You can go either direction by starting in Massies Mill or Steeles Tavern and taking VA-56 (Crabtree Falls Road).
This is a fantastic rustic road through the Blue Ridge Mountains that follows Crabtree Creek. It crosses the Blue Ridge Parkway as well so this is a great way to start your adventure on the parkway either north or south.
The road is in great shape with the occasional blip here and there. Watch for fallen rocks and gravel. I saw some big rocks but no gravel.
There's not much along this small route but there are some tourist stops along the way. There are also waterfalls so you can stop and check those out.