Daniel Fagerlund submitted the route, which is a 105km loop through the Vålådalen Nature Reserve:

The Haute Route Pyrenees (HRP) follows the French and Spanish border, starting in Hendaye on the Atlantic coast and finishing in Banyuls-sur-Mer on the Mediterranean. Large sections of the route remain unmarked.

Flat and fast gravel path. Used to be a railway. Starts in Oldcastle and heads south. Passes by Mcgregor, then curves east by Harrow. Continues east through Kingsville. Ends in Ruthven.

https://www.alltrails.com/trail/canada/ontario/chrysler-canada-greenway

Vedran Gračan submitted this route.  The description is in Croatian, which you can run through Google Translate.  It seems to be a 280-km loop road in the mountains of Croatia.  The route is divided into 3 sections, with a total of 41 Control Points, which Vedran lists below.  This website (from which we pulled the map below) has some more information.  Vedran also said "It was considered 280 kilometers, but is definitely more than that.