Johannes Rummelhoff submitted the route:

https://www.pc.gc.ca/en/pn-np/ab/jasper/activ/passez-stay/arrierepays-backcountry/sugg-sentiers_trip-ideas/Skyline

The route around the lower lake of Lake Constance takes you 72,5km through Switzerland and Germany starting on the bike-bridge in Konstanz, passing through Stein am Rhein and Radolfzell to end once again in Konstanz.
It's mostly run on bike-paths with a couple of kilometer run along roads. At its core the route always stays as close to the water as possible with a couple of exceptions in order to keep it from becoming overly twisty. It also runs all along the coast of the "Höri" peninsula, not taking the shortcut over the hill a little further inland.

A 104km route that circumnavigates and summits 22,838ft Aconcagua, the second highest of the Seven Summits.