Mixed surface and beautiful adventure. The out and back to Huntsville could be amended, or omitted altogether if needing to shorten this one for some reason. There is a gas station with grill and deli in Huntsville, food was pretty good. 22 miles in you’ll arrive at Hembree’s in Smoky Junction, best bologna-n-cheese samich around! They’ll put lettuce and tomato on it with mayo or whatever if you like. The church at about 30 miles has a water spigot on the back of their gathering hall as well. This one starts with a big paved climb and descent, then about ten beautiful, mostly undulating miles to Hembree’s. About 6 miles of gravel. The out and back to Huntsville seemed like at least 50% gravel, some beastly climbs and descents too… Load up on water for the trip back to Caryville. You’ll have about 4 miles on Hwy 63, but there is a good shoulder to ride. Enjoy!