Alto del Gamoniteiro is an isolated and remote high mountain peak at an elevation of 1.776m (5,826ft) above the sea level, located in the Autonomous Community of the Principality of Asturias, in northern Spain.
The road to reach the summit is extremely narrow, with a bad asphalt (and concrete sections), a few pot holes and very steep. It is one of the most beautiful climbs in the area. The ramps really hit hard, getting up to 15% at the end of three, ascending in difficulty, 3km from home, a flattening out for no more than 100m is then followed by a spike up to 13%. The last 1.5 km is also the toughest, averaging no less than 12%, and with a maximum of just 17% that tells you that it's incessant suffering. It's actually kind of strange that the maximum of such a brutal climb is just 17%.
The hardest part of the climb is the final kilometer which averages 13.3%. The drive offers stunning views. If you're afraid of heights, it's probably best to keep your eyes forward. It is said to be the Spanish version of Mont Ventoux without the crowds.
The climb is very steep, hitting a grueling 17% through some of the ramps. Starting from AS-230 road, the ascent is 6.4 km (3.97 miles) long. Over this distance, the elevation gain is 625 meters. The average percentage is 9.76 %.