Today will be the longest and more demanding of the 4 days excursion.
Leaving Nicelli by the road situated on the north/west outskirt of the village, you will find a signposted path on the left that will continue (along the way disregard two connecting trails on the left) to the "Il Fontanone" on the way to the village of Pescina (1019 m. asl; approximately 7 km away).
At the "Fontanone" keep to the path on the left (a shortcut).
Continuing north/west bound will keep east of the Cima Liscaro (1306 m. asl) and proceed to the Sella dei Generali (1238 m. asl).
At the junction with the provincial road #57, just before cresting the Sella dei Generali (1238 m. asl), follow the road in the direction of Peli and SS #45 (signposts). In about 300 meters you will see, on the left, a signpost indicating the trail to Pescina (1019 m. asl) which will be reached in about 1 km.
:::.. Nicelli - Pescina Map (PDF)
In Pescina you connect with the road on the south/west outskirt of the village and head north/west bound towards Cornaro.
At the junction, on the left, with the road to Fossoli, you will see a signpost illustrating the times for Faraneto (.30'), Coli (1hr 45') and Bobbio (3hr 45').
At the following intersection, 100 meters before reaching S. Rocco (970 m. asl) you can follow either path; the one on the right will take to the S. Rocco oratory, through the sparsely group of houses, and converge with the other path on the left and continue towards Faraneto (955 m. asl; 1.5 km from S. Rocco.)
:::.. Pescina - Faraneto - Google Map
:::.. Castello di Faraneto
In Faraneto the path bends sharply to the left through the woods for a couple of kilometers.
You will reach first the Magrini castle in about 2.3 km, followed by the group of houses of Magrini and shortly thereafter the path will deviate left towards Coli (638 m. asl), reaching Piazza Moro in about 1 km.
:::.. Faraneto - Coli Map (PDF)
Once reached the Piazza the path to follow is to the right turning onto the second street (the first street is a dead end) on the right which is the provincial road #57 and also the Via degli Abati trail #159.
In about 80 meters take the path to the left - Via degli Abati #159. In about 250 meters the path splits in 2; keep to the left and then follow the bend to the right.
At the intersection with a narrow paved road, instead of crossing it and continue on the path indicated by the signpost, turn left and follow the paved road and in about 350 meters you will notice a path on the left (shortly after you will notice a path to the left, just keep going on the right) which will take you to Casa Belocchi in 1.5 km.
Once you reach the next road, turn left towards the Casa Bellocchi to pick up the next trail which is next to a house (indicated by the civic #1) with 2 sets of flight stairs on the outside. At the end of the of this "street", just past the last house, you will follow the trail to Cascina Pre and in 2 kilometers, from Casa Bellocchio, you will reach the "Ponte Gobbo" in Bobbio.
On this section of the trail you will cross other roads and path; just disregard them.
:::.. Coli - Bobbio Map (PDF)