4.8
(11)
153
riders
10
rides
Gravel biking around Asteasu offers challenging routes through varied terrain. The region is characterized by significant elevation changes, with routes featuring coastal sections, river valleys, and historical greenways. Riders can expect a mix of paved and unpaved surfaces, often traversing dense woodlands and open landscapes. The area provides a robust environment for experienced gravel bikers seeking demanding trails.
Last updated: July 17, 2026
4.5
(6)
45
riders
54.5km
04:13
1,020m
1,000m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.7
(3)
55
riders
50.2km
03:01
640m
640m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5.0
(1)
12
riders
95.6km
06:24
1,670m
1,670m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
9
riders
110km
07:05
1,760m
1,760m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
7
riders
59.4km
04:49
1,380m
1,380m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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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.
0
0
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.
0
0
climb with 3 different slopes from Leitza about 6km from Goizueta about 15km from Santesteban about 23km
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Lonely coastal road for cycling with a beautiful beach and bars for a break.
0
0
Good views and the cafe is nice for a coffee/beer/snack with a view
2
0
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.
1
0
Beautiful town, with good cycling and walking everywhere, catering with restaurants, between beautiful cliffs by the sea
3
1
The gravel biking routes around Asteasu are primarily designed for experienced riders. All 12 available routes are rated as difficult, featuring significant elevation changes and varied terrain. There are no easy or beginner-friendly options in this specific guide.
The routes around Asteasu are characterized by significant elevation changes, often traversing a mix of paved and unpaved surfaces through dense woodlands and open landscapes. Riders should expect demanding trails that require good fitness and technical skills, with routes like the Santa Cruz Tunnel – Witches' Bridge loop from Andoain-Centro covering nearly 60 miles with substantial climbing.
Gravel biking in Asteasu offers a diverse range of landscapes. You'll encounter extensive coastal views, serene river valleys, and historical greenways. Many routes also pass through dense woodlands and open, rolling terrain, providing a varied and scenic experience.
Yes, several routes around Asteasu are designed as loops. For example, the Plazaola Greenway – Witches' Bridge loop from Andoain-Centro and the Oria River – Andoain loop from Asteasu are excellent circular options, allowing you to start and finish in the same location.
Given the challenging nature of the routes, durations can vary significantly. Shorter difficult routes might take around 4-5 hours, such as the Coastal gravel route from Zarautz to Lekeitio which takes about 4 hours 13 minutes. Longer, more demanding routes like the Santa Cruz Tunnel – Witches' Bridge loop from Tolosa can take over 8 hours to complete.
Many routes incorporate historical and natural points of interest. You might pass by the historic Witches' Bridge, explore the charming Orio Old Town and Harbor, or enjoy views of Zarautz Beach. Some trails also lead near the Eraku Sketa Mine Ruins, offering a glimpse into the region's past.
Yes, the region's varied terrain includes several spots with excellent views. Routes that feature coastal sections, such as the Coastal gravel route from Zarautz to Lekeitio, offer extensive sea vistas. Additionally, trails that climb towards summits like Uzturre Summit or Adarra Summit provide panoramic views of the surrounding landscape.
The best time for gravel biking in Asteasu is generally during the spring and autumn months when the weather is milder and more stable. Summers can be warm, especially on exposed sections, while winters might bring more challenging conditions, including rain and potentially muddy trails, particularly in the forested areas and river valleys.
Asteasu and nearby towns like Andoain and Tolosa are generally well-connected by local and regional bus services, and some have train stations. It's advisable to check local transport schedules and policies regarding bicycle carriage in advance, especially for longer routes or those starting further afield.
Parking is typically available in the towns and villages that serve as starting points for these routes, such as Asteasu itself, Andoain, Zarautz, or Tolosa. Look for public parking areas, but always check local regulations and signage. Some trailheads might have limited parking, so arriving early is recommended, especially on weekends.
The area is highly rated by the komoot community, with an average score of 4.8 stars. Reviewers often praise the challenging and varied terrain, the stunning coastal views, and the unique experience of riding through historical greenways and dense woodlands. The sense of adventure on these demanding routes is frequently highlighted.


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