Napa to the Shores of Lake Berryessa - By tr34d

Fun road, very remote. The road quality is poor, and is unpaved in sections. During rainy months, the local creeks flood the road. I've not see a single other vehicle on the road when I've gone. Enduro would probably have the most fun here. Going from North to south it spits you out at Berryessa, where the road quality notably improves and traffic picks up slightly. Overall expect great scenery but slow riding. Be aware that you may have to turn back at some point if the road is flooded and plan gas accordingly.