The route starts at Sentier du Massif trailhead in Notre-Dame-de-la-Merci and ends at the end of sentier des Contreforts trailhead on Chemin du Lac Clair in Saint-Côme.
These trails are very technical especially the Contreforts section. It has a lots of ups and downs, a ton of roots and rocks. Theses trails are parts of the sentier national so it is well marked up with red and white signs, you just need to follow them. There are almost no emergency exit and no road crossing so keep that in mind but this make this route special for his remote aspect. You will see a lots of beautiful views along the route and huge rock boulders.
Here are the official website for more information regarding these wonderful trails: https://parcsregionaux.org/parc/sentier-national/#tab6
