4.5
(6)
84
riders
9
rides
Gravel biking around Errezil offers a network of routes through the varied terrain of the Basque Country. The region is characterized by rolling hills, river valleys, and dense woodlands, providing diverse conditions for gravel cyclists. Expect a landscape shaped by natural waterways, agricultural areas with apple orchards, and traditional white farmhouses, with elevations that present both gradual climbs and more challenging ascents. The trails often follow established paths and rural roads, connecting small towns and natural features like the Errezil…
Last updated: July 2, 2026
4.5
(6)
42
riders
54.5km
04:13
1,020m
1,000m
This difficult 33.8-mile (54.5 km) gravel route from Zarautz to Lekeitio offers challenging climbs and stunning Basque Coast views.
10
riders
110km
07:04
1,760m
1,760m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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3
riders
32.0km
02:37
930m
930m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
11
riders
35.0km
02:21
720m
720m
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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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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Lonely coastal road for cycling with a beautiful beach and bars for a break.
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Good views and the cafe is nice for a coffee/beer/snack with a view
2
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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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The Errezil region offers a diverse landscape characterized by rolling hills, picturesque river valleys, and dense woodlands. You'll encounter trails that follow established paths and rural roads, connecting small towns and natural features. Expect a mix of gradual climbs and more challenging ascents, providing varied conditions for gravel cyclists.
While the gravel biking routes around Errezil are primarily rated as moderate to difficult, there are a few less demanding sections. For a moderate option that still offers a good distance, consider the Aizpurutxo Riverside Pathway – Mirandaola Forge and Park loop from Azkoitia, which is 43.6 km long and takes about 2 hours 58 minutes.
The duration of gravel bike trails around Errezil varies significantly based on their length and difficulty. For instance, the moderate Aizpurutxo Riverside Pathway – Mirandaola Forge and Park loop from Azkoitia can be completed in under 3 hours, while longer, more challenging routes like the Santa Cruz Tunnel – Witches' Bridge loop from Tolosa can take over 9 hours due to its 109.8 km distance and significant elevation gain.
Yes, many of the gravel bike routes around Errezil are designed as loops, allowing you to start and finish in the same location. Examples include the challenging Oria River – Andoain loop from Asteasu and the Azkoitia – Urola Greenway loop from Azkoitia, both popular choices among local riders.
The region offers stunning natural beauty. While riding, you might encounter views of prominent peaks such as Uzturre Summit or Hernio Summit. The trails often follow river valleys, providing picturesque riverside scenery. The Aizpurutxo Riverside Pathway, for example, offers pleasant views along the water.
The gravel biking routes around Errezil are highly regarded by the komoot community, holding an impressive average score of 4.75 stars from several reviews. Riders often praise the varied terrain, the connection to small towns, and the natural beauty of the river valleys and woodlands.
Absolutely. The Errezil area is well-suited for experienced gravel bikers seeking a challenge, with 11 out of 13 routes rated as difficult. A notable option is the Santa Cruz Tunnel – Witches' Bridge loop from Tolosa, which spans nearly 110 km with significant elevation gain, offering a demanding and rewarding ride.
The Basque Country generally experiences mild weather, making spring and autumn ideal for gravel biking in Errezil. During these seasons, temperatures are comfortable, and the landscape is vibrant. Summer can also be pleasant, especially in the mornings or late afternoons, while winter might bring cooler, wetter conditions, potentially leading to muddy trails.
Many routes in Errezil connect small towns and rural areas, increasing the likelihood of finding cafes or local establishments. While specific stops aren't detailed for every route, planning your ride through towns like Azkoitia or Asteasu (depending on your chosen route) will offer opportunities for refreshments.
Beyond the trails themselves, the region boasts several points of interest. You can find various mountain peaks like Erlokurutz (Erlo Cross) Summit and Pagoeta Cross. There are also mountain huts such as Xoxote Refuge and Friends of Hernio Shelter, which can be interesting destinations or waypoints on longer rides.
Gravel biking in Errezil is characterized by its network of trails through rolling hills, river valleys, and dense woodlands, offering a mix of moderate to challenging routes. While Zestoa, being nearby, shares some similar geographical features, Errezil's specific trails are known for connecting small towns and agricultural areas, often following established rural roads and paths, providing a distinct regional flavor to your ride.

