Best mountain passes around Ibias are found within a mountainous region of Asturias, Spain. This area is part of the Fuentes del Narcea, Degaña e Ibias Natural Park, a UNESCO Biosphere Reserve. The terrain features challenging mountain routes and trails that traverse significant elevations. These routes offer experiences similar to traditional passes, with impressive gorges, high peaks, and dense forests.
Last updated: July 1, 2026
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Among the theories surrounding the unusual name of this mountain pass, one is the popular legend that some shepherdesses were caught in a blizzard and died in a nearby shelter. In any case, the pass is located in a stunning setting.
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This is a beautiful 12-kilometer climb with 1,112 meters of elevation gain at an average gradient of 9.3%, with some slopes exceeding 20%. The surface is good, and the views are wonderful.
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This climb is a must if you're touring the area. It's seven and a half kilometers long, with the gradient concentrating on the final section. You ascend nearly 700 meters and face 19% gradients in a unique setting.
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This is a spectacular place. If you like the mountains, the tranquility and solitude of the mountains with hardly any cars or noise, you have to come here by bike. The Campa de Centenales is located at the end of the Puerto del Connio on the side of the Ibias municipality. The views of the Asturian mountain, its steps, its forests surrounding the Muniellos reserve... are wonderful.
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Mythical port in the province of Asturias for cyclists. From Cecos, this port awaits us with an altitude of 1,315 meters above sea level, a gradient of 1,024 m and a length of 19.39km with an average % of 5.28 and a maximum slope of 10%.
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The Pozo de las Mujeres Muertas port has 3 slopes, all 3 hard and with ramps above 10%. 1. The eastern slope, which begins in Monasterio del Hermo, has 2 well-differentiated areas, with a second part of 4 km at 10% on average. The road is wide and has smooth asphalt in very good condition. With hardly any trees or traffic. 2. The west slope, which begins in San Antolín de Ibias, is longer and harder than the previous one, with 2 rest sections (including a small downhill section). The ramps are constant and have long straights. It is usually windy as it is a climb without any trees. The road is like the eastern slope. 3. The northern slope, which comes from the Valledor (gold valley), has nothing to do with the previous 2. Narrow and bumpy road, it has the appearance of old ports. It is hard and with constant ramps. With hardly any trees, although the wind blows less. For me, the best aspect. Absence of sources in the 3 slopes. You have to recharge at the starting locations. I once ran out of water on a hot day... and I had a hard time
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The port of Connio is located within the “Port Route” of southwestern Asturias, which also includes the port of Pozo de las Mujeres Muertas. The climb crosses the Muniellos Biosphere Reserve, an authentic natural paradise. I recommend making a stop at a viewpoint in the rest area in the middle of the port (Mirador de Muniellos). I also recommend visiting the interpretation center, which is accessed by turning off the main road and going up a difficult section. For more details on the climb from Ventanueva, I recommend visiting the profile and description of Carlos Vega. https://www.carlosvega.net/ascensiones/159/el-connio-por-ventanueva-cangas-del-narcea
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Crossing point of the Route of the Ports from Cangas del Narcea. The route up to here offers us excellent views of the beautiful surroundings of western Asturias.
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The mountain passes and routes in Ibias are characterized by their mountainous terrain, challenging ascents, and significant elevation gains. They are part of the Fuentes del Narcea, Degaña e Ibias Natural Park, a UNESCO Biosphere Reserve, offering impressive gorges, high peaks, and dense forests. Many routes provide experiences similar to traditional passes, with panoramic vistas.
From the mountain passes in Ibias, you can expect breathtaking views of the Asturian mountains, its steps, and forests, especially those surrounding the Muniellos reserve. The region features impressive gorges like the Desfiladero de Bustelín, high peaks such as Pico Miravalles, and glacial lakes found along trails like the Lakes Sisterna Trail. These areas are rich in natural beauty, offering stunning landscapes.
Yes, Ibias is renowned for its challenging mountain routes. For cyclists, the Connio Pass is a mythical spot, reaching 1,315 meters above sea level with a 1,024-meter drop over 19.39 km and a maximum slope of 10%. The Pozo de las Mujeres Muertas Pass also features three hard slopes with ramps above 10%. Hikers can tackle routes like the Desfiladero de Bustelín (PR-AS 27), a 16.5 km circular route with a 770m elevation gain, or the Lakes Sisterna Trail, which has a considerable elevation gain of around 1,000 meters.
Beyond exploring the mountain passes themselves, Ibias offers a variety of outdoor activities. You can find numerous hiking trails, including the challenging Muniellos Lagoons Loop or the moderate Gold Trail. For cyclists, there are dedicated MTB trails like the Puerta de Ancares Loop, and road cycling routes. The region also has running trails, such as the Pico O Mostallar loop.
The best time to visit the mountain passes in Ibias for hiking and cycling is generally during the warmer months, from late spring to early autumn (May to October). During this period, the weather is more favorable, and trails are typically free of snow, offering better conditions for outdoor activities. Hikers should carry sufficient water, especially on longer trails, as natural water sources can be scarce.
While many routes in Ibias are challenging, there are options for families. The region offers various walking routes, and some sections or shorter trails might be suitable for families. For specific family-friendly recommendations, it's advisable to check local tourism information or trail descriptions for routes with lower difficulty ratings and shorter distances, such as parts of the 'Gold Trail' which is rated moderate.
The Pozo de las Mujeres Muertas Pass is a significant crossing point of the Route of the Ports from Cangas del Narcea. It features three hard slopes, all with ramps above 10%. The route up to the pass offers excellent views of the beautiful surroundings of western Asturias. Cyclists should note the absence of water sources on the slopes, so recharging at starting locations is essential.
The Connio Pass is considered mythical by road bike enthusiasts in Asturias. Starting from Cecos, it ascends to an altitude of 1,315 meters above sea level, with a gradient of 1,024 meters over 19.39 km. The climb crosses the Muniellos Biosphere Reserve, an authentic natural paradise, and offers a viewpoint (Mirador de Muniellos) for a scenic stop.
Campa de Cernatala offers tranquility and solitude amidst the mountains. Located at the end of the Puerto del Connio on the Ibias municipality side, it provides wonderful views of the Asturian mountains, its steps, and the forests surrounding the Muniellos reserve. It's an ideal spot for those seeking a peaceful mountain experience with minimal traffic and noise.
Given that Ibias is part of the Fuentes del Narcea, Degaña e Ibias Natural Park and a UNESCO Biosphere Reserve, it is a rich area for biodiversity. While specific wildlife spotting locations aren't detailed, the dense forests and natural habitats around the mountain passes and routes, especially within the Muniellos Biosphere Reserve, suggest good opportunities for observing local wildlife.
Beyond the mountain passes, Ibias offers several notable hiking trails. The Desfiladero de Bustelín (PR-AS 27) is a circular route known for spectacular gorge views and passing through an abandoned village. The Lakes Sisterna Trail (PR-AS 8) is highly recommended for its steepness, leading to beautiful lakes, waterfalls, and panoramic views from Teso Mular. Other routes include the 'Route of the Gold' and 'The Route to the Seroiro Dolmen'.


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