I used to do this run regularly about 5/6 years ago. I only do it in periods during which this stretch of the Parkway is closed, as it is now. It’s a great opportunity for some long slow distance and hill training with no vehicles and often no other human being (as was the case today). Great views on the way back of Downtown Asheville and the Biltmore Estate. I did this once at dusk and that was spectacular.
Here are the details from My Garmin. This might be a good training run for the Bearwallow Beast, although this run has an elevation gain of just over 900 while “the Beast” climbs 1,300.