1. North Carolina’s Mountains-to-Sea Trail starts at Clingman’s Dome and travels 947 miles to the Atlantic. Highlight: 82 miles of beach trail on the Outer Banks.
2. Most hikers spot more bears than people in the mountains and pine forests of the 223-mile Ouachita Trail in Arkansas and Oklahoma. Recommended campgrounds: Winding Stair and Big Brushy.
3. Traversing Utah’s Uinta Mountains, the aptly named Highline Trail stays above 10,000 feet for the better part of 100 miles.