4.8
(8)
147
riders
8
rides
Gravel biking around Aduna, located in the Basque Country, offers a challenging landscape characterized by rugged, mountainous terrain. The region features significant elevation changes, including steep climbs, making it suitable for experienced gravel cyclists. Expect a mix of rolling hills and potentially forested areas, providing varied ascents and descents. This area is known for its green, natural environment, offering a demanding yet rewarding experience for those seeking no traffic gravel bike trails.
Last updated: July 2, 2026
4.7
(3)
55
riders
50.2km
03:01
640m
640m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
12
riders
95.6km
06:24
1,670m
1,670m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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10
riders
110km
07:04
1,760m
1,760m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
7
riders
59.4km
04:49
1,380m
1,380m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
32.0km
02:37
930m
930m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Aduna
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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Although you have to make a slight detour, it is worth visiting this bridge and taking a photo on it if you want.
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climb with 3 different slopes from Leitza about 6km from Goizueta about 15km from Santesteban about 23km
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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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There are 9 dedicated traffic-free gravel bike trails around Aduna featured in this guide. These routes offer a fantastic way to explore the rugged and beautiful Basque Countryside without vehicle interference.
The trails around Aduna are generally quite challenging. All routes listed in this guide are rated as 'difficult' due to the region's mountainous terrain, which includes significant climbs like the famous 'muro de Aduna'. While traffic-free, they require a good level of fitness and gravel biking experience.
You can expect varied and demanding terrain. The Basque Country is known for its green, mountainous landscape, so routes will feature rolling hills, steep ascents, and descents. The 'muro de Aduna' itself is a testament to the challenging nature of the area, making for a rigorous but rewarding gravel biking experience.
Yes, many of the routes are designed as loops, allowing you to start and finish in the same location. For example, the Plazaola Greenway – Witches' Bridge loop from Andoain-Centro offers a substantial circular ride, as does the Oria River – Andoain loop from Asteasu.
The Basque Country generally offers pleasant conditions for cycling from spring through autumn. While specific recommendations depend on personal preference, these seasons typically provide milder temperatures and less rainfall, making the challenging terrain more enjoyable. Winter can be ridden, but be prepared for cooler, potentially wetter conditions.
Absolutely. For a truly epic ride, consider the Santa Cruz Tunnel – Witches' Bridge loop from Tolosa, which spans over 110 kilometers and features significant elevation gain, offering a full day of challenging, traffic-free gravel biking.
The komoot community highly rates the gravel biking experience around Aduna, with an average score of 5.0 stars. Riders often praise the challenging nature of the routes, the stunning green landscapes, and the peace of mind that comes with traffic-free exploration in this beautiful region.
While the focus is on natural, traffic-free paths, the region's history is often intertwined with its landscape. Routes like the Santa Cruz Tunnel – Witches' Bridge loop from Andoain-Centro traverse areas with local historical significance, offering glimpses into the past amidst the natural beauty.
While all routes are rated difficult, some are shorter in distance. The Oria River – Andoain loop from Asteasu, at just over 45 kilometers, offers a challenging but more condensed traffic-free gravel experience compared to the longer routes.
The routes offer breathtaking views of the lush, green, mountainous Basque countryside. You'll experience panoramic vistas of rolling hills, dense forests, and potentially glimpses of the coast given the region's proximity to San Sebastian, providing a diverse and picturesque backdrop for your ride.
Yes, the Plazaola Greenway – Witches' Bridge loop from Andoain-Centro incorporates sections of the Plazaola Greenway, which is a converted old railway line. These greenways often provide smoother, more consistent surfaces and are inherently traffic-free, making them ideal for gravel biking.


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