Beautiful ride on the two banks of the Adda, the Milanese-Lecco one and the Bergamo one. I made the loop clockwise starting from Cornate d'Adda, adding a couple of classic climbs in the area, one at the beginning (that of the mill) and one at the end (the fountain). The tour is worthwhile even without the two climbs, the "Milanese side" mainly features a dirt road, which runs along the Adda and allows you to visit the Leonatdesque places, with the Esterle and Bertini power plants, then passing by the Rocchetta sanctuary, up to the famous bridge of Paderno d'Adda or Calusco, if you prefer, dating back to the end of the 19th century. Go up the river to Brivio via the Imbersago ferry, also by Leonardo's studio. From Brivio you pass on the Bergamo side and you immerse yourself in a row of really exciting single tracks, go back to the bridge above and then throw yourself into a continuous ups and downs that are really fun always or almost on the water, in this regard, be careful to make the rounds when the Adda is in flood, up to the Capriate peninsula. At this point, those who still want and have a trussed leg can go down to Crespi d'Adda, a characteristic village of the 19th century industrial age and then cross the river on a characteristic walkway and then return to Trezzo. I returned from Capriate to Trezzo and then went down again along the river and returned to the starting point.