A 130km coast-to-coast route following mainly path, gravel roads and some bike path - traversing mainland Denmark.

https://www.kyst-kyststien.dk/ 

The objective is to cross Texas on foot, on roads, at its widest point by the shortest means / time possible in the safest practical way. Any route across the widest part of the state that does not make substantial use of illegal, dangerous, or private roads should be considered equivalent. Runner may select route -- does not have to be the exact GPX uploaded here.  Approx. 850 miles.

It's one of the most amazing trekking routes on Perú that join two of the biggest attractive archeological sites in the area. Choquequirao, known as the little Machu Pichu, and Machu Pichu. Around 110km with 7000m+ of vert climb. The normal trek takes 8-9 days, there are some people that have done it in around 2 days.

85km, 1,218m ascent, circular off road route on footpaths around the town of Aylesbury, touching the northern edge of the Chilterns. The route is marked by signposts with a special logo. 

https://www.ldwa.org.uk/ldp/members/show_path.php?path_name=Outer+Aylesbury+Ring has more details. 

Note that this is the longest of 3 Aylesbury "ring" routes: