It is a National Park Service Historic Trail with a printed guide describing places and events followed by the Overmountain Men in 1780. There is a small visitors center in Abington and a very good museum at Sycamore Shoals State park plus fort Wataugs. The trail goes to the National Battlefield at Cowpens where the Overmountain men readied for the battle at Kings Mountain. There is an NPS National Battlefield at Kings mountain.
It is a great trip through the back roads of East Tennessee and Western North Carolina.
There is a very good NPS staffer at Kings mountain who researched all the various Revolutionary battles. Surprisingly, there are far more in SC than any other colony with New Jersy coming in second.
I haven’t done the entire trip but have been to most of those places. I had at least one ancestor among the Overmountain Men. (I still have relatives in Elizabethton, Marion, and in between.)
Morgan’s brilliance was in how he dealt with and used the militia. He didn’t try to get the militia to act as regulars; he used their strength and weakness to his advantage.
If you’ve never read it, I’d recommend The Road to Guilford Courthouse by John Buchanan.