This mountain bike loop is a challenging ride that takes you through the hills and valleys of the Lake Como region. The route starts and ends in the town of Dongo, where it is recommended to visit the Museum of the End of the War. This loop features a variety of challenging sections, including climbs on asphalt, mountain roads, mule tracks and trails characterized by tight bends and significant slopes. Starting from Dongo, take the road to Musso. Once you have passed through the town of Musso, you will reach Pianello del Lario, where you will start an uphill climb towards the Monti di Dacca. The first part of the route is on a 4-km asphalt road, then you will continue on a trail that crosses the valley of the Musso Stream. Here you will rejoin the agro-silvo-pastoral road that leads to the Monti di Labbio. From this point, the route features winding curves, unpaved stretches and trails until you reach the Bocchetta di San Bernardo. The climb continues to the church located on the grassy slope of Monte Bregagno, which is the highest point. This is the perfect place to admire the magnificent view. The descent is characterized by very steep sections on trails and mountain roads. You will start from Sasso di Musso to descend towards Monte Cortesello, crossing the grassy ridge above Sasso di Musso and passing through the Lami Rosso Stream. During the route, there are numerous stream crossings, so it is advisable to be careful of the high water levels, especially after periods of rain or snow. Some sections of the trail can be exposed and characterized by significant slopes. The bottom of the route is irregular, at times rocky. The descent continues in the valley of the Lami Rosso Stream and towards the alpine pastures of Mutadello and Guaggio. It is important to follow the GPS track carefully, when, shortly after the locality of Guaggio di Sopra, you will need to take a road that turns right to access the trail that leads to the localities of Costa and Tegano. This section also features very steep and steep slopes, with a continuous up and down along the ridge. The return to Dongo is comfortable on paved roads. Along the entire route, it is possible to refill water. The ascent in an e-bike is recommended, without the assistance of the engine, this route can be extremely challenging in the steepest sections.