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Routes
Mountain biking trails
France
Occitania
Millau
Saint-Izaire

Saint-Izaire and Rougier Loop

Moderate

2

riders

Saint-Izaire and Rougier Loop

03:03

31.4km

830m

Mountain biking

This moderate 19.5-mile mountain biking loop in Parc naturel régional des Grands Causses explores red sandstone valleys and Saint-Izaire vil

Last updated: February 26, 2026

Tips

Includes a segment in which cycling is not permitted

After 222 m for 146 m

Waypoints

A

Start point

Parking

Get Directions

1

222 m

Château de Saint-Izaire

Highlight • Castle

Imposing mass of red sandstone which reminds us of the proximity of the Rougiers de Camarès. It can be visited and is classified as a Historic Monument. A small path, …

Translated by Google •

Tip by

2

5.45 km

Sentier des rougiers

Highlight • Other

Small trail in red earth, in the heights of Saint-Izaire and reminiscent of the Rougiers de Camarès, which are not very far.

Translated by Google •

Tip by

3

26.1 km

Bridge over the Tarn

Highlight • Other

View under the arcaded bridge, at the confluence of the Tarn and the Dourdou, on the Saint-Affricain greenway which avoids the departmental road.

Translated by Google •

Tip by

B

31.4 km

End point

Parking

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Way Types & Surfaces

Way Types

17.9 km

9.12 km

2.79 km

1.24 km

455 m

Surfaces

18.7 km

8.53 km

3.41 km

805 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (640 m)

Lowest point (250 m)

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Weather

Powered by Foreca

Wednesday 27 May

33°C

17°C

0 %

Additional weather tips

Max wind speed: 16.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

How long does it typically take to complete this mountain biking loop?

The loop is approximately 31.4 km long with an elevation gain of 825 meters. On average, it takes about 3 hours of riding time to complete. However, this can vary depending on your fitness level, speed, and how often you stop to enjoy the scenery or visit points of interest.

Where is the best place to park and start this mountain bike trail?

The village of Saint-Izaire is the most convenient starting point for this loop. You can typically find parking within or near the village, which is built in an amphitheater around a medieval episcopal castle, making it a great place to begin and end your ride.

Is this mountain bike trail suitable for beginners?

While the trail is rated as 'moderate' and requires a good level of physical fitness due to its length and significant elevation gain, it is generally considered accessible for mountain bikers of varying skill levels. Beginners with some experience and good stamina should be able to manage it, but it's not a casual ride.

What is the terrain like on the Saint-Izaire, vallée du Gos et vallée du Dourdou loop?

The terrain is diverse, traversing a hilly and enchanting landscape characterized by red sandstone. You'll ride through the valleys of the Dourdou, the Tarn, and the Gos, encountering riverbanks, undergrowth, farms, and hamlets. The red hue of the local sandstone is a prominent feature throughout the ride.

What are the best times of year to mountain bike this route?

Spring and autumn are generally the best seasons for mountain biking this route. The weather is typically milder, and the landscapes are vibrant. Summer can be quite hot, while winter might bring colder temperatures and potentially muddy conditions.

Are there any notable landmarks or viewpoints along the way?

Yes, the route offers several points of interest. You'll pass by the historic village of Saint-Izaire with its medieval streets and the impressive Château de Saint-Izaire. Other highlights include the Sentier des rougiers and a Bridge over the Tarn. There are also beautiful panoramic viewpoints overlooking the Dourdou, Tarn, and Gos valleys.

Does this trail intersect with other well-known paths?

Yes, the route intersects with several other paths. Notably, it covers significant sections of the Voie Verte du Saint-Affriccain (18%) and the Chemin Descombes (9%). You'll also encounter smaller portions of trails like the Chemin de l’Amitié and the Sentier des Sources.

Is the Saint-Izaire mountain bike loop dog-friendly?

While dogs are generally permitted on trails within the Parc naturel régional des Grands Causses, it's always recommended to keep them on a leash, especially when passing through agricultural areas or near wildlife. Please ensure your dog is well-behaved and that you clean up after them.

Do I need a permit or pay an entrance fee to access this trail in the Parc naturel régional des Grands Causses?

No, you do not need a specific permit or to pay an entrance fee to access this mountain bike trail within the Parc naturel régional des Grands Causses. Regional Natural Parks in France are generally free to access, but visitors are expected to respect local regulations, protect the environment, and stay on marked paths.

Are there any cafes or restaurants near the trail for refreshments?

The village of Saint-Izaire, where the loop typically starts and ends, is likely to have options for refreshments or a meal. It's a charming village with historical significance, so you can expect some local establishments to cater to visitors.

What should I pack for mountain biking this trail?

Given the moderate difficulty and length, you should pack plenty of water, snacks, a basic bike repair kit (including a spare tube and pump), appropriate cycling attire, a helmet, and sun protection. A first-aid kit and a charged phone are also highly recommended.

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