Historical and tough route from Thusis (Graubunden, Switzerland) to Chiavenna (Italy).

More info available here:

https://www.viaspluga.com/en/itinerario/via-spluga/

Le GR de Pays Tour d'Oueil-Larboust permet de découvrir l'ensemble des sommets luchonnais:

https://www.mongr.fr/trouver-prochaine-randonnee/parcours/gr-de-pays-to…

Marselisborg (red) track is a 26 km long MTB track located immediately south of Aarhus city center in the scenic area of Marselisborg forests.

The track is very well fitted for trail running. It is moderately difficult and especially when including the red segments quite challenging.