Exciting loop route of Mount Legnoncino. Route designed for experienced bikers. The route starts from Vestreno, in Valvarrone, there is the possibility to park the car at the parking lot of the Eco Museum of Valvarrone, arriving there by SP67 from the towns of Dervio and Premana. Starting by taking the scenic winding road that leads toward the village of Sueglio, continue by taking the Molini Valley mule track that passes by the Molino dell'Incannatoio until you reach Introzzo. The climbs along the route can present challenging sections, characterized by sometimes uneven and rough terrain. Along the climb there are several rest stops and fountains with drinking water. Leaving the settlements, the climb begins to become more challenging as you continue to the Roccoli Lorla Refuge. From here, you can follow the military road along the old trenches of the Cadorna Line until you reach the summit cross of Mount Legnoncino. At the top, a magnificent panorama stretches over the area surrounding Lake Como and the central Alps as far as Valtellina; a few meters below from the summit it is possible to see the small church of San Sfirio. The route continues with equally challenging descents through mountain trails and dirt roads. From Roccoli Lorla to Artesso and Sommafiume on sections of trail and military mule tracks. Dexterity and caution become essential to deal with the uneven terrain safely. One crosses downhill the hamlet of Sommafiume, about 3km after the Marategna quarry where one turns right at the marker post and then continues on a mule track passing the hamlet of Monte Campiglione and Vezzè. Continue downhill on the north side slopes to Alpe Fangaroo to rejoin Via ai Bacini and resume the last 5km to Vestreno, for a section of Via ai Bacini is uphill to Monte Piazzo. From here, downhill and flat sections resume. It is possible to stop at the Sanctuary of Madonna di Bondo and refuel with water while admiring the view. The loop ends passing by the Armored Barracks at Paùl to return to Vestreno.