Best mountain passes near Siero Asturias are accessible from this central Asturian municipality. Siero's landscape is characterized by meadowlands, with its capital Pola de Siero situated at approximately 217 meters above sea level. While the municipality itself features lower elevations, its location provides access to the more mountainous areas of the Cantabrian Mountains. This region offers diverse mountain passes suitable for various outdoor activities.
Last updated: July 1, 2026
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10 km pass with a gentle average gradient and a maximum of less than 10%, with spectacular views.
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The Les Praeres pass, meaning "meadows" in Spanish, is a beautiful crossing point for the surrounding peaks. There's also a bar and restaurant with a mountain atmosphere. As if that weren't enough, there's a deer, rescued as a puppy by the bar's owner, who freely roams the area like a pet.
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The Alto de Santo Emiliano is a classic Asturian cycling pass, located between the municipalities of Mieres and Langreo, connecting the Nalón and Caudal basins in an area with a long mining and cycling tradition. Climb Features • The summit is located at an altitude of approximately 515-519 meters, depending on the slope. • There are two main slopes: • From Langreo (Sama): • Length: 5.2 to 5.4 km • Elevation gain: ~309 m • Average gradient: 5.7% • Maximum gradient: ~7% (no double-digit ramps) • Road in good condition with a fairly constant gradient. • From Mieres (via Rioturbio): • Length: 7.1 to 7.5 km • Elevation: ~291-314 m • Average gradient: 3.9%-4.4% • Initially, a gentle 2-3% section, then a 3.5 km stretch at 5-7% with occasional ramps at 8-9%
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Beautiful place, with impressive views and a bar where you can have a drink or something to eat.
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While Siero itself is at a lower elevation, its central location provides access to several popular mountain passes in the wider Asturian region. Some highly regarded passes include Alto de la Madera, known for its cycling suitability and views of Gijón, and Alto del Padrún, which features a challenging ascent with sections reaching 11% gradient.
Yes, for cyclists seeking a significant challenge, Les Praeres – Sierra de Peñamayor is renowned as the 'wall' of Praeres. It features an average gradient of 12.89% over 3.8 km, reaching an altitude of 740 meters. Another famously difficult climb is L'Angliru, located in Riosa, with sections like 'Cueña les Cabres' boasting a 23.5% gradient.
The mountain passes in the Asturian region accessible from Siero offer diverse and spectacular views. From Alto de la Madera, you can enjoy splendid views of Gijón. Puerto de Ventana provides stunning vistas, especially of the San Emiliano Valley (Babia de Yuso). For expansive panoramic views from the highest point accessible by car, Alto del Gamoniteiro in the Sierra del Aramo is exceptional.
Absolutely. Alto de Santo Emiliano is a classic Asturian cycling pass connecting the Nalón and Caudal basins. It offers well-maintained roads with consistent gradients, making it a favorite for road cyclists. Alto de la Madera and Alto del Padrún are also considered intermediate climbs, providing a good balance of challenge and scenic reward.
The region around Siero offers a variety of outdoor activities. You can explore numerous cycling routes, including those suitable for touring bicycles and mountain bikes. Hiking is also popular, with trails ranging from easy riverside walks to more challenging mountain ascents. For specific routes, you can check out the Cycling around Siero, MTB Trails around Siero, and Hiking around Siero guides.
Yes, Les Praeres – Sierra de Peñamayor is not only a challenging climb but also features a bar and restaurant at the summit, offering a mountain atmosphere where you can enjoy a drink or a meal after your ascent.
The best time to visit the mountain passes around Siero is generally during the spring, summer, and early autumn months (April to October). During these periods, the weather is typically milder and more stable, making conditions ideal for cycling, hiking, and enjoying the panoramic views. Some higher passes might be affected by snow in winter.
Yes, Alto de la Madera is noted as an ideal road for cyclists due to reduced car traffic after the construction of a highway, offering a more serene experience. Similarly, many of the smaller, more challenging climbs tend to have less vehicular traffic.
Alto de Santo Emiliano is located in an area with a long mining and cycling tradition, connecting the Nalón and Caudal basins. This gives it a historical context tied to the industrial heritage of Asturias, alongside its popularity among cyclists.
For scenic drives, Puerto de Ventana, at 1,587 meters, offers stunning views, especially of the San Emiliano Valley. La Cubilla Pass, on the border with Castilla y León, is another beautiful option within the Cantabrian Mountains, known for its picturesque landscapes and is part of the TransCantábrica BTT route.
Visitors frequently highlight the challenging yet rewarding climbs, the breathtaking panoramic views, and the opportunity for diverse outdoor activities like road cycling and mountain biking. The well-maintained roads and the natural beauty of the Asturian landscape are also highly appreciated.


See even more epic mountain passes by checking out these guides around Siero: