Stokes County and other places...
From Lewisville a couple of hours will take you up and around Hanging Rock mountain, using a lot of the roads King Jarhead mentioned above - about 100 miles. Add another hour and you can hit Vashti and Brushy Mountain to the west or Pine Swamp Road above Roaring Gap to the north. Four hours could include breakfast at Tuggles Gap. Then there is always Troutdale and VA 601...but that takes half a day at least. Essentially no traffic and plenty of nice views on any of these routes.
I love western Forsyth County.