This is the first stage and allows you to gain altitude at the foot of the Disgrazia group. The route ascends the Val Torreggio to Rifugio Cometti. The highest point of the route culminates at the summit of Sasso Bianco 2490m, a place that offers a wide 360-degree panoramic view from the Adamello Group to Monte Rosa, from the Valtellina Orobie to the Disgrazia, and up to the Bernina. It is possible to reduce the length and effort by choosing, depending on your needs, the ascent to Piasci with private services or taking the variant that from Piasci leads directly to Rifugio Bosio. Another variant is indicated from the Upper Arcoglio alpine pasture to the church overlooking Valmalenco.
NOTE: The road from Torre Santa Maria to Alpe Piasci is passable, subject to purchasing a permit at the Torre di Santa Maria municipal center at the price of 5 euros per day