Quite a nice circular route of about 550 km, over one or two days.
https://www.tourenfahrer.de/tour-datenbank/tour/morgens-um-fuenf-844/detail/
Scroll down and then zoom into the map. It would be easy enough to create for yourself.
It even has things to see and do, click on the links in Haltepunkte / Tipps
Places to stay? Easy, tap on the bed icon. Play around, you can’t break it.
https://www.tourenfahrer.de/tour-datenbank/tour/morgens-um-fuenf-844/detail/
Scroll down and then zoom into the map. It would be easy enough to create for yourself.
It even has things to see and do, click on the links in Haltepunkte / Tipps
Places to stay? Easy, tap on the bed icon. Play around, you can’t break it.