The loop stage from Izon-la-Bruisse is of course optional... But it would be a shame, if you have the time, not to climb the extraordinary crests of the Montagne de Chabre and explore the little wild paths around Izon-la-Bruisse!
The difficulty of the route lies in the length of the stages, but apart from a few not very technical sections on the Crêtes de Chabre, and a few very short sections where the route is not obvious, the paths and tracks are very accessible.
Izon Nature offers unusual accommodation (tiny-houses and cabins), rooms and a table d'hôtes in a truly wild environment.