Distance: 29,5 km
Difficulty: difficult
Overall gradient: 1.369 m
Uphill gradient: 686 m
Downhill gradient683 m
Asphalt stretches: 8 km
Dirt track stretches: 21,5 km

The itinerary covers the municipality of Montecolombo, an ancient Roman town (Castrum Montis Colombi). It begins in the car park on the PR in Osteria Nuova and follows the road on the right (Via Colomba). After the bridge over the Conca River, start to climb towards Montefiore as far as the junction (1.25 km). At 1.67 km turn right on the dirt track then after a series of climbs and descents (3.95 km) head into the wood following the path and cross some fords. Out of the wood (8.09 km), at the junction turn right onto the Molino Rocchi road and at the junction (8.48 km) climb to Castelnuovo (10.95 km). With the entire route to be covered on the right, the road continues to climb the crest of the hill as far as Piandicastello church (15.21 km). Top up with water at the fountain then get back on the dirt track towards the cemetery. A few metres before the cemetery, turn left along the path that leads to the highest part of the itinerary (552 m asl). From here, descend to Onferno Castle. Given the precarious state of the land we recommend dismounting. There are many attractions here as it is an area of outstanding natural beauty. It is possible to visit the museum and grottoes mentioned by Dante in his “Divine Comedy”. Continue on the asphalt stretch uphill then on the long, straight descent as far as 19.87 km where the itinerary turns right, back onto the dirt track. Follow the crest of the hill, keeping the village of Gemmano on your right. A series of climbs and descents on hard, dusty terrain will test your bike. The itinerary continues on asphalt (22.15 km). Turn left and follow the PR towards Gemmano as far as Via Conventaccio and after a short climb on a dirt track head down to the valley floor following the path halfway up the hill, through lush greenery to Carbognano church (26.47 km). There are spectacular views of the valley from here and the arrival point is nearby. This stretch is asphalt and the fast descent ahead leads back to the bridge over the River Conca and continuing as far as the crossroads and turning left leads back to Osteria Nuova.