Stage 20 will now be held over a 210km route from Silandro to Tre Cime di Lavaredo. The Passo Costalunga, Passo di San Pellegrino, Passo Giau have all been erased from the new itinerary. However, the climb of the Passo Tre Croci remains, along with the final climb to the finish.

Originally, the parcours was 203km and included four high passes before the summit finish at Tre Cime di Lavaredo. With temperatures hovering around freezing point and the peaks covered in snow a new route became inevitable.