There is a two mile walking/fitness trail that follows the Watauga River. The trail also accesses Sycamore Shoals Hospital which is adjacent to the park
Sycamore Shoals State Historic Area is located in Carter County on U.S. Highway 321, in Elizabethton, TN. Situated on the Watauga River, the 60-acre area is 30 miles from Interstate 81. From Exit 57 on I-81, take I-26 into Johnson City to Exit 24. Then take Highway 321/67, traveling approximately 6 miles into Elizabethton. Sycamore Shoals Historic Area is on the left.
http://www.tripleblaze.com/trail.php?c=3&i=5518