The first time I rode Detour Road the pavement was in horrible shape making it near an adventure road. However, sometime in the intervening years it has been repaved. Interestingly the follow on road, Magnolia Road, which previously had good pavement is, as of July 2021, pretty torn up. This just point to the idea that these roads need to be revisted. Detour road is technical, nice, wooded, with some good views. There are a moderate number of houses on it and little traffic.
This is a very small driveway and a half sized mountain road through thick forest. There are streams, corners, bounces, and twists. There are a few houses and some strange camp along the way. There is no way to go North once you reach 15. It also features some distressingly close to the pavement telephone polls. I make it a point to show anyone I take up here this road.
This is one of the most beautiful rides in the area. It's a twisty small mountain road through the park. On weekdays there's virtually no traffic. It's a constant tree tunnel with sharp corners and signficant elevation changes. The forest around here looks like something out of Tolkien.
This lane and a half unmarked road winds and twists and curves along the Holston River for many miles. Most of the pavement is in good shape though you will find areas where the road is a bit bumpy and gets even narrower. Shady, cool, lots of river scenery, I really liked this road a it was sceneic yet covered the distance efficiently.