From La Rodia, discover Mount and Fort de Brégille, on a route evolving mainly in the woods. The main difficulty is a steep climb after 2km. You will appreciate all the more the next part of the route, with an easier ground, with an alternation of single trails and paths in forest. Arrived at Fort Bregille, enjoy the exceptional view of the Citadel and the old town before running down into a more urban area. You will join Beauregard fortress before running along the Doubs to return to departure.