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Spain
Santander
Cantabria
Costera
Bareyo

Santoña Marshes and Ampuero Climb Loop

Hard

4.0

(1)

29

riders

Santoña Marshes and Ampuero Climb Loop

04:26

86.5km

1,340m

Road cycling

This difficult 53.8-mile circular road cycling route through Cantabria connects Ajo, San Miguel de Meruela, Ampuero, and the Marismas de San

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

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1

5.37 km

Tree-Lined Road in San Miguel de Meruelo

Highlight (Segment) • Cycleway

Beautiful and very quiet section between trees, with very cool views of the region, although the road is very bumpy.

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2

23.3 km

Campo La Cruz

Highlight • Mountain Pass

The port has an altitude of 350 meters, a distance of 3.65 km and an average slope of 7%. The asphalt is in very good condition. The road runs next …

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3

50.1 km

Ampuero Climb

Highlight • Climb

An easy site, but demanding in some points, for the road bike. With impressive views.

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4

61.6 km

Santoña Marshes

Highlight • Natural

This natural park is the most important wetland on the Cantabrian coast. Its 6,679 hectares are full of unique marine fauna and are home to more than 121 species of …

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5

65.2 km

Marshes Viewpoint

Highlight • Viewpoint

A small observatory where you can see the marshes and the multitude of birds in their habitat. There are a couple of benches to enjoy it more quietly.

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B

86.5 km

End point

Parking

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Way Types & Surfaces

Way Types

66.0 km

15.3 km

3.35 km

1.82 km

< 100 m

Surfaces

76.2 km

9.79 km

403 m

164 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (430 m)

Lowest point (undefined)

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Weather

Powered by Foreca

Wednesday 8 July

27°C

19°C

0 %

Additional weather tips

Max wind speed: 17.0 km/h

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Frequently Asked Questions

How long should I expect this racebike route to take?

This challenging racebike route, covering over 86 kilometers with significant elevation gain, typically takes around 4 hours and 25 minutes of active cycling time. However, plan for a longer overall duration to account for stops, breaks, and enjoying the scenic views.

What kind of terrain will I encounter on this route?

The route offers a highly varied terrain. You'll experience coastal roads around Ajo and the Santoña Marshes, which can be easy and scenic but may include the challenging 'Alto de Ajo' climb. Inland sections towards San Miguel de Meruelo and Ampuero feature undulating hills and valleys, with Ampuero offering significant climbs like the Ampuero Climb. While generally well-maintained, some segments might have variable conditions.

Is this route suitable for beginner road cyclists?

Given its 'difficult' classification, significant distance (over 86 km), and substantial elevation gain (over 1300m), this specific circular route is not recommended for beginner road cyclists. It combines challenging climbs with long distances, making it more suitable for experienced riders looking for a demanding ride.

What are the main highlights and scenic points along the way?

You'll enjoy diverse scenery, from stunning coastal views around Ajo and the unique marshlands of the Santoña Marshes, rich in birdlife. Key highlights include the picturesque Tree-Lined Road in San Miguel de Meruelo, the strategic Campo La Cruz, and the challenging Ampuero Climb. Don't miss the panoramic Marshes Viewpoint for breathtaking vistas.

When is the best time of year to cycle this route?

The best time to cycle this route is generally during spring or autumn. These seasons offer pleasant temperatures and less traffic than the peak summer months. Spring also brings lush green landscapes and opportunities for birdwatching in the marshes. While summer is an option, be prepared for potentially higher temperatures and increased coastal traffic. Winter can be cold, and some higher sections might even see snow.

Where can I park to start this circular route?

While there isn't one designated 'official' starting point with specific parking information provided, Ajo is the initial named location on the route. You can typically find public parking in the towns and villages along the route, such as Ajo or Ampuero. It's advisable to check local parking regulations upon arrival, especially during peak seasons.

Are there any permits or entrance fees required for this route, especially in the Natural Park?

No, there are generally no permits or entrance fees required to cycle this route or to access the public areas of the Parque Natural de las Marismas de Santoña, Victoria y Joyel. However, always respect local regulations, especially concerning protected natural areas, and ensure you stay on designated roads and paths.

Is this road cycling route dog-friendly?

While dogs are generally welcome in many outdoor areas, this is a road cycling route, and specific dog-friendly amenities or rules are not typically applicable. If you plan to bring a dog, ensure they are safely secured (e.g., in a trailer) and that you adhere to any local leash laws or regulations, especially when passing through towns or protected natural areas like the Marismas de Santoña.

Does this route connect with other trails?

Yes, sections of this route intersect with or run alongside several other paths. You may find yourself on parts of the Senda del Litoral, the Northern Route (Cantabria), or the Sendero peatonal de La Aparecida. Other smaller paths like the Camino al castillo de Montehano and Sendero de acceso al Molino de Santa Olaja also briefly connect.

Can I find places for refreshments or accommodation along the route?

Yes, as the route passes through several towns and villages like Ajo, San Miguel de Meruelo, and Ampuero, you will find opportunities for refreshments. These areas typically offer cafes, bars, and restaurants. For accommodation, you would need to plan ahead and book in one of these towns if you intend to break the journey into multiple days.

What wildlife can I expect to see, especially in the Marismas de Santoña?

The Santoña Marshes (Marismas de Santoña, Victoria y Joyel Natural Park) are a significant ecological area, particularly renowned for their birdlife. During migratory seasons, you can expect to see a wide variety of waterfowl and wading birds. Inland, you might spot common Cantabrian wildlife, but the marshes are the primary spot for wildlife observation.

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