Counties crossed: Blount County →
Sevier County →
Cocke County →
Greene County →
Unicoi County →
Carter County (where it leaves the North Carolina border) →
Johnson County →
Sullivan County , formerly known as Clingmans Dome Tennessee has of the trail, including more than along or near the North Carolina border. The section that runs just below the summit of
Kuwohi (formerly Clingmans Dome) in
Great Smoky Mountains National Park is the highest point on the trail at . The trail enters Tennessee from North Carolina atop Doe Knob and exits Tennessee into Virginia atop
Holston Mountain. The first of the A.T. in Tennessee follow the crest of the Smokies, and are largely shared with North Carolina. In the western Smokies, the trail traverses a young forest that replaced what was once a large highland pasture, most noticeable in areas such as
Spence Field,
Thunderhead Mountain, and
Silers Bald. The trail reaches for the first time on the western slope of Mount Buckley (a sub-peak of Kuwohi), where it first enters the sub-alpine
spruce-fir forest, and comes within a few meters of the summit of Kuwohi. The trail crosses
U.S. Route 441 at
Newfound Gap and traverses a series of rocky cliffs known as "The Sawteeth" en route to the high ridges of the Eastern Smokies. Here, the trail crosses
Mount Chapman and
Mount Guyot, and passes one of its most remote shelters at
Tricorner Knob before gradually descending. Just beyond
Mount Cammerer, the A.T. exits the Smokies, crossing
Interstate 40 into the
Cherokee National Forest. After traversing Snowbird Mountain,
Max Patch Bald, and Lemon Gap (just south of
Del Rio), the trail exits Tennessee atop Bluff Mountain and re-enters again atop Rich Mountain (in
Greene County), some to the northeast. After traversing the
Bald Mountains, the Appalachian Trail crosses the
Nolichucky River and enters the
Unakas, gradually ascending to the
Roan Highlands near the town of
Roan Mountain in
Carter County. Atop Roan High Knob, the A.T. again eclipses 6,000 feet (approximately ), and passes the highest shelter along the entire trail. After crossing Grassy Ridge, which is the longest stretch of
grassy bald in the Appalachians, the trail descends to the Laurel Fork Valley, where it turns west away from the state boundary. Just beyond White Rocks Mountain, the trail passes through
Hampton, Tennessee, before turning north again. At
Watauga Lake at the TVA
Watauga Dam, the trail turns northeast, crossing Iron Mountain before turning briefly to the northwest at the
Carter County-
Johnson County line. After passing over Cross Mountain, the trail again turns northeast and ascends
Holston Mountain en route to Virginia. ==Virginia==