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France
Occitania
Saint-Girons

Bonac-Irazein

The best gravel rides around Bonac-Irazein

4.5

(2)

16

riders

4

rides

Gravel biking around Bonac-Irazein offers routes through the rugged mountainous terrain of the Pyrénées Ariégeoises Regional Natural Park. The landscape features prominent mountain passes, dense forests, and valleys, providing varied elevations and sustained climbs. The area's topography includes both paved and unpaved surfaces, catering to different skill levels.

Best gravel bike trails around Bonac-Irazein

  • The most popular gravel bike trail is Saint-Lary – Portet-d'Aspet pass loop from Castillon-en-Couserans, a 29.3 miles (47.1 km) trail that takes 4 hours 11…

Last updated: May 13, 2026

4.5

(2)

12

riders

#1.

Carretera de Bonabé – Montgarri loop from 8.1 Aparcament d'Audeth… Parking Beret

40.0km

03:28

640m

640m

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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Hard

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard
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Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard

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Popular around Bonac-Irazein

Tour du Biros – 4 days in the heart of the Pyrenees

Road Cycling Routes around Bonac-Irazein

Hiking around Bonac-Irazein

Cycling around Bonac-Irazein

MTB Trails around Bonac-Irazein

Running Trails around Bonac-Irazein

Other adventures around Bonac-Irazein

Tour du Biros – 4 days in the heart of the Pyrenees

Hiking Collection by

Fred Urrutia

Tips from the Community

Alexcasaserra
July 20, 2025, Refugio y Santuario de Montgarri

Our Lady of Montgarri

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A beautiful, sustained climb to the Col de la Core, through the Larrech and Grande Rédille forests. The Col du Larrech offers a superb panorama of the Valier and the Bethmale Valley. The final kilometer is on the departmental road that leads to La Core.

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The Amics de Montgarri Refuge has an incredible history. Apart from its two buildings, the 12th century temple and the 16th century building, this place has been used as a place of lodging for shepherds and smugglers. You can book up to 35 places in its different room options with shared shower and toilet services. It also has a catering service and rental and charging for ebikes. In winter you can book snowmobile or snowshoe adventures.

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It is an exceptional, magnificent place. We did the loop from Baqueira and returned via the Bonaigua pass. It was really great

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Directly on the river Noguera Pallaresa on the route to Vielha

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feinradfahrer
September 17, 2024, Pla de Beret

A great post through a high valley with beautiful views. Most of the time you are alone here. There are a few technical passages in between and you should have at least 40mm tires

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Nice stop after the effort...

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In Alas, the Guinguette, very friendly welcome, we were able to eat a plate of cold meats/cheese and raw vegetables!.

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Frequently Asked Questions

How many gravel bike trails are available around Bonac-Irazein?

There are 6 gravel bike trails available around Bonac-Irazein. These routes offer a mix of experiences through the rugged mountainous terrain of the Pyrénées Ariégeoises Regional Natural Park.

What kind of terrain can I expect on gravel bike trails in Bonac-Irazein?

The terrain around Bonac-Irazein is characterized by rugged mountains, dense forests, and varied valleys. You'll encounter both paved and unpaved surfaces, including challenging sustained climbs and descents, particularly around prominent features like the Col de la Core. Some routes also incorporate former railway lines, known as Voie Decauville, which add a unique historical element to the ride.

Are there any easy gravel bike trails suitable for beginners in Bonac-Irazein?

While the region is known for its challenging mountain passes, there is one moderate gravel bike trail available: Moulis – Pont Vieux de Saint-Girons loop from Argein. This route offers varied terrain and is a good option if you're looking for a less strenuous ride compared to the more difficult options.

Can I find challenging gravel bike routes in Bonac-Irazein?

Yes, Bonac-Irazein is well-suited for challenging gravel biking. Most of the routes in the area are rated as difficult, featuring significant elevation gains and demanding climbs through mountain passes. For instance, the Carretera de Bonabé – Montgarri loop from 8.1 Aparcament d'Audeth… Parking Beret offers challenging climbs and panoramic views.

Are there any circular gravel bike routes in the area?

Yes, many of the gravel bike routes in Bonac-Irazein are designed as loops, allowing you to start and finish at the same point. Examples include the Castillon-en-Couserans – Church of Castillon loop from Castillon-en-Couserans and the Church of Castillon – Castillon-en-Couserans loop from Arrout.

What interesting landmarks or natural features can I see along the gravel bike trails?

Gravel biking in Bonac-Irazein offers access to stunning natural features and historical sites. You can encounter prominent mountain passes like the Portet-d'Aspet pass and the Core Pass, which provide superb panoramic views. The region also features beautiful lakes such as Lac de Bethmale and Étang d'Araing, and routes often pass through lush forests and past remnants of old mining operations, adding a cultural dimension to your ride.

Is Bonac-Irazein suitable for family-friendly gravel biking?

The mountainous and often challenging terrain of Bonac-Irazein means that most gravel routes are geared towards experienced riders. However, if your family is comfortable with moderate climbs and varied surfaces, the Moulis – Pont Vieux de Saint-Girons loop from Argein could be a suitable option, offering a less demanding experience.

What is the best season for gravel biking in Bonac-Irazein?

The Pyrénées region generally offers the best conditions for gravel biking from late spring through early autumn. During these months, the weather is typically more stable, and mountain passes are clear of snow, providing optimal riding conditions and access to the full network of trails. Always check local weather forecasts before heading out.

Where can I find accommodation near the gravel bike trails in Bonac-Irazein?

Bonac-Irazein and the surrounding Biros valley offer various accommodation options, including guesthouses and small hotels. For specific mountain hut experiences, you might consider places like the Valier House or Les Estagnous Refuge, which are popular with hikers and can be accessed from some routes.

What do other gravel bikers enjoy the most about gravel biking in Bonac-Irazein?

The komoot community highly rates the gravel biking experience in Bonac-Irazein, with an average score of 4.5 stars. Riders often praise the challenging nature of the routes, the stunning panoramic views from mountain passes like the Col de la Core, and the opportunity to explore diverse landscapes, from dense forests to historical mining paths.

Are there any permits required for gravel biking in the Pyrénées Ariégeoises Regional Natural Park?

Generally, no specific permits are required for gravel biking on established trails within the Pyrénées Ariégeoises Regional Natural Park. However, it's always advisable to respect local regulations, especially concerning protected areas, private land, and any specific rules posted at trailheads. For more information on the park, you can visit tourisme-couserans-pyrenees.com.

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