First of all thank you for all the details. Absolutely amazing hiking. You basically get what you need: river, mountains, views, waterfalls, forests, beaches etc. It is not an easy one in terms of the time and effort but definitely worth it. I recommend taking regular breaks, enjoy these places but also using the outdoor app for directions. Not sure if that's true but this route seems to be created out of a few different routes and I found it only sometimes challenging to take the right turn. But the app with GPS helped :) it was just beautiful!
Rundwanderung: Caumasee - Rheinschlucht "Swiss Grand Canyon"Details