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. 
 

Mike Womack submitted this classic, technical traverse in Yosemite National Park:

Start and Finish in the north Tenaya Lake parking lot. Start by climbing the NE buttress of Tenaya Peak (5.4 - 1500'), then climbing Matthes Crest south to north (5.7 - 5,200'), then climb the SE buttress of Cathedral Peak (5.6 - 600'). Then hike back to the north Tenaya Lake parking lot. All in all, it's about 7,300' of technical climbing with about 7 miles of hiking.