4.5
(5)
36
riders
8
rides
Gravel biking around Foz de Arbayun / Arbaiungo Arroila offers routes through a landscape characterized by dramatic limestone gorges, carved by the Salazar River, and surrounded by diverse terrain. The region features a mix of wide dirt tracks, former railway lines, and undulating paths. This area, including the nearby Foz de Lumbier, provides varied surfaces suitable for gravel bikes, from flat sections to more challenging climbs. The natural preserve is known for its impressive cliffs and rich biodiversity, providing a…
Last updated: July 13, 2026
4.5
(2)
3
riders
50.8km
03:38
710m
720m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.0
(1)
6
riders
35.8km
02:32
460m
460m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5.0
(2)
13
riders
15.1km
00:55
210m
210m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
22.1km
01:48
260m
260m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4
riders
32.0km
02:15
450m
450m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Foz de Arbayun / Arbaiungo Arroila
Just after leaving the parking lot, about 300 meters away, take the detour to the left and follow the path very easily and beautifully. If you have decent binoculars, you can see some chicks in the vulture colonies, depending on the time of year, and some adults all year round. Highly recommended, short and sweet.
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Pretty passage in the countryside
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It is a short but interesting walk. Going clockwise there is a possibility to swim shortly after the tunnel. The water is very cold
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A very pleasant little village with a beautiful castle. A visit inside is highly recommended; they store your bikes in the courtyard :)
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Beautiful little greenway, very short, but worth enjoying!
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There are currently 6 gravel bike trails available in the Foz de Arbayún / Arbaiungo Arroila region. These routes offer a mix of moderate and difficult options for exploration.
You can expect a diverse range of terrain, from wide dirt tracks and former railway lines to undulating paths. The region is characterized by dramatic limestone gorges and river valleys, offering varied surfaces suitable for gravel bikes, including both flat sections and more challenging climbs.
The region is renowned for its spectacular natural beauty. You'll encounter the dramatic Foz de Arbayún gorge with its 300-meter high cliffs, carved by the Salazar River. The Mirador de Iso offers panoramic views of the gorge. Additionally, nearby Foz de Lumbier features another impressive gorge and the scenic Irati Greenway, a former railway line ideal for cycling.
Yes, Foz de Arbayún is a protected nature reserve and a Special Protection Area for Birds (ZEPA). It's home to the largest colony of Griffon Vultures in Navarre, so you'll frequently see these impressive birds soaring overhead. Other raptors like Bearded Vultures and Golden Eagles are also present, along with diverse wildlife such as wild boars, foxes, and deer.
Yes, some routes incorporate historical sites. For example, the Javier Castle – Castle of Xavier loop from Javier is a difficult 31.6-mile trail that explores varied terrain and passes historical landmarks, including the Castle of Xavier.
The autumn months are particularly vibrant, with the gorge's landscapes displaying a spectacular color palette. Spring and early summer also offer pleasant conditions for cycling, with milder temperatures and lush greenery. While winter biking is possible, be prepared for potentially colder and wetter conditions, and always check local weather forecasts.
Yes, the area offers routes for various abilities. While there are no easy routes listed, you can find 2 moderate and 4 difficult trails. For instance, the Foz de Lumbier (Lumbier Gorge) – Lumbier Gorge loop from Lumbier is a moderate 9.4-mile trail, while the Irati Greenway – Lumbier Gorge loop from Liédena presents a more difficult 22.7-mile challenge.
For families, the nearby Foz de Lumbier offers the 'Via Verde' (greenway), a flat riverside trail that follows a former railway track. While not explicitly listed as a gravel route in this guide, its well-maintained path is suitable for cyclists of varying ages and skill levels, providing a comfortable and scenic experience.
As Foz de Arbayún is a protected nature reserve, regulations regarding dogs can vary. It's generally advisable to keep dogs on a leash to protect wildlife and ensure their safety. Always check specific trail signage or local park authority guidelines before bringing your dog.
Yes, parking is generally available at key access points and viewpoints. For instance, the Mirador de Iso, which offers a spectacular view of the Foz de Arbayún, is easily reachable by car and typically has parking facilities. Trailheads for routes like those around Lumbier also usually have designated parking areas.
While direct public transport to every trailhead might be limited, the region is accessible. Major towns like Lumbier, which serves as a starting point for several routes including the Iru Bide Restaurant loop from Lumbier, may have bus connections from larger cities in Navarre. It's recommended to check local bus schedules for the most up-to-date information.
Yes, many of the gravel routes in the area are designed as loops, allowing you to start and finish at the same point. Examples include the Javier Castle – Castle of Xavier loop from Javier and the Foz de Lumbier (Lumbier Gorge) – Lumbier Gorge loop from Lumbier.
Foz de Arbayún is a protected nature reserve. While general access for activities like hiking and cycling on designated paths is usually permitted, it's always best to verify with the local park authority or visitor center for any specific permit requirements, especially for larger groups or off-trail activities.


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