This is a very challenging mountain stage. The route takes in 4 categorised climbs in a row, with just a few stretches to let the bunch catch their breath. The first 45 km run on apparently flat ground, and are followed by three typical pre-Alpine climbs, marked by narrow roadway, high gradients and endless turns, both while climbing and while descending. After a flat drag including a passage over the finish line, the route heads towards the two final climbs in Porzùs and Valle, with a very winding and undulating profile, and high uphill gradients. The road narrows at point while crossing urban areas. The route features some technical descents, especially when climbing down form Passo San Martino at km 67.The last 5 km are deceptively flat and actually run downhill all the way to Cividale del Friuli. The route features a few twists and turns over the last 1,000 m; the home straight is on 7-m wide asphalt road.