4.3
(23)
251
riders
37
rides
Mountain biking around Zalduondo offers access to diverse terrain, primarily due to its location near the Aizkorri-Aratz Natural Park and the Sierra de Entzia. The region features imposing limestone mountains, extensive beech forests, and spectacular karstic formations including crests and sinkholes. Riders can explore high plateaus with sharp limestone crests and vast pasturelands, often encountering prehistoric megalithic sites. This varied landscape provides a range of mountain bike trails suitable for different skill levels.
Last updated: July 17, 2026
5.0
(2)
18
riders
44.5km
04:19
1,230m
1,230m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.
5.0
(1)
20
riders
24.8km
02:25
780m
780m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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13
riders
30.4km
03:22
1,040m
1,040m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.
16
riders
77.5km
08:39
2,650m
2,650m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
3.0
(2)
15
riders
44.5km
04:24
990m
990m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
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You can climb on foot, gravel and MTB.
0
0
A place to remember, a joy to visit.
4
0
Very nice views...be careful of the cold wind and the fog
0
0
Beautiful place, I recommend doing that route.
2
0
It is an impressive spring from the aquifers that permeate the limestone rock. A dam has been built to channel part of the water through a ditch. A beautiful waterfall jumps from the dam.
2
0
The cover photo of colleague Javier Colmenero is impressive.
3
0
Section from Zalduondo along the Camino de Santiago or medieval from Bayonne to Burgos, very hard due to the climbs if you go with panniers, but spectacular
0
0
Nice place with a walkway.
3
0
There are 38 mountain bike trails around Zalduondo, offering a diverse range of options for different skill levels. This includes 1 easy route, 19 moderate routes, and 18 difficult routes.
The terrain around Zalduondo is varied, characterized by imposing limestone mountains, extensive beech forests, and spectacular karstic formations. You'll find high plateaus with sharp limestone crests, vast pasturelands, and trails that often pass by prehistoric megalithic sites. Routes can range from paved sections to challenging unpaved segments with significant ascents.
Yes, Zalduondo offers mountain bike trails suitable for beginners and families. While many routes are moderate to difficult, there is at least one easy route available. These easier options typically feature minimal elevation gain and may include paved surfaces, making them ideal for a more relaxed ride.
Absolutely. For experienced riders seeking a challenge, Zalduondo offers 18 difficult mountain bike trails. These routes often involve significant elevation gains, sometimes over 1,500 feet, and feature unpaved, technical segments that may require advanced riding skills. An example is the Burgamendi Summit – Burgamendi loop from Zalduondo, which covers 27.6 miles with over 1,200 meters of ascent.
Yes, many mountain bike routes around Zalduondo are designed as loops, allowing you to start and finish in the same location. Examples include the challenging Burgamendi Summit – Burgamendi loop from Zalduondo and the moderate Peruaitz Summit – Agineta Forest Trail loop from Araia.
The region is rich in natural beauty and historical landmarks. You can explore the Aizkorri-Aratz Natural Park with its impressive limestone mountains and beech forests, or the Sierra de Entzia with its high plateaus and megalithic monuments. Notable attractions include the historic San Adrián Tunnel, the Aizkorri Summit, and the Arantzazu Sanctuary.
Yes, the area around Zalduondo features several beautiful waterfalls and water sources. You might encounter the Tobería Waterfalls, the Source of the Zirauntza River, or the Andoin Waterfall on your rides.
Yes, Zalduondo serves as a convenient starting point for many trails, and parking is generally available within the town or at trailheads leading into the natural parks. Specific parking information for individual routes can often be found on their respective komoot tour pages.
While Zalduondo is a small town, it is generally accessible by public transport, though options might be limited depending on your starting location. It's advisable to check local bus schedules to Araia or nearby towns, which often serve as gateways to the Aizkorri-Aratz Natural Park and Sierra de Entzia.
Generally, permits are not required for mountain biking on established trails in the Aizkorri-Aratz Natural Park or Sierra de Entzia. However, it's always good practice to respect local regulations and stay on marked paths to protect the natural environment. For specific details or any potential changes, you can consult local tourism information or the park authorities.
Many trails in natural parks like Aizkorri-Aratz and Sierra de Entzia are dog-friendly, especially if dogs are kept on a leash to protect wildlife and livestock. However, it's always recommended to check specific trail regulations or local signage, as some areas might have restrictions, particularly during nesting seasons or in sensitive ecological zones.
The mountain bike trails around Zalduondo are highly rated by the komoot community, with an average score of 4.3 stars from over 20 reviews. More than 250 mountain bikers have explored the varied terrain, often praising the diverse landscapes, from challenging mountain ascents to scenic forest paths and historical sites.


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