4.8
(15)
1,631
riders
3
rides
No traffic road cycling routes around National Park los Collados del Asón traverse a landscape shaped by ancient glaciers and karstic processes, featuring dramatic limestone formations and deep valleys. The region's topography includes significant elevation changes, with altitudes ranging from 240 to 1,581 meters. Cyclists encounter a mix of Atlantic forests, high-altitude meadows, and the prominent Asón River, which emerges from a cliff as a waterfall. This varied terrain provides a challenging environment for road cycling.
Last updated: July 12, 2026
8
riders
21.4km
01:26
670m
680m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
13
riders
35.6km
02:31
1,200m
1,200m
Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.

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5.0
(1)
37
riders
17.6km
01:32
750m
740m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
5.0
(1)
40
riders
17.3km
01:33
740m
740m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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Popular around National Park los Collados del Asón
The Torre de los Baranda, in Espinosa de los Monteros, is a stately building that reflects the historical importance of the area's lineages.
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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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This is one of the best-known climbs in the province of Burgos, not only because it's always the star stage of the Vuelta a Burgos but also because it has appeared in key stages of the Vuelta a España, one of the three most important stage races in the world. A brutal eight-and-a-half-kilometer climb at an average gradient of over 9%.
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El Picón Blanco is a well-known mountain pass, very popular among road cyclists, although it is gaining popularity among donkey lovers, since it can be reached by a forest track in good condition for those who prefer to avoid asphalt. From here it is usually connected to the port of La Sía, the most popular among the ports of Pas.
2
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Although it is a bit gloomy, it could be a good safeguard
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There are currently 3 dedicated no-traffic road cycling routes listed in this guide for National Park Los Collados del Asón. These routes offer a unique opportunity to experience the park's stunning landscapes without vehicle interference.
The routes featured in this guide are rated as moderate to difficult, reflecting the mountainous terrain and significant elevation changes characteristic of the region. There are no easy options listed here, so a good level of fitness is recommended.
For experienced cyclists seeking a challenge, the La Sía Pass – Picón Blanco loop from Soba is rated as difficult. This route covers 35.6 km with over 1200 meters of elevation gain, offering a demanding yet rewarding experience through the park's dramatic landscapes.
The no-traffic road cycling routes in National Park Los Collados del Asón traverse a diverse landscape shaped by glacial and karstic processes. You'll encounter spectacular cirques, U-shaped valleys, and impressive limestone formations. The routes often provide breathtaking views of lush meadows, forests, and the iconic Asón Waterfall, which emerges from a rocky cliff.
Yes, the mountainous terrain offers numerous scenic vistas. For example, the La Sía Pass – La Gándara Viewpoint loop from Soba specifically highlights the Alto de la Posadía, which provides expansive views of the surrounding natural beauty.
The best time for road cycling in National Park Los Collados del Asón is generally from spring to autumn. During these seasons, the weather is more favorable, and the mountain passes are typically clear of snow, allowing for full access to the routes and the most enjoyable conditions.
Yes, all the no-traffic road cycling routes listed in this guide are circular. This includes routes like the La Sía Pass – La Gándara Viewpoint loop from Soba and the Picón Blanco loop from Las Cascajeras, allowing you to start and finish at the same point.
While specific parking details for each starting point are best checked on the individual route pages, the routes often begin in or near villages like Soba or Las Cascajeras, where public parking options are typically available. It's advisable to check local regulations upon arrival.
The komoot community highly rates the road cycling experience in National Park Los Collados del Asón, with an average score of 4.75 stars. Reviewers frequently praise the tranquility of the routes, the stunning natural beauty, and the challenging yet rewarding climbs through the park's unique glaciated and karstic landscapes.
Beyond the natural beauty, you can look out for significant geological features like the La Sía Pass, which is a prominent mountain pass, and the dramatic Canal Honda gorge. The source of the Asón River, with its spectacular 50-meter waterfall, is also a must-see natural monument.
While the routes themselves are designed to be traffic-free, they often pass through or start near small villages. It's recommended to check the specific route details on komoot for points of interest, including potential cafes or rest stops, before you set out. Planning your breaks in advance is always a good idea in more remote areas.


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