Roll out from the parking at Parc naturel régional Jura vaudois and let the route unfold past the river L'Aubonne before climbing into the nature reserve itself. Onward you pass the castle of Lavigny, then follow the Boiron down toward the castle of Morges and the river La Morges. Of the 61.2 km, a good share runs unpaved, and the ride gathers 743 m of climbing before bringing you back to where you started.
