Interesting, small and almost forgotten road under the highway between Krasny Les and Liebenau across the border. Unfortunately, about 500 meters of the marked route are not asphalted. But in principle the piece can still be ridden on a racing bike. If you fancy something new and little adventures, you should try the route.
A dream in terms of landscape, but the surface is a mixture of cracked asphalt and forest soil. Nevertheless, very chic to cross the border away from any car. Completely passable with the racing bike, albeit slowly.
Not a real racing bike route as there is a forest path. This is partly muddy. If you trust yourself and your bike to do the whole thing, it is an idyllic way to cross the border. On the CZ side, an asphalt bike path then leads to the next town.