This is the best-known way to climb Cimone on foot. You start at Lago della Ninfa, at about 1,500 metres, and take municipal trail 13 bis, dedicated to Pio Serafini, which climbs through the woods and then comes out onto the high pastures. At 1,632 metres you reach the Bedini spring, with fresh drinking water; higher up the landscape opens onto meadows where marmots are often seen, and as you climb, Lago di Terzo comes into view.
Continue on trail 441 and its variant 441A for the last stretch, steep and fitted with steps, up to the summit at 2,165 metres, with the Air Force station, the CNR observatory and the 1908 chapel. On clear days the view ranges from the Alps to the Adriatic and the Tyrrhenian Sea.
To come down you can take trail 449, the «Sentiero dell’Atmosfera», and turn towards Lago dei Bagni to close the loop, then return to the starting lake along the same route as on the way up. The climb is exposed to wind and sun: you need boots, water and a jacket, even in summer.