The highest peak of the Zillertaler Alps, the Hochfeiler! Magnificent views from the summit, a very alpine environment reachable by comfortable trails for 99% of the way. Final section is a snow ridge, be careful here. Start and finish is the parking. The route is well indicated by signs. You can skip the detour to the hut, shaving about 5 minutes off your time.

Route description: https://www.almenrausch.at/touren/detail/hochfeiler-3509-m-aus-dem-pfitschertal/

Based on the tourist route “The Great Valday Trail”, which is 59 kilometers long.

The route of the Great Valdai Trail is designed for five to six days of hiking. It is divided into sections by base camps - equipped places for overnight stays, there are toilets, places for making fires and collecting garbage. It is possible to start your journey along the path, as well as get off at any site. Visiting the route is possible with the observance of three basic rules: do not go off the trail, set up a tent and make a fire only in the base camp, do not cause damage to the environment.

Described here:  https://www.alltrails.com/trail/us/colorado/west-maroon-trail

This is an out & back route.  It can be run starting from either end.  If starting at Maroon Lake the first/last ~ 7 miles is part of the super classic Maroon Bells 4 Passes Loop.