4.1
(8)
151
riders
28
rides
Mountain biking around Roncal/Erronkari offers diverse terrain within the Navarrese Pyrenees, characterized by high mountains, extensive forests, and verdant pastures. The region features the Larra-Belagua Massif, known for its expansive karstic limestone formations and unique black pine forests. The Belagua Valley is notable as the only glacial valley in Navarra, and the Esca river carves its way through the valley. This landscape provides varied conditions for mountain biking, from challenging high mountain scenery to dense woods.
Last updated: May 4, 2026
3.0
(1)
7
riders
36.7km
04:11
1,230m
1,230m
Tackle the difficult 22.8-mile Vuelta al Peñablanca mountain biking route in Roncal Valley, featuring 4044 feet of elevation gain.
5.0
(2)
20
riders
52.9km
04:03
1,150m
1,140m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.

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9
riders
14.5km
01:59
630m
630m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
4.0
(1)
7
riders
46.0km
04:04
980m
980m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
6
riders
31.6km
03:25
880m
890m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
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Larra Belagua is a good area for practicing Enduro.
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Hidden among the undergrowth, you climb up a small path next to the bridge, the interior is flooded.
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Without a doubt, the Col de la Piedra de Saint Martin or Pierre Saint-Martin is one of the Top 10 in the whole of the Pyrenees. Without exceeding 2000 metres of altitude, it is a very long pass, with a lot of accumulated gradient (due to the innumerable French slopes, the gradient is 1,450 metres), with very hard slopes and several kilometres above 10%, with wonderful landscapes and panoramic views and with little traffic, except for the slopes crossed by the main road (D132 in France, the NA 137 in Spain). It is a pass with many slopes; in Europe there are few other passes that have as many slopes as this one (col de Turini, Passo delle Erbe, would be comparable in number of slopes approximately). I have only climbed it by 2 slopes: (i) my first time was from Lourdios Ichère, crossing the col de Labays and the col de Soudet. Simply spectacular; (ii) I have subsequently climbed the Spanish side on several occasions, which is unique, and which starts from Belagua and crosses the Belagua cross-country ski resort to reach the mountain pass. It is also very beautiful, with a landscape and views different from the north-east side. If I had to choose one of the two, I liked the north-west side better because it is more remote, harder and in my opinion more authentic. It is also a culturally special mountain pass because the Tribute of the 3 cows takes place on its summit every 13th of July, which is considered the oldest treaty in force in Europe. So... you know... you cannot miss the opportunity to come here and enjoy this wonderful jewel of the Pyrenees!!!!
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The Puerto de Laza is a small and beautiful hill that joins the valleys of Roncal (starting from Isaba) and Salazar (starting from Ochagavía) in the Navarrese Pyrenees. Both sides are very similar: a very easy start on a winding road, in perfect condition but without a hard shoulder, passing through small towns and going up the course of the respective rivers Anduña (Salazar valley) and Urbi (Roncal valley); a final stretch of 2 - 3 kms that is harder without being too much so, although there are some slopes above 10%. The Salazar valley side becomes harder when leaving behind the detour to the Larrau port. From here to the port there are 3 km with an average gradient of 7%. On the other hand, the Roncal valley side becomes harder when overcoming a bridge over the river that has been with us since we left Isaba behind. From here it is barely 2 km with an average gradient of 7%. From a landscape perspective, it is a port that I love because you can enjoy the exuberance of the vegetation of the Pyrenees, crossing narrow valleys and only with panoramic views when you reach the top, where there is a viewing point that is worth looking out at. A port that I always recommend for enjoying cycle tourism. I leave you the profile of both sides produced by the website www.cyclingcols.com --> http://www.cyclingcols.com/col/Laza
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I don't remember having seen the title of "one of the most beautiful towns in Navarra" or similar, but the truth is that, if it doesn't have it, it deserves it.
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This mountain pass is on the Franco-Spanish border. It is overlooked by the peak of Arlas which rises to 2,044 meters. From the pass, you can admire the valleys of Roncal in Spain and Haute-Soule in France.
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The Col de Laza is located in Spain not far from the French border and the port of Larrau. Shorter than its neighbour, its ascent takes place in the middle of a beautiful forest which opens onto lovely views of the surrounding mountains.
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The Navarrese municipality of Isaba is located in the Roncal valley. The town is located at the confluence of several rivers and offers impressive views of the surrounding high Pyrenean peaks.
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There are over 30 mountain bike trails around Roncal/Erronkari listed on komoot, offering diverse terrain. The wider Navarrese Pyrenees region, including the Larra-Belagua Bike area, features an extensive network of trails for all skill levels.
Mountain bike trails in Roncal/Erronkari range from moderate to difficult. Komoot lists 15 moderate routes and 17 difficult ones. The region caters to a wide range of skill levels, from moderate rides suitable for any fitness level (S0-S1 on the Single Track Scale) to hard mountain bike rides requiring very good fitness and advanced skills (S3-S6).
While many trails in Roncal/Erronkari feature significant elevation gains and challenging terrain, some of the moderate routes might be suitable for families with older children or those with good fitness. For example, the Isaba – Cueva del Ibón loop from Isaba / Izaba is a moderate 18.8-mile path that navigates through diverse terrain, including sections of oak and beech woods. Always check the route details and elevation profiles to ensure it matches your family's capabilities.
Many trails in the Roncal/Erronkari region are suitable for dogs, especially those that traverse forests and pastures. However, it's always recommended to check specific trail regulations and ensure your dog is well-behaved and on a leash, particularly in areas with livestock or protected wildlife. Be mindful of the terrain and weather conditions, as some routes can be demanding.
You can expect breathtaking high mountain scenery, unique geological formations, and dense forests. The region is part of the Navarrese Pyrenees, featuring glacial valleys like Belagua, the impressive Karst of Larra with its limestone formations and black pine forests, and idyllic oak and beech woods. The Esca river also flows through the valley, adding to the natural beauty.
Yes, the region offers several interesting landmarks. You might encounter mountain passes such as Laza Pass (1,129 m) or Collado de Argibiela. The charming Isaba Village is a picturesque stop, and you could even visit the Belabarzeko Urjausia - natural swimming pool. The Bunker of the P Line – View from the Mountain Ridge loop from Isaba / Izaba offers views of the Karst of Larra.
The best time for mountain biking in Roncal/Erronkari is typically from late spring to early autumn (May to October). During these months, the weather is generally more stable, and trails are clear of snow. Summer offers warmer temperatures, while spring and autumn provide pleasant riding conditions with vibrant foliage. Always check local weather forecasts before heading out, especially for high-altitude routes.
Yes, many of the mountain bike trails in Roncal/Erronkari are circular, allowing you to start and end in the same location. Examples include the challenging Vuelta al Peñablanca – circular desde Vidángoz por Roncal and the Isaba – Isaba Village loop from Isaba / Izaba.
Parking is generally available in and around the charming villages of the Roncal Valley, such as Isaba, Vidángoz, and Roncal, which often serve as starting points for many trails. Look for designated parking areas within these villages. Specific trailheads may also have limited parking, so it's advisable to plan your starting point in advance.
Public transport options to the more remote mountain biking areas in Roncal/Erronkari can be limited. While there are bus services connecting some of the main villages within the valley, these may not always accommodate bicycles or provide direct access to specific trailheads. It's often more convenient to travel by car to reach the starting points of the trails.
The area is highly rated by the komoot community, with an average score of 4.2 stars. Reviewers often praise the diverse terrain, from high mountain scenery to unique karstic landscapes and dense forests. The network offers options for various ability levels, ensuring a rewarding experience for many.
Generally, no specific permits are required for mountain biking on established trails in Roncal/Erronkari. However, as parts of the region are within natural parks or protected areas, it's always important to respect local regulations, stay on marked trails, and avoid disturbing wildlife or natural habitats. For more information on the wider Navarrese bike spaces, you can visit visitnavarra.es.


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