5.0
(1)
27
riders
2
rides
Gravel biking around Gaintza features challenging routes through a landscape characterized by significant elevation changes and varied terrain. The region's gravel bike trails often incorporate historic structures like viaducts and tunnels, alongside natural features such as hills and valleys. These routes provide demanding climbs and descents, suitable for experienced gravel bikers. The area's geography offers a robust environment for off-road cycling.
Last updated: July 2, 2026
10
riders
110km
07:04
1,760m
1,760m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
5
riders
43.5km
03:14
880m
880m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.

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4
riders
26.2km
01:56
500m
500m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5
riders
36.8km
02:50
780m
780m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
28.4km
02:27
860m
860m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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This area was a mining complex, the Mutiloa mining district, from the late 19th century. In 1911, 162 miners worked there, and in 1912, 34,500 tons of iron ore were stored and washed. After being transported by rail to Ormaiztegi, it was shipped to European steelworks. (https://www.mutiloakomeatzaritza.eus/es/la-via-verde/)
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The Ormaiztegi Viaduct (inaugurated on August 15, 1864) is the town's most emblematic symbol. Designed by engineer Alexander Lavalley, a predecessor of Gustave Eiffel, it stands in a beautiful landscape overlooking the Eztanda River. It is the most important structure on the Madrid-Paris railway line, spanning 289 meters in length and 34 meters in height. Its 18,000 tons are supported by four pillars. The double track was installed in 1912 and electrified in 1928. It is currently disused and forms part of the Basque Country's cultural heritage.
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Great route for beginners as has mainly constant and light slopes. Only half a dozen uphills the first 30 km from Pamplona.
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One of the ideal areas to start the Plazaola greenway
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That bridge is called "INTUIA-ko zubia" the INTUIA farmhouse is next to it. The misnamed "witches' bridge" is called UNANIBI-ko zubia, right in the Otita park (beginning of the Leitzaran valley). Don't forget to bring lights to cross the numerous tunnels in this valley!! Not to see but to be seen.
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A must when you pass through this area. Stopping and having a coffee is almost mandatory. 😉
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One of the best greenways we know.
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This beautiful city located in the valley of the Oria River is surrounded by small mountains and green meadows. Thus, it offers you the possibility of escaping from the noise of the city in a few minutes. Furthermore, in its historic center is the church of San Martín de Tours, which is undoubtedly worth a visit.
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The gravel biking routes around Gaintza are primarily designed for advanced ability levels. They feature significant elevation changes, varied terrain, and demanding climbs and descents, making them less suitable for beginners or families seeking easy rides.
Routes in Gaintza vary in length, offering options for different endurance levels. For example, the Santa Cruz Tunnel – Witches' Bridge loop from Tolosa is a longer ride at 68.2 miles (109.8 km), while the Ormaiztegi Viaduct – View of Aztiria from Mutiloa loop from Beasain is a challenging 26.7 miles (42.9 km) path.
Gravel biking in Gaintza is characterized by hilly terrain, often incorporating historic structures like viaducts and tunnels, alongside natural features such as valleys and rural paths. Expect a robust environment for off-road cycling with varied surfaces.
Yes, many of the gravel bike routes in Gaintza are loops. Examples include the Olantza Borda – Berrobi loop from Tolosa-Centro and the Gaztelu Church – Berrobi loop from Tolosa, allowing you to start and finish in the same location.
The routes often pass by historic structures and offer scenic views. You can expect to see landmarks such as the Santa Cruz Tunnel and Witches' Bridge on some trails. The Ormaiztegi Viaduct – View of Aztiria from Mutiloa loop from Beasain offers views of Aztiria and passes the Ormaiztegi Viaduct.
The region boasts several natural highlights. You might encounter the tranquil Lareo Reservoir, the impressive Amezketa Stream Waterfall, or enjoy views from summits like Txindoki (1,346 m) and Gamboa Summit.
The gravel biking routes in Gaintza are highly rated by the komoot community, with an average score of 5.0 stars from over 1 review. More than 30 gravel bikers have explored the varied terrain, often praising the challenging nature and scenic beauty of the routes.
While specific 'hidden' trails aren't explicitly listed, the region's network of rural paths and varied terrain means there are always opportunities to explore less-traveled sections. The Ormaiztegi Viaduct – Lierni Path loop from Beasain offers a slightly shorter, yet still challenging, option that might provide a different perspective.
Given the challenging terrain and potential for varied weather, spring and autumn generally offer the most favorable conditions for gravel biking in Gaintza, with milder temperatures and less extreme weather. However, always check local forecasts before heading out.
Many routes start from towns like Tolosa or Beasain, where public parking facilities are typically available. For example, routes like the Santa Cruz Tunnel – Witches' Bridge loop begin from Tolosa, and the Ormaiztegi Viaduct – View of Aztiria from Mutiloa loop starts from Beasain.
Gaintza's gravel biking is known for its significant elevation changes, historic viaducts, and rural paths, offering a robust environment for advanced riders. While Zaldibia also offers cycling opportunities, Gaintza's routes are particularly noted for their demanding climbs and descents through a landscape rich in both natural and historical features.


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