The route runs through the Valvarrone and is challenging. It starts from Dervio, which can be reached by car via Provincial Road 72 that scenically crosses the towns on the eastern shore of Lake Como, halfway between Lecco and Colico, or from State Road 36 Milan-Lecco with the Dervio exit; there is parking in Via Santa Cecilia; the Dervio train station is on the Milan-Lecco-Sondrio-Tirano line (80 km from Milan). It starts by going up from the Dervio lakefront, following the sign for Tremenico. Valvarrone is the most rugged and scenic part of the eastern shore of the Lario; Mount Legnone, which divides it from Valtellina, is the highest peak in the Lecco area, on the collar below Mount Legnoncino. The ruggedness of the places did not stop an early human settlement, due to metallurgical workings in the Valvarrone Mines, of Premana. Along Valvarrone's SP67 road, one first encounters the Derviese hamlet of Castello, a lovely cluster of houses dominated by the tower of Orezia Castle. Then, pass through the villages of Vestreno, Sueglio, Introzzo and Tremenico, with the still functioning mine clearly visible at the bottom of the Varrone gorge, and the nearby hamlet of Avano with an interesting nucleus of well-preserved rural houses. At many points on the ascent there are wonderful views of upper Lake Como. The stretch of road winding through the woods leads to Pagnona, and then coming up to the junction for Premana, the 18 km of ascent just completed is overcome. To get to the village, world-famous for its handicrafts, especially in the manufacture of blades and cutlery, you need to keep to the left and continue for 1 km uphill. The finish is in the church square at 951m asl.