4.5
(78)
1,199
riders
21
rides
Gravel biking around Iruraiz-Gauna offers diverse terrain, characterized by rolling landscapes, open fields, and routes that often follow historical pathways. The region features significant water bodies like the Ullibarri-Gamboa Reservoir and the Zadorra River, providing scenic backdrops for rides. Elevation changes are present, with some routes including moderate climbs and descents, making it suitable for various skill levels.
Last updated: May 5, 2026
4.7
(3)
73
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
37
riders
103km
07:58
1,090m
1,090m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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17
riders
61.4km
04:21
930m
930m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3.5
(2)
19
riders
31.3km
02:12
350m
360m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
21
riders
93.7km
07:12
720m
720m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Beautiful views. Be careful if you're fishing on the bridge; it's very narrow and you could fall hard.
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There is light at the end of the tunnel... One yes and one no... But it looks perfect... The only thing that makes it look really cool.... Hahahahaha
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A good place to stock up on supplies before climbing Gereñu along the trail and descending to Maestu. Fountain and shaded benches
2
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A long, non-floating bridge that spans the swamp from side to side. During the day, many fishermen
2
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Good area for walking or cycling
0
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Simple route for all audiences
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Within the path surrounding the Ullibarri Ganboa reservoir, there is this very peculiar footbridge that crosses the water, offering a totally different view from any other you can see surrounding a reservoir...
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There are over 20 gravel bike routes in the Iruraiz-Gauna region, offering a variety of challenges from moderate to difficult. The area is well-regarded by the komoot community, with an average rating of 4.6 stars from over 60 reviews.
While most routes in Iruraiz-Gauna are classified as moderate to difficult, some sections of the moderate trails, particularly those around the Ullibarri-Gamboa Reservoir, might be suitable for families or beginners looking for a challenge. For example, the Ullibarri-Gamboa Reservoir – Ullíbarri-Gamboa Reservoir loop from Mendixur is a moderate route offering varied surfaces and open views.
The terrain around Iruraiz-Gauna is diverse, featuring rolling landscapes, open fields, and routes that often follow historical pathways. You'll encounter significant water bodies like the Ullibarri-Gamboa Reservoir and the Zadorra River, providing scenic backdrops. Expect moderate climbs and descents, making it suitable for various skill levels.
Yes, Iruraiz-Gauna offers several long-distance routes for experienced gravel bikers. For instance, the Azua Footbridge – View of the Zadorra River loop from Alegría-Dulantzi is a challenging 63.3-mile (101.8 km) path with significant elevation gain, traversing riverine landscapes and rural areas.
Many of the gravel bike routes in Iruraiz-Gauna are designed as loops, allowing you to start and finish at the same point. Examples include the popular Ullibarri-Gamboa Reservoir loop and the Aberasturi Fountain loop from Arraia-Maeztu.
The region boasts several natural attractions. Along various routes, you might encounter features like the Igoroin Gorge Waterfalls, the impressive Zalamportillo Arch, or the scenic Fajeta Peña Rasgada gorge. Many routes also follow the Zadorra River or circle the Ullibarri-Gamboa Reservoir.
Yes, the region features historical pathways, including sections of the Vasco-Navarro Greenway. You can explore routes like the Sanctuary of Estibaliz – VASCO-NAVARRO GREENWAY loop from Argandoña, which offers a moderate ride through historical landscapes.
The best seasons for gravel biking in Iruraiz-Gauna are typically spring and autumn, when temperatures are mild and the landscapes are vibrant. Summer can also be pleasant, though it's advisable to start early to avoid the midday heat. Winter rides are possible, but conditions may vary, with potential for colder temperatures and occasional wet or muddy sections.
Absolutely. For those seeking a significant challenge, routes like the Vasco-Navarro Railway Bridge – Atauri Tunnel loop from Arabako Mendialdea cover nearly 94 kilometers with over 700 meters of elevation gain, providing an enduring and rewarding experience.
Gravel biking in Iruraiz-Gauna is defined by its blend of reservoir loops, river valleys, and historical greenways. The region offers a unique mix of moderate to difficult challenges, allowing riders to experience both endurance rides and scenic exploration through diverse rural landscapes and natural monuments.


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