We continue through the beech wood until the field of Montelleri. From here the route deviates to the left and begins its ascent towards the summit of Falterona. To directly reach the peak, which is indicated by a wooden cross, you follow route number 3. It is worth however slightly extending the itinerary, by taking the trail on the right that, in about half an hour, takes you to mount Falco, the roof of the Casentino, at 1.658 m above sea level.
The path takes us onto a ridge in a mild ascent until the grassy summit of the Falco. Its summit is a splendid balcony overlooking both the Tuscan and the Emilian slopes, representing the Apennine divide.
To conclude the circular route, we follow the ridge that leads to the summit of Falterona and take route no. 16 GEA on the right that descends into a dense pine forest. Still in descent, the ridge becomes steeper and rockier, after which it returns into a beech wood that takes us to the locality of La Stufa in the valley. Turning left, after a couple of minutes we reach the starting point of Fonte del Borbotto.