Mountain passes around Oñati are situated in the rugged mountainous landscape of the Basque Country. This region offers diverse terrain for outdoor activities, including cycling and hiking. The area is known for its extensive karst phenomena and features a rich historical and cultural heritage. Oñati is located at the foot of the Aizkorri-Aratz Natural Park, which contains some of the highest summits in the Cantabrian-Mediterranean watershed.
Last updated: August 25, 2026
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Hiking around Oñati
Road Cycling Routes around Oñati
Running Trails around Oñati
MTB Trails around Oñati
Cycling around Oñati

Mountain Hikes around Oñati
Good starting point to climb Egoarbitza.
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This impressive hill has a long pastoral tradition. In its meadows you can see sheep and cows grazing among the limestone cliffs with a spectacular background view of valleys and mountains.
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The Karabieta pass, located at a height of 565 meters, is one of the most recognized climbs in the area. The climb is not too long and its slope is quite progressive. A slightly demanding climb, but with wonderful landscapes.
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It is a typical Basque port, short but with hard ramps. There are barely 6 kilometers to the coronation of the A-2620 that connects the town of Aramaio/Ibarra with Legutiano/Legutio.
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Udana from Oñati is a climb in the Basque Country region. It has a length of 6.9 kilometers and an ascent of 270 vertical meters with a slope of 3.9% on average. The top of the ascent is located at 515 meters above sea level.
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The top of Karabieta is a beautiful mountain pass located at 565 meters high.
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Ipuztiko Arriaga is a mountain pass with a gravel track area to enjoy the views towards Urkiola. An incredible place with a unique viewpoint. And, in addition, it is very close to Kasatxo Txabola (a typical borda/cabin style of the area)!
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Pass of the Karabieta at 565 meters. One of the many climbs in the area. Not too heavy, not too long and easy to ride.
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The region around Oñati offers several popular mountain passes. For cyclists, Udana Pass Ascent is a well-known climb, stretching 6.9 kilometers with an average slope of 3.9%. Another recognized climb is Alto de Karabieta, noted for its progressive ascent and wonderful landscapes. For those seeking a challenging, short climb, Krutzeta Pass is a typical Basque port with hard ramps.
The mountain passes around Oñati are set within the rugged and beautiful mountainous landscape of the Basque Country. You can expect breathtaking views of green mountains, valleys, and limestone cliffs. For instance, Collado de Biozkorna offers spectacular background views of valleys and mountains, with meadows where sheep and cows graze among limestone cliffs. The broader Aizkorri-Aratz Natural Park, at the foot of Oñati, is known for its extensive karst phenomena.
Yes, several passes provide excellent viewpoints. Ipiztiko Arriaga Pass is distinguished by its gravel track area, offering incredible views towards Urkiola and a unique viewpoint near Kasatxo Txabola. Alto de Karabieta also provides wonderful landscapes during its ascent, reaching an elevation of 565 meters.
Beyond exploring the passes themselves, the area around Oñati offers diverse outdoor activities. You can find numerous routes for mountain biking, such as the challenging "Enduro Trail – Urkulu Dam loop from Oñati" or the moderate "Jaturabe Dam Waterfall – Jaturabe River loop from Oñati." For more options, explore the MTB Trails around Oñati guide. There are also many running and hiking trails available.
Absolutely. The Aizkorri-Aratz Natural Park, which encompasses many of these passes, is a major draw for hikers. You can find trails like "Orkatzategi through the Eye of Aitzulo" or "The Hidden Path (PR-GI 3005)" which are both moderate. For a comprehensive list of hiking routes, refer to the Hiking around Oñati guide.
The region's mountainous terrain is generally best enjoyed during spring, summer, and early autumn when the weather is milder and trails are clear. These seasons offer ideal conditions for cycling, hiking, and enjoying the scenic beauty. Winter conditions can make some passes more challenging or inaccessible due to snow and ice, especially at higher elevations within the Aizkorri-Aratz Natural Park.
Yes, the region combines natural beauty with rich cultural heritage. The Aizkorri-Aratz Natural Park's "main entrance" is near the Sanctuary of Arantzazu, a significant spiritual site accessible from Oñati. Additionally, historical routes like the Ignatian Way pass through the area, adding cultural depth to your exploration.
The mountain passes around Oñati cater to various activity levels. Some, like Alto de Karabieta, are described as 'slightly demanding but with wonderful landscapes' due to their progressive slopes. Others, such as Krutzeta Pass, are known for their short length but challenging ramps, making them more suitable for experienced cyclists. Many trails associated with the passes are rated as intermediate.
Visitors frequently appreciate the breathtaking scenic beauty, with views of green mountains, valleys, and limestone cliffs. The varied terrain for both road cycling and hiking, from moderate climbs to more demanding routes, is also a highlight. The unique features, such as Ipiztiko Arriaga Pass's gravel track for views or the pastoral tradition with grazing sheep and cows at Collado de Biozkorna, add to the distinctive charm.
Yes, the area provides several running trails. For example, you can find routes like "The hidden path from Aránzazu — circular through the Aizkorri-Aratz Natural Park" or the longer "Arantzazu Sanctuary – Aizkorri Summit (1,523 m) loop." More options are detailed in the Running Trails around Oñati guide.


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