Mt. LeConte & Alum Cave
(11 miles round-trip, strenuous) The Alum Cave Trail is the most-hiked in the Great Smoky Mountains. You'll see why, with interesting geological features and stunning views. To reach the 6,593-ft. summit of Mount LeConte (third highest peak in the Smokies), you'll climb 2,853 ft. in elevation in 5.5 miles.