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France
Occitania
Foix

Alzen

The best road cycling routes around Alzen

4.6

(48)

1,068

riders

42

rides

Road cycling routes around Alzen traverse a landscape characterized by rolling hills and significant elevation changes, indicative of its position within a pre-Pyrenean environment. The region features numerous passes and valleys, offering varied terrain for road cyclists. Routes often include challenging ascents to cols and descents through rural areas.

Best road cycling routes around Alzen

  • The most popular road cycling route is Marrous Pass loop from La Bastide-de-Sérou, a 24.9 miles (40.1 km) trail that takes 2 hours 15…

Last updated: July 5, 2026

4.8

(9)

68

riders

#1.

Col de Légrillou (938 m) – Jouels Pass loop from Le Bosc

44.2km

02:36

1,090m

1,090m

Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

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Hard

5.0

(2)

26

riders

Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.

Moderate
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Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

Moderate

Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

Hard

Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.

Moderate
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Popular around Alzen

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Tips from the Community

Siro Arias Valdés - Testadicorsa
June 29, 2026, Col de Péguère

I climbed it from its easier side, the one that starts from Foix and stretches for 28 kms, crossing the Col de Marrous. It's a steady climb, with a few tough kilometers, and very pleasant. It's the side used by the Tour de France to descend it. The best thing about the Mur de Peguère are the views from its summit.

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I can only speak about my experience descending it from the south side, the one that starts in the village of Biert. It's simply a great pass, with a very tough final section, very similar to its close brother Mur de Peguère. With hardly any traffic, it has the appeal that the road is very narrow and very winding, which helps mentally.

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cgdscc
June 14, 2026, Col de Péguère

The real Wall :)

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Very surprising, quite and beautiful area, didn't see cars in july for maaaany km, just cyclists.

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Amazing, but probably better uphill. Lot of green stuff in the surface, even in summer, it was scary at times to go downhill. But definitely a MUST!!!!

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Bettina
June 23, 2025, Foix

A very beautiful little town with a certain charm. If you're in the area, you should definitely stop by.

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Be careful, since yesterday, June 19th, the descent to Rivèrenert has been freshly graveled and dangerous. I had a rear puncture due to small, sharp gravel sticking to the tire when braking. So, don't go crazy on this descent, friends.

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Because around 12pm and >31°C, the climb from Biert is mostly in the shade, and this pass generally ends a series of small linked passes (like Portech, Catchaudégué or La Core, Saraillé, etc.). And the challenge of the last 3 km is worth experiencing to strengthen your mental strength. Get to your pedals

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Frequently Asked Questions

How many road cycling routes are available around Alzen?

Alzen offers a diverse network of over 40 road cycling routes. These routes cater to various skill levels, with options ranging from moderate loops to more challenging climbs through the pre-Pyrenean landscape.

Are there any easy road cycling routes suitable for beginners in Alzen?

While Alzen's terrain is generally characterized by rolling hills and elevation changes, there is at least one easy road cycling route available. Most routes are classified as moderate, offering a good balance for those with some cycling experience. For a moderate option that is not overly long, consider the Marrous Pass loop from La Bastide-de-Sérou.

What are the most challenging road cycling routes in Alzen?

For experienced road cyclists seeking a challenge, Alzen offers several difficult routes. One notable option is the Col de Péguère – Col de la Crouzette (1245 m) loop from La Bastide-de-Sérou, which features significant elevation gains, including ascents to mountain passes like Col de Péguère and Col de la Crouzette.

What kind of terrain can I expect on road cycling routes around Alzen?

Road cycling routes around Alzen traverse a landscape of rolling hills and significant elevation changes, typical of a pre-Pyrenean environment. You'll encounter numerous passes and valleys, offering varied terrain with challenging ascents to cols and descents through rural areas. Some paths also lead near natural formations like caves.

Are there any circular road cycling routes in Alzen?

Yes, all the featured road cycling routes around Alzen are designed as loops, allowing you to start and finish at the same point. This makes planning your ride convenient, as you won't need to arrange for return transport. Examples include the Grotte du Mas-d'Azil – L'Épicerie d'Ici loop from La Bastide-de-Sérou and the Foix – Foix Castle loop from La Bastide-de-Sérou.

What are some scenic viewpoints or landmarks to see along the road cycling routes?

The region around Alzen is rich in natural beauty and historical sites. Many routes offer scenic views from mountain passes. You can also explore notable landmarks such as the Col de la Crouzette (1245 m), Péguère Pass, and Col de Port. Some routes also pass by the impressive Grotte du Mas-d'Azil.

What do other road cyclists say about the routes in Alzen?

The road cycling routes in Alzen are highly regarded by the komoot community, holding an average rating of 4.1 stars from over 40 reviews. More than 1,000 road cyclists have used komoot to explore the varied terrain, often praising the challenging ascents and scenic descents through the valleys.

Where are common starting points for road cycling routes in Alzen?

Many of the road cycling routes in the Alzen area, including some of the most popular ones, typically start from La Bastide-de-Sérou. This central location provides convenient access to various loops that explore the surrounding passes and valleys.

Are there any routes that pass by historical or natural attractions?

Yes, several routes incorporate local attractions. For instance, the Grotte du Mas-d'Azil – L'Épicerie d'Ici loop from La Bastide-de-Sérou and the Grotte du Mas-d'Azil – Portel Pass loop from La Bastide-de-Sérou both pass by the famous Grotte du Mas-d'Azil. Additionally, the Foix – Foix Castle loop from La Bastide-de-Sérou takes you past the historic Foix Castle.

What is the typical elevation gain on road cycling routes in Alzen?

Given Alzen's pre-Pyrenean setting, road cycling routes often feature significant elevation gains. For example, a moderate route like the Marrous Pass loop from La Bastide-de-Sérou involves an ascent of over 880 meters, while more difficult routes can exceed 1200 meters of climbing.

Can I find routes of different distances around Alzen?

Yes, the routes around Alzen vary in length to suit different preferences. You can find routes ranging from approximately 40 kilometers, such as the Marrous Pass loop, to over 60 kilometers, like the Grotte du Mas-d'Azil – Portel Pass loop, allowing you to choose a distance that matches your endurance.

Most popular routes around Alzen

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