Lauscha > Konstanz, Road (fastest)

450k H1.7k via Camping Hammerschmiede halfway

https://bikerouter.de/#map=8/49.724/10.080/osm-mapnik-german_style,Waymarked_Trails-Cycling,camp_site,route-quality&lonlats=11.158166,50.475604;9.976106,48.945837;9.268016,47.693804&pois=10.606401,49.020181,Zeltplatz%20km215;10.725876,49.144808,zeltplatz%20km195

look for ferry here:
https://www.bsb.de/de/fahrplan?from=55&to=52&date=2025-08-08&time=21:30&bicycle=true&middle=undefined

last departure 20:30 (summer)