4.3
(7)
253
riders
12
rides
Touring cycling routes in Collados del Asón traverse a landscape shaped by karstic processes and glacial activity, featuring dramatic limestone outcrops, sinkholes, and U-shaped valleys. The park is home to the spectacular source of the Asón River, where water emerges from a cliff face to form a 50 to 70-meter high waterfall. Cyclists will find diverse Cantabrian oak groves and beech forests, alongside open meadows. The region's unpopulated character ensures a tranquil cycling experience.
Last updated: May 17, 2026
5.0
(3)
70
riders
62.2km
04:35
1,420m
1,420m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
59
riders
58.9km
04:16
1,250m
1,250m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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33
riders
41.6km
03:16
1,170m
1,170m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
2.0
(2)
29
riders
60.1km
04:38
1,570m
1,570m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
22
riders
32.3km
02:36
980m
980m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Meters before reaching the Port or Portillo de la Sía, at 1,200 m. altitude, we find the Mirador, from where we have impressive views of the Soba Valley.
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The Carlos III Gate is located in the town of Riotuerto. If you're in the area, stop by this baroque memorial arch.
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Take advantage now, there is no more...
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From here the main routes of the Collados del Asón Natural Park begin. This car park is usually full on weekends and you can also park on the other side of the road
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Within this territory we find spectacular nature. We have assets of important cultural interest such as the Palacio de los Acebedo, a Herrerian Renaissance style building belonging to the 17th century, and the Palacio de los Fernández de Velasco, also from the 17th century, with elements from the 18th century, which belongs to the regional classicist. Another spectacular place is the Fuente del Francés and the Molino maquilero or aceña mill, typical of this area.
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Nice park next to the Asón river. It is the perfect place to relax and cool off in the summer after a long ride on the bike.
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A small mountain pass in the easternmost sector of the Cordillera. At 1,316 meters above sea level, it is the third highest mountain pass in Cantabria. The port is closed very frequently in winter, especially in its Cantabrian part, being closed permanently for several months on many occasions.
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Touring cycling routes in Collados del Asón are generally considered challenging. All 13 routes listed in this guide are rated as difficult, featuring significant elevation gains and descents. For example, the Basiegos de Dios Café Stop – La Sía Pass loop from Soba involves over 1400 meters of ascent. The terrain is shaped by karstic formations and glacial activity, offering varied and demanding rides.
Yes, Collados del Asón is rich in spectacular natural landmarks. A major highlight is the Asón Waterfall, where the Asón River dramatically emerges from a cliff face. You can also encounter impressive karst features like the Canal Honda gorge and enjoy panoramic vistas from viewpoints such as Alto de la Posadía. These features are often visible from or accessible near the cycling routes.
Many of the touring cycling routes in Collados del Asón are designed as loops, allowing you to start and finish in the same location. Examples include the challenging Puerto de Alisas – Summit of Fuente Las Varas loop from Arredondo and the scenic La Sía Pass – Collado de Asón loop from Arredondo. These circular routes are ideal for exploring the diverse landscapes without retracing your path.
The terrain in Collados del Asón is characterized by its unique karst topography and glacial formations. You can expect a mix of well-maintained asphalt roads, particularly on descents like the one from Collado de Asón to Arredondo, which is described as 'like a carpet'. Routes will take you through Cantabrian oak groves, small beech forests, and open meadows, often with significant climbs and descents through mountainous areas.
The komoot community highly rates touring cycling in Collados del Asón, with an average score of 4.0 stars from over 6 reviews. Cyclists often praise the region's pristine and undisturbed natural state, the breathtaking panoramic views from high passes like La Sía Pass, and the tranquil experience away from heavy traffic. The dramatic landscapes, including the Asón Waterfall, are frequently highlighted as memorable features.
Given that all listed touring cycling routes in Collados del Asón are rated as difficult with significant elevation changes, they may not be suitable for young children or families seeking very easy, flat rides. The region is more geared towards experienced cyclists comfortable with challenging climbs and descents. For families, it's advisable to check specific route profiles carefully for shorter, less strenuous sections if available, or consider other activities in the park.
While Collados del Asón is a natural park, specific regulations regarding cycling with dogs on touring routes can vary. Generally, if your dog is well-behaved and accustomed to cycling alongside you, it might be possible on public roads. However, always ensure your dog is under control, especially in areas with livestock or wildlife. It's recommended to check local park guidelines or signage for any specific restrictions on trails or protected areas before you go.
The best time for touring cycling in Collados del Asón is typically during the spring, summer, and early autumn months. These seasons offer more favorable weather conditions, with less rain and milder temperatures, making the challenging climbs more enjoyable. Spring brings lush greenery, while autumn showcases beautiful foliage. Winter can be cold and wet, with higher elevations potentially experiencing snow, making cycling more difficult or impossible.
The Collados del Asón Natural Park is known for its unpopulated character, offering a sense of wilderness. While specific bike-friendly cafes or pubs directly on every route might be limited, you can find amenities in nearby villages such as Arredondo or Soba. The Collados del Asón Natural Park Interpretation Center in La Gándara de Soba is a good resource for information. For accommodation, options are available in the surrounding valleys and towns, catering to visitors exploring the park.
Parking is generally available in the villages and towns that serve as common starting points for routes, such as Arredondo, Soba, or La Pedrosa. Look for designated parking areas within these communities. Given the tranquil nature of the park, parking is usually less of an issue than in more densely populated areas, but it's always wise to arrive early during peak seasons.
The duration of touring cycling routes in Collados del Asón varies depending on the specific route length, elevation gain, and your cycling pace. For instance, the Basiegos de Dios Café Stop – La Sía Pass loop from Soba, at 62.2 km, typically takes around 4 hours and 34 minutes. Shorter routes like the Portillo Lunada – Portillo de Ludaña loop from La Pedrosa (32.3 km) can be completed in about 2 hours and 35 minutes. Always factor in time for breaks and enjoying the views.
Collados del Asón is a Natural Park, and while general touring cycling on public roads is usually permitted, specific regulations might apply to certain trails or protected areas within the park. It's always a good practice to check with the Collados del Asón Natural Park Interpretation Center in La Gándara de Soba for the most current information regarding cycling regulations or any permits that might be required for specific routes or activities.


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