From the Wasserkuppe, the Fuldaradweg, along the Weser to Bad Karshafen, from there via the Diemelradweg to Brilon and finally the Möhnetalradweg to Rüthen. A great tour.
As already described here, the path is only accessible with difficulty. I tried a bit, but then stopped at some point 🤷♂️. It's really a pity, because the creek valley is very romantic.
This is a tour that you can do well, if you want to make straight paths without great altitude, also suitable for bicycles. Now and then you can get to …