North Hermitage Street (B6357)
A remarkably straight and beautifully sighted run down through Newcastleton and the borderlands. With the lowest curvature density on the list, it is less a road to be worked and more one to be enjoyed for its sheer, sweeping scale. The tarmac is broad and smooth, offering a deeply satisfying, low-stress drive.
The long straights are frequently intersected by farm tracks; watch for mud dragged out onto the road after heavy rain.