Entre Autun Le Creusot

80% of the walk is in undergrowth (6 km (PRM)-8-12-17- 25 km (walking). 24-39 km (mountain bike)). Refreshments every 6 to 7 km and at the start and plate at the finish.
In addition to the start and finish for pedestrians: 1 for 12 km, 2 for 17 km, 3 for 25 km.
In addition to the start and finish for mountain bikers: 2 for 39 km and 1 for 24 km.