4.7
(7)
102
riders
5
rides
No traffic gravel bike trails around Gaztelu are set within the lush landscapes of the Tolosaldea region in Gipuzkoa, Spain. The area is characterized by green mountains, expansive meadows, and dense forests, providing a verdant environment for outdoor exploration. Gravel biking routes here often feature varied terrain, including both well-maintained unpaved segments and some paved surfaces, offering a blend of challenge and scenic beauty. This rural setting, with its traditional architecture and natural features, makes for engaging gravel cycling experiences.
…Last updated: July 10, 2026
4.7
(3)
51
riders
45.4km
02:42
570m
570m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(2)
18
riders
31.1km
01:58
440m
440m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.5
(2)
12
riders
61.7km
04:24
1,210m
1,210m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
10
riders
110km
07:04
1,760m
1,760m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
74.7km
04:47
1,170m
1,170m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Gaztelu
As of May 24, 2026, the tunnel is closed. The alternative route is by road to the village of Leitza. From there, you take the greenway again.
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A bar with a view and good food, a good place to stop. Closed Mondays.
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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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The 2700m tunnel is impressive and seems to never end. Advice: Bring clothes at least when passing through this tunnel as it is cool. Otherwise there is automatic lighting.
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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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There are currently 6 dedicated no-traffic gravel bike routes around Gaztelu featured in this guide. These routes offer a fantastic way to explore the region's quiet landscapes away from vehicle traffic.
The routes around Gaztelu offer a varied terrain, characteristic of the Basque Country. You'll encounter lush green mountains and meadows, often on well-maintained unpaved surfaces, including sections of the famous Plazaola Greenway. Expect a mix of gravel paths, forest tracks, and some rolling hills, providing both scenic beauty and engaging rides.
Yes, several routes offer a significant challenge. For instance, the Cantina del Plazaola – Plazaola Greenway loop from Leitza is rated 'difficult' with over 1200 meters of elevation gain, providing a demanding yet rewarding experience. Another challenging option is the Santa Cruz Tunnel – Witches' Bridge loop from Tolosa, which covers over 100 km and features substantial climbing.
While many routes in this guide are rated 'difficult', the Plazaola Greenway – Santa Cruz Tunnel loop from Leitza is a 'moderate' option, making it more accessible for those newer to gravel biking or looking for a less strenuous ride. It still offers beautiful scenery without the most intense climbs.
The region is rich in natural beauty. You can expect panoramic views from various points, especially after climbs. Highlights include the serene Leitzaran River Valley and the impressive Amezketa Stream Waterfall. The lush beech and oak forests provide shaded and scenic sections throughout your ride.
Absolutely. Many routes incorporate sections of the historic Plazaola Greenway, which is a converted old railway line. You might encounter fascinating structures like the Witches' Bridge and the Bartolo Tunnel, which are remnants of the old railway. The rural essence of Gipuzkoa, with its traditional farmhouses, also adds to the cultural experience.
Gaztelu and the wider Basque Country benefit from a mild climate, making it suitable for gravel biking for much of the year. The region is continuously verdant due to ample rainfall. Spring and autumn generally offer the most pleasant temperatures and vibrant landscapes, though summer can also be enjoyable, especially on shaded forest routes. Winter rides are possible, but be prepared for cooler, potentially wetter conditions.
Yes, many of the routes are designed as loops, allowing you to start and finish in the same location. For example, the Witches' Bridge – Plazaola Greenway loop from Leitza is a popular circular option, offering a diverse ride back to your starting point.
The area is highly rated by the komoot community, with an average score of 4.8 stars. Reviewers often praise the serene, traffic-free nature of the trails, the stunning green landscapes, and the varied terrain that keeps rides engaging. The opportunity to explore the historic Greenways is also frequently highlighted as a major draw.
While the routes themselves focus on natural, traffic-free areas, many start or pass through small towns and villages like Leitza or Tolosa, where you can find cafes and local establishments to refuel. It's always a good idea to check the route details and plan your stops in advance, especially on longer rides, as amenities might be sparse on the more remote sections.
Yes, for routes starting in towns like Leitza or Asteasu, you can typically find public parking options. As these routes are designed to be traffic-free, the starting points are usually accessible by car, allowing you to park and begin your adventure directly on the gravel trails. Always check local signage for parking regulations.

