4.4
(46)
720
riders
42
rides
Mountain biking around Irurtzun offers a diverse landscape characterized by abrupt and mountainous terrain, situated within the natural corridor of La Barranca, linking the Sierras de Aralar and Andía. The region features the picturesque Larraun River valley, carved through limestone, and dense woodlands of oaks and beeches. This varied topography provides a range of mountain bike trails, from converted railway lines to challenging mountain ascents.
Last updated: May 10, 2026
1
riders
22.9km
02:29
800m
800m
This moderate 14.2-mile mountain biking route combines the smooth Plazaola Greenway with challenging mountain trails and scenic views.
35.6km
04:09
1,070m
1,070m
This difficult 22.1-mile mountain biking loop in Sierra de Aralar offers challenging climbs, rewarding panoramic views, and historical landm

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46
riders
45.4km
04:48
1,470m
1,470m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
5.0
(1)
10
riders
45.5km
03:06
420m
420m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
10
riders
50.4km
03:06
590m
590m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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It is important to bring lights for the tunnels and some clothing for the long tunnels, including in summer.
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Restored and well-preserved building to protect you from the cold, wind and rain, it is also clean to pack your bag and bivouac.
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Service station with public bathrooms and showers, next door a bar-restaurant with affordable prices and good food.
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Spectacular panorama of rocky peaks along the EV 1 in this stretch that uses the Plazaola green way
4
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San Miguel de Aralar is a beautiful Romanesque sanctuary from the 11th century located in the heart of the natural park.
1
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Hard but beautiful climb on the trail. Spectacular views.
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There are over 40 mountain bike trails around Irurtzun, catering to various skill levels. The komoot community has rated these routes highly, with an average score of 4.5 stars.
Yes, Irurtzun offers trails suitable for less experienced riders and families. The Eltxumendi and San Gregorio Loop via Plazaola Greenway is a moderate option that incorporates sections of the historic Plazaola Greenway, which is generally flatter and more accessible. The Plazaola Greenway itself is a former railway line, making it a good choice for those seeking a less challenging ride, though some sections are unpaved.
For experienced mountain bikers seeking a challenge, routes like the San Miguel de Aralar and Artxueta Loop offer significant elevation changes and cover 22.1 miles (35.6 km). Another difficult option is the Gulina Viaduct – Plazaola Greenway loop from Irurtzun, which is 28.1 miles (45.4 km) long and features substantial climbs.
Many trails in Irurtzun pass by notable natural features. The dramatic Dos Hermanas gorge, carved by the Larraun River, is a spectacular sight where vultures can often be observed. You can also find trails that lead to Eltxumendi Summit or offer views of Txurregi Summit (1,121 m). The Plazaola Greenway itself is a significant attraction, winding through an idyllic river valley.
Yes, several mountain bike routes around Irurtzun are circular, allowing you to start and end in the same location. Examples include the Eltxumendi and San Gregorio Loop via Plazaola Greenway and the Plazaola Greenway – Plazaola Greenway loop from Irurtzun.
Irurtzun's diverse vegetation and mountainous terrain make it enjoyable across seasons. However, for optimal conditions, spring and autumn generally offer milder temperatures and beautiful scenery. While the region can be ridden year-round, be aware that some sections of the Plazaola Greenway are unpaved, which might be less comfortable in very wet conditions.
While specific details on public transport for bikes to Irurtzun are not readily available, the Navarre region is generally supportive of cyclists. For detailed information on public transport options that accommodate bicycles, it's advisable to check local transport authority websites or contact the Irurtzun town hall directly.
The Plazaola Greenway is a fantastic route, but it's important to note that large sections are unpaved, making it best suited for mountain bikes rather than road bikes. Additionally, the route features unlit tunnels, so carrying a bike light is essential for safe passage.
The mountain bike trails in Irurtzun are highly rated by the komoot community, with an average score of 4.5 stars from over 40 reviews. Reviewers often praise the diverse landscapes, from the picturesque Larraun River valley to the challenging ascents in the Sierras de Aralar and Andía, as well as the unique experience of riding along the historic Plazaola Greenway.
Yes, the Aixita Castle Ruins are located on a fortified promontory and can be an interesting destination for those looking to combine mountain biking with a touch of history. This site also offers opportunities to observe vultures.
The Navarre region, where Irurtzun is located, provides services for cyclists, including public self-repair stations equipped with tools and pumps. Some campsites in the wider area may also offer wash areas and workshops. For specific locations in Irurtzun, local tourist information centers would be the best resource.


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