mount Baker-Snoqualmie National Forest , Mountlake Terrace, WA - It contains eight wilderness areas, 1,430 miles of hiking and riding trails and an active volcano, Mount Baker, that emits steam through cracks in its glaciers.
Olympic National Forest , Olympia, WA
Please send me suggestions.