Gran Fondo Portillo
The road to Portillo, (which is also the International Highway between Santiago and Mendoza, Argentina) is worldwide known because of a short section called “Los Caracoles” (the snails). Los Caracoles is a series of hard switchbacks on an extremely steep incline which includes 29 hairpin turns and it is considered, according to a Red bull article, one of the world’s hardest cycling climbs with gradients up to 14%.