4.6
(41)
497
riders
25
rides
Gravel biking in Aiako Harria offers diverse terrain for exploration, characterized by ancient granite massifs, extensive oak and beech woods, and numerous streams. The region features riverside paths, routes through old railway tunnels, and coastal sections. This area provides a mix of natural and historical features suitable for gravel cycling, with terrain varying from relatively flat greenways to more challenging climbs around reservoirs and cols.
Last updated: July 3, 2026
4.5
(4)
49
riders
32.2km
01:46
320m
320m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3.8
(6)
37
riders
59.2km
04:17
1,220m
1,220m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.

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4.0
(3)
14
riders
50.2km
03:34
1,120m
1,120m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.7
(3)
19
riders
67.4km
03:57
930m
930m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.4
(7)
130
riders
76.2km
04:14
820m
820m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Next to it is a whitewater kayak training area.
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Route demanded by percentages
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Without lights, can ride slowly in the middle for a short while until “you can see the light at the end of the tunnel”.
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It is located along the Bidasoa green way built on the site of a former mining railway. Excellent idea for crossing the Pyrenees.
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Excellent cycle route built on the site of a former mining railway.
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The Bidassoa green way uses an old mining railway and, from the blue Atlantic Ocean, rises towards the Pyrenees.
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Beautiful landscapes that vary significantly from the sea of Hendaye into the green and bucolic environment of the Pyrenees
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Along the EV3, which from Hendaye on the Atlantic goes up the Pyrenees, there are various tunnels of the former Bidassoa railway
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Aiako Harria offers a wide selection of gravel biking routes, with over 40 trails documented on komoot. These routes cater to various skill levels, ranging from easy greenways to challenging climbs.
The gravel biking in Aiako Harria is predominantly challenging, with 34 out of 42 routes rated as difficult. There are also 7 moderate routes and 1 easy route, ensuring options for different experience levels. The terrain often includes significant elevation changes, especially around reservoirs and cols.
Yes, for beginners or those seeking a relaxed ride, the Riverside Path in Spain – Bidasoa Greenway loop from Irun is an excellent choice. This easy 17 km route follows the scenic Bidasoa Greenway, offering a relatively flat and enjoyable experience.
Gravel biking in Aiako Harria features a diverse mix of landscapes. You'll find riverside paths along the Bidasoa Greenway, routes that traverse old railway tunnels, and coastal sections near Hendaye Beach. The region also includes climbs around reservoirs and cols, offering varied natural and historical features.
Many of the gravel routes in Aiako Harria are designed as loops. For example, the Riverside Path in Spain – Bidasoa Greenway loop from Irun is a popular easy circular option. For a more challenging loop, consider the Hendaye Beach – Boulevard de la Mer - Hendaye loop from Oiartzun, which covers coastal areas.
Along the gravel routes, you can discover several interesting points. The region is known for its historic railway tunnels, such as those found on the Bidassoa Railway Tunnels – Lantxurda Tunnel loop from Ventas de Irún. You might also encounter natural monuments like the Aitzondo Waterfall or historical sites such as the Irugurutzeta Furnaces and the Arditurri Mining Complex.
While specific recommendations depend on personal preference, the region's diverse terrain makes it enjoyable across multiple seasons. Spring and autumn generally offer pleasant temperatures and vibrant scenery. Some routes, particularly those at higher elevations or through tunnels, might be affected by weather conditions in winter, so checking forecasts is advisable.
Absolutely. Aiako Harria is well-suited for experienced gravel bikers, with 34 routes rated as difficult. A challenging option is the Lantxurda Tunnel – Endara-San Anton Reservoir loop from Hendaia, which features significant elevation gain and covers varied terrain around the reservoir.
The gravel biking routes in Aiako Harria are highly regarded by the komoot community, holding an average rating of 4.7 stars from over 70 reviews. More than 850 gravel bikers have explored the area using komoot, often praising the diverse landscapes, from scenic greenways to challenging mountain passes and historic tunnels.
Yes, the region is notable for its historic railway tunnels. The Bidassoa Railway Tunnels – Lantxurda Tunnel loop from Ventas de Irún is a prime example, offering a unique experience as you cycle through these old passages. Another route, Col de Lizuniaga – Lantxurda Tunnel loop from Hendaye, also incorporates tunnel sections.


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