The port starts in Descargamaría, on the bridge over the Arrago River, heading towards Robledillo de Gata. The road is in perfect condition up to this beautiful town, but from here on the road surface is quite deteriorated and the width of the road decreases, but, yes, we gain in beauty, since we enter a beautiful area, leaving Robledillo on the left we will be surrounded by chestnut trees, pines, oaks, olive trees, rockroses, etc. A delight for the senses to travel along this little road without hardly finding a car.
As for difficulty, as we said before, it exceeds 100 coefficient, which is a lot, a lot, but the climb is bearable. We will find two very hard kilometers, which are the ones that will basically mark that coefficient, at the exit of Robledillo, a full kilometer above 8% and a couple of kilometers higher, another kilometer above 7%. From there, the difficulty level remains around 4 or 5 percent, but alternating with several downhill or flat sections, which lowers the percentage.