If a road can be too twisty, this one would be a candidate. Corners most of the time. This is a road where you dont have to use much power since the corners are so tight and the straight sections are few and short. In other words, you can have fun regardless of engine size.
Watch out for gravel near unpaved joining roads.
Some parts has great road surface, while other parts are poor, so the mixed bag gives it a 2/5 for road surface, even though most of the road is quite good.