5.0
(2)
32
riders
4
rides
Gravel biking around Mutiloa features challenging routes through varied terrain, situated on the slopes of the Aizkorri massif and offering access to the Aizkorri-Aratz Natural Park. The region is characterized by significant elevation changes, including mountain passes and river valleys, with vast landscapes of pine and oak forests. Trails often incorporate historic greenways, such as the Mutiloa-Ormaiztegi greenway, and river pathways, providing a mix of natural and engineered landscapes for exploration.
Last updated: May 23, 2026
10
riders
33.3km
02:17
750m
750m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
6
riders
41.2km
03:08
890m
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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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.
5
riders
23.5km
01:43
640m
640m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4
riders
26.2km
01:56
500m
500m
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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Road between Antzuola and Alto de Descarga. Good asphalt and hardly any traffic.
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Beautiful town nestled in the Guipuzcoan valley of Alto Urola. The name of the town comes from Basque and means 'place of the elm'. The Urola River runs through the town and separates it from the municipality of Urretxu. Zumárraga is also the end point of the Urola greenway, a cycle route that runs through a beautiful rural landscape. A destination with a lot of charm and personality.
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Beautiful town nestled in the Guipuzcoan valley of Alto Urola. The name of the town comes from the Basque and means 'place of the elm'. The river Urola runs through the town and separates it from the municipality of Urretxu. Zumarraga is also the end point of the Vía Verde del Urola, a cycling route that runs through a beautiful rural landscape. A destination with a lot of charm and personality.
2
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The climb to Gorla is a classic amateur category cycling event that takes place in Spain, in the Gipuzkoan town of Vergara. This classic is a professional nursery in the area!
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There are 8 gravel bike trails around Mutiloa, all rated as difficult, catering primarily to experienced riders. These routes feature significant elevation changes and varied terrain.
Gravel biking routes in Mutiloa are generally challenging, characterized by significant elevation changes and varied terrain. All 8 available routes are rated as difficult, making them suitable for experienced riders.
The gravel biking routes around Mutiloa are primarily designed for experienced riders, featuring challenging terrain and significant climbs. There are no routes currently listed as easy or moderate, so beginners or families with young children might find them too demanding.
The gravel bike trails in Mutiloa vary in distance. For example, the Trekutz Picnic Area – Aizpurutxo Riverside Pathway loop from Zumarraga is about 20.7 miles (33.3 km), while the Vasco-Navarro Greenway – Azua Footbridge loop from Oñati extends to 53.7 miles (86.5 km).
Yes, all the listed gravel bike routes around Mutiloa are circular. Examples include the Mirandaola Forge and Park – Udana Pass Ascent loop from Legazpi and the Ormaiztegi Viaduct – Aztiria loop from Olaberri, both offering varied terrain and scenic views.
Many routes offer scenic viewpoints and pass by interesting attractions. You can find mountain passes like Udana Pass Ascent and Collado de Biozkorna. Some trails also offer views towards areas like Bergara, as seen on the View of Bergara – Plaza de los Fueros loop from Oñati route.
The gravel biking experience in Mutiloa is highly rated by the komoot community, with an average score of 5.0 stars. Riders often praise the challenging mountain passes, historic greenways, and river valleys that define the region's diverse terrain.
Given the significant elevation changes and varied terrain, spring and autumn generally offer the most pleasant conditions for gravel biking in Mutiloa, with milder temperatures and potentially vibrant scenery. Summer can be warm, and winter might bring colder temperatures and potentially challenging conditions at higher elevations.
Beyond the routes themselves, the region boasts several natural highlights. You can find impressive mountain peaks such as Aizkorri Summit (1,523 m) and Aketegi Summit. There are also several mountain passes, including Atagoiti and Otzaurte, which are often incorporated into the routes.
The terrain around Mutiloa is diverse, featuring challenging mountain passes, historic greenways, and river valleys. You'll encounter significant elevation changes, offering a mix of natural and engineered landscapes, perfect for advanced gravel cycling.
While specific parking details for each starting point are best checked on individual route pages, many routes around Mutiloa begin from towns like Legazpi, Zumarraga, and Oñati, where public parking options are typically available. It's advisable to check local parking regulations before your ride.


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