High Quality Content by WIKIPEDIA articles! The Mountains-to-Sea Trail (MST) is a long-distance trail, for hiking and backpacking, that runs across North Carolina from the Great Smoky Mountains to the Outer Banks. The trail`s western endpoint is at Clingman`s Dome, where it connects to the Appalachian Trail in the Great Smoky Mountains National Park. Its eastern endpoint is in Jockey`s Ridge State Park on the tallest sand dune on the east coast. The trail is envisioned as a scenic backbone of an interconnected trail system spanning the state. As such, the trail`s route attempts to connect as many trail systems and natural scenic areas as practicable. A little over half of the trail is complete in multiple, disconnected segments across the state.