4.4
(72)
1,327
riders
89
rides
Mountain biking around Altzaga, located in the mountainous Goierri region of Gipuzkoa, Basque Country, offers diverse terrain for outdoor activities. The area is characterized by large forests, expansive meadows, and varied elevations. Riders can experience panoramic views of iconic mountains such as Txindoki, Sierra de Aralar, and Sierra de Aizkorri. This natural setting provides a rich variety of mountain bike trails suitable for different skill levels.
Last updated: June 20, 2026
5.0
(1)
25
riders
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
4.5
(8)
21
riders
29.8km
02:15
510m
510m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Sign up for free
3.0
(1)
21
riders
29.3km
02:25
610m
610m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
5.0
(2)
20
riders
25.1km
02:19
650m
650m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
4.0
(1)
19
riders
34.8km
02:28
480m
480m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
Get access to more routes and recommendations from other explorers.
Sign up for free
Already have an account?
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Start today with a free account
Your next adventure awaits.
Login or Signup
The Ormaiztegi Viaduct (inaugurated on August 15, 1864) is the town's most emblematic symbol. Designed by engineer Alexander Lavalley, a predecessor of Gustave Eiffel, it stands in a beautiful landscape overlooking the Eztanda River. It is the most important structure on the Madrid-Paris railway line, spanning 289 meters in length and 34 meters in height. Its 18,000 tons are supported by four pillars. The double track was installed in 1912 and electrified in 1928. It is currently disused and forms part of the Basque Country's cultural heritage.
0
0
Amazing highlands, small villages and farms, loads of routes to discover up and down the hills! Perfect roads!
3
1
The historic center of Ordizia is very well preserved and has several buildings that have earned it the declaration of a historical-monumental complex. In addition, its market of typical products has been celebrated since the 11th-12th centuries and its spring Idiazabal cheese market is highly recognized.
2
0
descents in very good condition to avoid problems
0
0
In some sections the roads are very closed by the undergrowth
0
0
very quiet place to go for a bike ride
0
0
There are over 80 mountain bike trails around Altzaga, offering a wide variety of options for different skill levels. The region is known for its diverse terrain within the mountainous Goierri area.
The mountain bike trails around Altzaga and the broader Goierri region cater to all levels. You'll find a mix of easy (S0-S1), moderate, and difficult (S3-S6) routes. There are 3 easy routes, 39 moderate routes, and 44 difficult routes available, ensuring options for beginners to advanced riders.
Yes, the Goierri region, which includes Altzaga, is suitable for families and beginners. While many routes are moderate or difficult, there are 3 easy mountain bike trails available. These routes typically feature less challenging terrain, allowing for a pleasant experience for all ages.
Mountain biking around Altzaga offers stunning natural splendor. You'll ride through large forests and expansive meadows, with panoramic views of iconic mountains like Txindoki, the Sierra de Aralar, and the Sierra de Aizkorri. The terrain often includes engaging natural obstacles like roots and trees, immersing you in the natural environment.
Yes, many of the mountain bike trails around Altzaga are designed as loops. For example, the Ordizia – Mandubia Summit loop from Ordizia is a popular moderate option, and the Ordizia – Olaberria loop from Ordizia also offers a great circular ride through the natural landscapes.
While mountain biking, you can explore several interesting attractions. Highlights include the Igartza Monumental Complex, the serene Lareo Reservoir, and the impressive Txindoki (1,346 m) summit. You might also encounter the Amezketa Stream Waterfall, adding a scenic element to your ride.
The mountain bike trails around Altzaga are highly rated by the komoot community, with an average score of 4.6 stars from over 70 reviews. Riders frequently praise the diverse terrain, the stunning views of the Aralar and Aizkorri mountain ranges, and the immersive experience of riding through large forests and open meadows.
While Altzaga itself is a small village, the broader Goierri region has connections. For specific trailheads, it's advisable to check local bus schedules or consider starting points in larger nearby towns like Ordizia, which may have better public transport links to the surrounding areas where many trails begin.
The Aizkorri-Aratz and Aralar Natural Parks offer vast natural expanses for mountain biking. While specific named trails directly within Altzaga are not detailed, when riding in natural parks, it's generally important to stay on marked trails, respect wildlife, and follow any local signage regarding protected areas or specific regulations. Permits are not typically required for general mountain biking on established trails.
The Goierri region, including Altzaga, offers good mountain biking conditions for much of the year. Spring and autumn generally provide pleasant temperatures and vibrant scenery. Summer can also be enjoyable, especially in the forested areas, though some higher elevation routes might be warmer. Winter riding is possible but can be affected by rain or snow at higher altitudes.
Absolutely. For experienced riders seeking a challenge, there are 44 difficult routes around Altzaga. A notable option is the Atxurbide Summit (787 m) – Atxartiko Gaña Summit (735 m) loop from Ordizia, which is a difficult 38.2 km trail featuring significant elevation gain and demanding terrain across two summits.
Parking is generally available in and around the villages that serve as starting points for many trails in the Goierri region. For routes originating from towns like Ordizia, you'll typically find designated parking areas. It's always a good idea to check the specific trailhead information on komoot for details on parking availability.
Altzaga itself is a small village, but the wider Goierri region offers amenities. You can find cafes and pubs in nearby towns like Ordizia, which is a common starting point for many routes. These establishments provide opportunities for refreshments and meals before or after your ride.


Browse the best MTB trails in other regions.