The southern slope of the Coll de la Gallina is the one that begins in the parish of Sant Julià de Lòria and passes through the town of Fontaneda. It is 12.1 km with an average slope of 8.4% and a gradient of 1,048 meters. There is a small descent between kilometers 3 and 4 of the climb. The last 4 km, once you have passed Mas d'Alins, are the hardest, with 1 entire kilometer at 12%. The road becomes very narrow in this section as it is an old paved mountain road. It is spectacular.