This is an outstanding hike, however it is not for the faint of heart. I only recorded the track in one direction so the milage is really more like 7 miles. The elevation gain is 2752. The most important thing to know about this hike is that the AllTrails black dotted line headed to the top of Black Rock is off by a bit. I think there must have been a path there at some point, but we couldn't follow it. There is a well established trail about 1/4 mile to the east, heading towards the Blue Ridge Parkway and then turning left uphill towards the top of the mounting. The sings are easy to follow. The views from the top are amazing! 320 degrees or so.