Roll out of Grassobbio and the route unfolds as a chain of castles and green spaces. You pass Castello Rivola and Castello Camozzi Vertova, cross the Cherio river, then spot the Torre Rotonda di Mura. A nature reserve and the Oglio river lead you to Rocca Viscontea before the loop brings you home. All 69.4 km are paved, with 221 m of climbing along the way.
