With nearly 2,500 m altitude gain, and 4 unpaved road sectors totalling 35 km over the final 70 km of the route, this will be a very challenging stage. The first 90 km are raced on wide and sometimes rough roads. The first unpaved sector, which also includes a technical downhill stretch, begins in Torrenieri. The second dirt road sector, which also includes a level crossing, begins after Buonconvento and Bibbiano. The route passes over river Ombrone, and then the road starts to rise for approx. 6 km, with gradients nearing 16% midway. The route weaves through a brace of bends across the forest, on dirt roads, and then comes back on tarmac to negotiate a categorised climb up to Passo del Lume Spento. After descending into Montalcino, the route heads towards Castelnuovo dell’Abate and takes in the two final dirt road sectors, one after the other. Past Tavernelle, the road rises markedly, merges back onto the route (before the categorised climb) and then heads all the way to the finish.
Descending into Montalcino, a little after the red triangle, the race enters the urban area on narrow, stone-paved roads. Taking into the final left-hand bend, the route merges onto the home straight (200 m), on tarmac road.