Gravel circuit of Sundgau 51 km the Land of ponds

This 50 km circuit alternates small secondary roads, cycle paths and white paths. You can start the route at the Cosec in Hirsingue or in the car park of the old Hirtzbach station. The sector between Hirsingue and Altenach is exclusively on paved roads. The Gravel portions are located in the Largue valley between Altenach and Heimersdorf. They are very varied! A beautiful course in perspective!