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Road cycling routes
Spain
Santander
Cantabria
Ason

National Park Collados del Asón

The best road cycling routes around National Park Collados del Asón

4.3

(6)

578

riders

14

rides

Road cycling routes around National Park Collados del Asón traverse a dramatic karstic landscape within the Cantabrian Mountains of northern Spain. This region is characterized by extensive limestone outcrops, deep valleys, and significant elevation changes, offering challenging yet scenic rides. Cyclists will encounter diverse natural features, including beech forests, Cantabrian oak groves, and impressive geological formations shaped by ancient glaciers. The area provides well-maintained roads with minimal traffic, ideal for focused road cycling.

Best road cycling routes around National Park Collados del Asón

  • The most popular road cycling route is Portillo Lunada – La Sía Pass loop from Collado del Asón, a 93.6 miles (150.7 km) trail that takes 9 hours 38 minutes to complete. This difficult route features significant climbs through mountain passes, offering expansive views of the Cantabrian interior.
  • Another top favourite among local road cyclists is Picnic Area by the Asón River – Ramales de la Victoria loop from Arredondo, an easy 17.8 miles (28.6 km) path. This route follows the Asón River, providing a gentler ride through scenic valleys.
  • Local road cyclists also love the La Sía Pass – La Gándara Viewpoint loop from Soba, a 13.3 miles (21.4 km) trail leading through mountain passes and offering access to viewpoints, often completed in about 1 hour 26 minutes.
  • Road cycling around National Park Collados del Asón is defined by karstic landscapes, challenging mountain passes, and lush beech forests. The network offers options for various ability levels, from easier valley rides to demanding climbs.
  • The routes in National Park Collados del Asón are highly rated by the komoot community with an average score of 4.3 stars from a few reviews. More than 500 road cyclists have used komoot to explore National Park Collados del Asón's varied terrain.

Last updated: July 12, 2026

72

riders

#1.

Portillo Lunada – La Sía Pass loop from Collado del Asón

151km

09:38

4,190m

4,190m

Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

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Hard

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

Moderate
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Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

Hard

Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

Hard

Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.

Easy
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Tips from the Community

Tobías Fleitas
May 24, 2026, Ampuero Climb

It is a good hike to get to know two small but very beautiful villages with very friendly people

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A demanding but VERY beautiful route. The Estacas de Trueba pass is absolutely spectacular!

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nabartu
September 8, 2024, Portillo de La Sía

very windy, wrap up well

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Douglas Beer Craft beers Made in Cantabria since 2006 Think Global, Drink Local From Liérganes with love

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It is 1.5 km from the top of the port.

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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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There is usually confusion between El Esquilo and Fuente las Varas, well, El Esquilo is a pass that we find at this point and that takes its name from the neighborhood belonging to the municipality of Voto that we have just passed through if we have started the ascent in the Arás Valley. After crowning it, we only have to finish the ascent to the crossroads called Puerto de Fuente las Varas through much softer terrain, where we can enjoy the views offered by the Matienzo poljé and the peaks of Asón that can already be glimpsed. Peña Rocias, Colina and Porracolina.

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Frequently Asked Questions

How many road cycling routes are available in National Park Collados del Asón?

There are 14 road cycling routes around National Park Collados del Asón, offering a range of experiences from easy valley rides to demanding mountain climbs.

What kind of terrain can I expect on road cycling routes in National Park Collados del Asón?

The region features a dramatic karstic landscape with extensive limestone outcrops, deep valleys, and significant elevation changes. You'll encounter winding ascents, long climbs, and technical descents, often traversing beautiful mountain landscapes, lonely valleys, and lush beech and oak forests.

Are there any easy road cycling routes for beginners or families?

Yes, while many routes are challenging, there are options for easier rides. For instance, the Picnic Area by the Asón River – Ramales de la Victoria loop from Arredondo is an easy 17.8-mile path that follows the Asón River through scenic valleys, providing a gentler experience.

What are the most challenging road cycling routes in the area?

The region is known for its demanding climbs. One of the most challenging routes is the Portillo Lunada – La Sía Pass loop from Collado del Asón, a 93.6-mile trail with significant climbs through mountain passes, offering expansive views of the Cantabrian interior.

What natural attractions or viewpoints can I see along the road cycling routes?

Cyclists can enjoy spectacular natural features. The Asón Waterfall, a magnificent 70-meter waterfall, is a key highlight. Routes also pass through areas like Canal Honda, a striking glacial canyon, and offer panoramic views from elevated areas such as Alto de la Posadía and Brenarromán plateau.

What is the best time of year for road cycling in National Park Collados del Asón?

The mild summers in the Cantabrian Mountains make it an ideal location for long rides, allowing cyclists to avoid the oppressive heat found in some other destinations. Spring and autumn also offer pleasant conditions with vibrant foliage.

Are there circular road cycling routes available?

Yes, many routes are designed as loops, allowing you to start and end at the same point. Examples include the La Sía Pass – La Gándara Viewpoint loop from Soba and the Puerto de Alisas – Carlos III Gate loop from Arredondo.

What do other road cyclists say about the routes in National Park Collados del Asón?

The routes in National Park Collados del Asón are highly rated by the komoot community, with an average score of 4.3 stars from numerous reviews. Cyclists often praise the well-maintained roads, minimal traffic, and the constantly changing backdrop of natural beauty, from rugged limestone to lush forests.

Are there places to stop for refreshments or accommodation near the cycling routes?

While the park itself is traditionally unpopulated, the surrounding towns and villages in the Cantabrian region offer various cafes, pubs, and accommodation options. Planning your route to pass through these settlements can provide convenient stops for refreshments.

What are the road conditions like for cycling in this region?

Roads in the Cantabrian region, including those around Collados del Asón, are generally well-paved and often have minimal traffic. This provides a smooth and safe cycling experience, allowing you to focus on the ride and the stunning scenery.

Can I find routes that feature mountain passes in National Park Collados del Asón?

Absolutely. The region is renowned for its mountain passes, some of which have been featured in the Vuelta a España. Routes like the Summit of Fuente Las Varas – Ampuero Climb loop from Arredondo offer significant uphill efforts and rewarding views from these elevated points.

Most popular routes around National Park Collados del Asón

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