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Gravel rides
Spain
Basque Country
Gipuzkoa
Donostia/San Sebastián

Oiartzun

The best traffic-free bike rides around Oiartzun

4.5

(36)

396

riders

8

rides

Gravel biking around Oiartzun is characterized by its diverse topography, ranging from rugged mountains to serene river valleys and coastal stretches. The region features the granite massif of Aiako Harria Natural Park, lush forests, and the picturesque Oiartzun River Valley. Riders can explore varied landscapes including historical trails and paths along the Jaizkibel Mountain, offering a mix of challenging climbs and gentler routes.

Best no traffic gravel bike trails around Oiartzun

  • The most popular no traffic gravel bike trail is Bidassoa Railway Tunnels – Lantxurda Tunnel loop from Ventas de Irún, a 36.8 miles (59.3 km) trail that takes 4 hours 17 minutes to complete. This difficult route navigates through historic railway tunnels and mountainous terrain.
  • Another top favourite among local gravel bikers is Lantxurda Tunnel – Endara-San Anton Reservoir loop from Hendaia, a difficult 31.1 miles (50.1 km) path. This route offers views of reservoirs and the surrounding mountainous landscape.
  • Local gravel bikers also love the Alto de Agiña – Endara-San Anton Reservoir loop from Oiartzun, a 27.2 miles (43.8 km) trail leading through hills and past reservoirs, often completed in about 3 hours 17 minutes.
  • Gravel biking around Oiartzun is defined by mountainous terrain, river valleys, and historical trails. The network offers options for different ability levels, from easily accessible paths to challenging climbs.
  • The routes in Oiartzun are highly rated by the komoot community with an average score of 4.4 stars from more than 40 reviews. More than 400 gravel bikers have used komoot to explore Oiartzun's varied terrain.

Last updated: July 2, 2026

3.8

(6)

37

riders

#1.

Bera Bridge – Bidassoa Railway Tunnels loop from Ventas de Irún

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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Hard

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard
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Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard
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Popular around Oiartzun

Between the sea and the mountains — GR 121: Tour of Guipúzcoa

Traffic-free bike rides around Oiartzun

Traffic-free bike rides around Oiartzun

Other adventures around Oiartzun

Between the sea and the mountains — GR 121: Tour of Guipúzcoa

Hiking Collection by

Sofía_Ibáñez

Tips from the Community

Koldo
October 7, 2025, Former Train Station

Next to it is a whitewater kayak training area.

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Route demanded by percentages

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very nice view

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Daniel
June 16, 2025, Jaizkibel Summit

great and spectacular in good weather

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Also a great place for a breather when it rains...

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Sébastien
April 10, 2025, Jaizkibel

The detour to the "summit" is worthwhile for even more panoramic views

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Magnificent view of the Bidasoa and the Bay of Txingudi!!!

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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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Frequently Asked Questions

What kind of terrain can I expect on no-traffic gravel trails in Oiartzun?

Oiartzun's no-traffic gravel trails offer a diverse experience, ranging from the rugged granite massif of Aiako Harria Natural Park to the serene paths along the Oiartzun River Valley. You'll encounter a mix of dense forests, historical paths, and potentially coastal sections on Jaizkibel Mountain, providing varied surfaces suitable for gravel biking.

Are there challenging no-traffic gravel routes in Oiartzun?

Yes, the region is known for its demanding terrain. Many of the no-traffic gravel routes in Oiartzun are rated as difficult, featuring significant elevation gains. For example, the Bidassoa Railway Tunnels – Lantxurda Tunnel loop from Ventas de Irún covers nearly 60 km with over 1200 meters of ascent, offering a substantial challenge for experienced riders.

What natural features can I discover on no-traffic gravel bike rides in Oiartzun?

Riding through Oiartzun's no-traffic gravel trails allows you to explore stunning natural features. You'll find yourself amidst the lush forests and rugged cliffs of Aiako Harria Natural Park. Keep an eye out for the picturesque Aitzondo Waterfall or the unique rock formations at Peña de Ataloi. The region's diverse landscapes, from river valleys to mountain peaks, are a constant highlight.

Are there historical sites or landmarks accessible by gravel bike in Oiartzun?

Absolutely. Oiartzun is rich in history. A prominent feature is the Arditurri Greenway, an old railway track converted into a cycling path that runs through the ancient Roman mining complex within Aiako Harria Natural Park. You can also discover megalithic monuments like dolmens and cromlechs along various routes. Additionally, the Ermita de Guadalupe – Jaizkibel loop from Pasaia offers views of historical fortifications like the Fort of Nuestra Señora de Guadalupe.

When is the best time of year to enjoy no-traffic gravel biking in Oiartzun?

The Basque Country generally enjoys mild weather, making spring and autumn ideal for gravel biking in Oiartzun. These seasons offer pleasant temperatures and lush landscapes. Summer can also be good, especially for higher elevation routes, but be prepared for warmer conditions. Winters are typically mild but can bring more rain.

Are there options for longer no-traffic gravel bike tours in Oiartzun?

Yes, Oiartzun offers several long-distance no-traffic gravel bike tours. For instance, the Bidassoa Railway Tunnels – Lantxurda Tunnel loop from Ventas de Irún is nearly 60 km long, and the Lantxurda Tunnel – Endara-San Anton Reservoir loop from Hendaia stretches over 50 km, providing extensive riding opportunities.

Can I find circular no-traffic gravel bike routes in Oiartzun?

Many of the no-traffic gravel bike routes in Oiartzun are designed as circular loops, allowing you to start and end at the same point. Examples include the Alto de Agiña – Endara-San Anton Reservoir loop from Oiartzun and the Tunnel on the Vía Verde (EV1) – Bidasoa Dam and Sluice Gates loop from Bera, providing convenient options for exploration.

What do other gravel bikers enjoy the most about gravel biking in Oiartzun?

The komoot community highly rates the gravel biking experience in Oiartzun, with an average score of 4.4 stars. Reviewers often praise the region's stunning natural beauty, the challenging yet rewarding terrain, and the opportunity to explore historical sites like the Arditurri Greenway away from traffic. The diverse landscapes, from mountains to river valleys, are frequently highlighted as a major draw.

Are there any easier no-traffic gravel routes for beginners in Oiartzun?

While many of Oiartzun's gravel routes are rated as difficult due to significant elevation, the Arditurri Greenway offers a generally flatter and more accessible option for beginners or those seeking a less strenuous ride. This dedicated path provides a smooth surface and a scenic journey through history, connecting to other cycle paths for extended, gentler rides.

Is it easy to find parking near the start of no-traffic gravel trails in Oiartzun?

Oiartzun and its surrounding towns, such as Ventas de Irún, Hendaia, and Pasaia, typically offer parking options that can serve as starting points for gravel bike tours. For routes like the Bidassoa Railway Tunnels – Lantxurda Tunnel loop, starting from Ventas de Irún, you'll generally find suitable parking facilities to begin your adventure.

Can I reach these no-traffic gravel trails using public transport?

Oiartzun and nearby towns are generally well-connected by public transport, including bus services, which can help you access various starting points for gravel trails. The Arditurri Greenway, for example, is easily accessible and connects to other cycle paths leading to towns like Errenteria and San Sebastian, which have good public transport links. It's advisable to check local transport schedules and bike carriage policies beforehand.

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