The regional Route 42 "Aargauer Weg" connects Frick AG  and Muri AG. This FKT is done in either direction, starting at the train station in Frick and finishing in Muri, or reverse. The vertical gain is about the same. It has three detours to train stations or places of interest in the towns of Aargau, Baden and Mellingen, which should not be abbreviated.

You find a perfect description here:

https://www.schweizmobil.ch/en/hiking-in-switzerland/routes/regional-ro…

Medium difficulty

Salmon River - Green Canyon Loop

The Salmon River - Green Canyon Loop has just about everything you want in a PNW trail: lush forests, old growth trees, mountain views, an old fire lookout and an idyllic river. The distance and variety of scenery make this an ideal loop. The Salmon River Trail is very popular, which is why I like to start in this direction before it gets too crowded.  

The Central Hardwoods trail connects the Lake Barkley bridge at Canton, KY to the Eggners Ferry Bridge in Fenton, KY.  This FKT travels the entire width of the Land Between the Lakes (LBL) National Recreational Area and crosses over the famous LBL North/South trail.

It is a 22.3 mile out and back with about 6.5 miles paved asphalt and approximately 16 miles of dirt trails. The trails are exceptionally well maintained and fast.