4.6
(379)
2,471
hikers
11
hikes
Waterfall hiking trails in Montes Obarenes-San Zadornil traverse a Natural Park situated at the southern foothills of the Cantabrian Mountains, characterized by a distinctive Jurassic-style structural relief. The landscape features numerous canyons and deep gorges carved by rivers like the Ebro, Oca, and Purón, creating dramatic natural settings. This region serves as a biological crossroads, supporting diverse flora including beech, holm oaks, and various pine species, alongside a rich fauna. The Molinar River, with its picturesque waterfalls in Tobera, is a notable feature within this varied terrain.
Last updated: July 7, 2026
4.6
(18)
52
hikers
8.34km
02:21
170m
170m
Hike a moderate 5.2-mile (8.3 km) circular route from Frías to Tobera, exploring historic towns and waterfalls in Montes Obarenes-San Zadorn
4.0
(1)
12
hikers
16.8km
05:06
580m
580m
Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.

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5.0
(1)
17
hikers
8.83km
02:37
250m
250m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.0
(1)
6
hikers
15.5km
04:40
500m
500m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.5
(2)
15
hikers
5.51km
01:34
120m
130m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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Popular around Montes Obarenes-San Zadornil
It is worth visiting the hermitage of Santa María de la Hoz, in the town of Tobera. To do this, we will cross a medieval bridge of Roman origin that spans the Molinar riverbed. The temple, almost embedded in a large rock, dates from the 13th century, features both Romanesque and Gothic elements, and has a portico with arches that offers good views of the surroundings. At its feet stands a second, tiny hermitage from a later date – the 17th century – which houses an altar dedicated to the Cristo de los Remedios.
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If you are in Tobera and Frías, you cannot miss visiting the hermitage of Santa María de la Hoz and the medieval bridge over the Molinar river. The temple is from the 13th century, features both Romanesque and Gothic elements, and has a portico with arches that offers good views of the surroundings. At its feet stands a second, tiny hermitage, from a later date – the 17th century – which houses an altar dedicated to Cristo de los Remedios.
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The city of Frías, declared a Site of Cultural Interest in 2005, a medieval town in Las Merindades Burgalesas. In this town we can see the hanging houses, the Castle of Frías, the church of San Vicente Mártir, the Wall, the medieval bridge, convent of San Francisco, the church of San Vítores, the washhouse and the convent of Vadillo.
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Beautiful medieval town in the province of Burgos.
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It is the upper viewpoint of the waterfalls, but not the best (in my opinion).
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Authentic place of pilgrimage, a beautiful hermitage and surroundings.
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Montes Obarenes-San Zadornil offers a selection of 11 dedicated waterfall hiking trails. These routes vary in difficulty, providing options for different experience levels, from easy strolls to more challenging ascents through the park's diverse terrain.
The waterfalls in Montes Obarenes-San Zadornil, particularly those along the Molinar River in Tobera, are often at their most impressive during the wetter seasons. Late autumn, winter, and early spring typically offer the strongest flows due to increased rainfall and snowmelt, enhancing the natural spectacle.
Yes, there are several easy waterfall hikes. For instance, the Tobera Waterfalls Viewpoint – Medieval Bridge of Tobera loop from Frías is an easy 3.4-mile (5.4 km) trail that takes about 1 hour 34 minutes, leading you through river valleys and past historical sites to the waterfalls.
Absolutely. Many of the waterfall trails in Montes Obarenes-San Zadornil are designed as circular routes, allowing you to start and end at the same point. An example is the Frías – Tobera Waterfalls Viewpoint loop from Frías, which offers extensive views and leads to the Tobera Waterfalls.
Many of the trails are suitable for families, especially those looking for an easy or moderate experience. The natural park's diverse landscapes and the allure of waterfalls can be very engaging for children. We recommend checking the difficulty and length of specific routes, such as the Route of the Senses, which is a moderate 5.2-mile (8.3 km) path, for family suitability.
As a Natural Park, Montes Obarenes-San Zadornil generally welcomes dogs on trails, but it's crucial to keep them on a leash to protect wildlife and ensure the safety and comfort of other hikers. Always practice responsible pet ownership by cleaning up after your dog.
Yes, parking is generally available near the trailheads for popular waterfall hikes, especially in and around villages like Frías and Tobera. These areas are accustomed to visitors, and you'll often find designated parking spots to access the routes.
Accessing the more remote trailheads in Montes Obarenes-San Zadornil by public transport can be challenging due to the rural nature of the Natural Park. While some larger towns like Oña might have bus connections, reaching specific waterfall trailheads often requires a car. It's advisable to check local bus schedules for the nearest towns if you plan to rely on public transport.
The region around the waterfall trails is rich in historical and natural attractions. You can visit the charming village of Frías, known for its castle and unique hanging houses, or explore the ancient salt flats of Poza de la Sal. The dramatic Hermitage of Saint Mary of La Hoz, nestled in a rocky cut, is also a notable sight. For more historical context, the Oña Historic Center is worth a visit.
Yes, you'll find cafes and restaurants in the charming villages located within or near the Natural Park, such as Frías and Oña. These establishments offer opportunities to refuel and relax after your hike, providing local cuisine and refreshments.
The area is highly rated by the komoot community, with an average score of 4.6 stars from over 200 reviews. Reviewers often praise the dramatic relief of the Cantabrian foothills, the deep river gorges, and the diverse forests that characterize the region, alongside the picturesque waterfalls.
While the Tobera Waterfalls are well-known, the extensive network of trails in Montes Obarenes-San Zadornil means there are always opportunities to discover quieter spots. Exploring routes that venture deeper into the canyons carved by rivers like the Ebro, Oca, and Purón can lead to more secluded cascades, especially after periods of heavy rain. The Tobera Waterfalls Viewpoint – View of Frías loop from Ranera is a moderate 9.6-mile (15.4 km) trail that offers a broader exploration of the landscape.


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