From the picnic area of Pinea, take the road leading to the Ice house (section of the Ecomuseum Colombano Romean). The following 900m climb with steep hairpin bends among Scotch pines and reach the meadow at Piano della Buissoniere (1,309m).
On the right there is a track connecting with the road of Sersaret, while the trail begins to climb again in the heart of Gran Bosco. At 1,790m the trail joins on right trail no. 1 and ends at 1,850m on the road of Seu.