Discover the ruins of Saint-Barthélémy Castle

Between farmland and virgin forest, discover the ruins of the Château de Saint-Barthélémy, which overlooks the authentic villages of Durban-sur-Arize and Montseron on the Plantaurel massif. You will admire the most peaceful landscapes: views of the Pyrenees, emerald forests worthy of the greatest fantasy films, and hills stretching as far as the eye can see.

Details

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  • Walking
    Activity: Walking
  • ↔
    Distance: 13.17 km
  • ◔
    Average duration: 5h 10 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 497 m
  • ↘
    Descent: - 500 m

  • ▲
    Highest point: 565 m
  • ▼
    Lowest point: 336 m

Photos

Description of the walk

Meet at Rue de la Mairie, in the car park of the town hall in Durban-sur-Arize, on the D15.

(S/E) Head west, leaving the town hall on your right and turning immediately left at the crossroads onto Chemin de Francou to reach the hamlet of Francou.

(1) Continue straight ahead on Chemin du Lavoir for a little over 100 metres, ignoring all the paths on your right. Turn left down the winding road, leaving the tarmac road after the last house to reach the wash house.

(2) Just after the wash house, take the stony path on the right, climbing towards Montseron, and follow it for 1.1 km. You will cross several paths branching off to the left or right, but continue climbing straight ahead until you reach a tarmac crossroads. Continue straight ahead, passing the cemetery and church on your left.

(3) Take the path on your right just before the cross, leaving the paved road again and passing the first house on your left. Climb for 500 metres and, when you reach the crossroads at the top of the hill, turn right at a right angle, heading north, and descend gently towards the town hall of Montseron, at Le Pleich.

(4) Return to the paved road and turn right for 20 metres, then immediately left behind the first building (town hall). Follow another dirt road that descends between two buildings.
Continue downhill to the hamlet of Lescalé, following the road on your left until you reach another crossroads.

(5) At this crossroads, leave the main road that comes from the left and turns off to your right. Take the dirt track opposite, which climbs steeply towards an isolated house and, after 20 metres, turn right to pass in front of this house. Continue along the main road, which is now on your right, and overlook it.

The path is clearly defined and you will quickly follow a barbed wire fence through a forest that is as untouched as can be. Less than 1 km further on, you will come to a junction of two small paths that gradually diverge from each other.

(6) Turn right and follow the cliff (no particular danger at this point), keeping to the track for another kilometre. Your route will turn regularly to the left. You will begin to see small meadows and, on the opposite slope above you, an isolated farm (called Baydoux - Baÿdous on the map). When you reach it, you will come to a wider path.

(7) Descend, keeping to the right through the woods, following a small stream below on your left. At the bottom, the stream flows into the Arize river in front of you. Turn left over the stream. Cross the field and walk straight ahead until you reach the road at the bridge over the Arize.
Take this road on the right, over the bridge, as if you were retracing your steps, to reach Camp Bataillé 150 metres further on.

(8) You can leave the road and climb up before the first house on the left on a steep slope which, after two short hairpin bends, leads you to a farm. Cross it and climb up a little 100m to pass the few trees. Once you have passed these, turn slightly right and left to follow the low stone wall, keeping it on your left. This is the most difficult part of the hike to find. Climb up the path through the fields, keeping to the right until the stone walls end and the trail disappears.

(9) The forest is in front of you. Walk straight towards it, crossing the field for no more than 20 metres. Follow the forest, keeping it on your right. A few metres further on, you will see a path ahead of you, marked by a wooden stake. Turn onto it with the cow fence on your left (horizontal wire running along the path) and the forest on your right. You can now follow the track to the next junction, at kilometre 9, 1.4 km after leaving the stone walls

(10) Take a sharp right turn and continue walking up this dirt track, which is heavily marked on both sides by tractor tracks. After 500 metres, you will come to a fork in the track.

(11) Go down to the right and follow the track into the forest. When you reach the bottom, the path climbs up in front of you, slightly to your left.

(12) Pass to the right of a tree with six trunks, marked with a yellow sign for short hikes. Follow the trail, which gradually emerges from the woods to open up to a breathtaking view of the valley and the Pyrenees. You will regularly see the ruined castle on your right.
Descend for more than 1 km, passing the Coi d'Aouac fountain (a tiny old stone structure on your left, at the edge of the path).

(13) At the next intersections, follow the signs for the castle, turning right twice.
Follow the path to the castle, crossing the forest again, which, depending on the season, will be dressed in its most beautiful emerald green (see photo).

(14) Once you reach Château de Saint Barthélémy, which you will not be able to walk around due to its condition, you can retrace your steps and then descend to Durban by taking the other track leading to this place, the one on your right as you descend.
Keep to the right, enter the village and take the bridge over the Arize to reach the junction with the D15. Continue straight ahead to reach the town hall, located slightly to the left (S/E).

Waypoints

  1. S/E : km 0 - alt. 366 m - Town hall car park
  2. 1 : km 0.33 - alt. 378 m - Francou hamlet
  3. 2 : km 0.57 - alt. 368 m - Francou wash house
  4. 3 : km 1.73 - alt. 493 m - Montseron Church and Cemetery
  5. 4 : km 3.09 - alt. 484 m - Montseron Town Hall
  6. 5 : km 3.53 - alt. 450 m - Lescalé hamlet
  7. 6 : km 4.53 - alt. 473 m - Crossroads in the woods
  8. 7 : km 5.49 - alt. 396 m - Crossroads at Les Baydoux - Towards - Aryze (rivière) à finaliser
  9. 8 : km 6.59 - alt. 340 m - Place called Campbataillé
  10. 9 : km 7.44 - alt. 454 m - End of the path lined with a low stone wall
  11. 10 : km 8.78 - alt. 518 m - Turn right
  12. 11 : km 9.35 - alt. 558 m - Descend to the right into the forest
  13. 12 : km 9.73 - alt. 550 m - Tree with 6 trunks
  14. 13 : km 11.07 - alt. 434 m - Directions to the castle
  15. 14 : km 12.03 - alt. 469 m - Saint Barthélémy Castle
  16. S/E : km 13.17 - alt. 366 m - Town hall car park

Notes

Bring:
- hiking or trail shoes with crampons, preferably waterproof
- at least 1 walking stick recommended as the ground is often wet and rocky
- water for the entire trip as there are no drinking water sources
- something to eat (fruit, etc.)
- a fully charged mobile phone
- and, of course, a bag or bin liner to keep the precious natural environment clean.

The hike can be completed in 2.5 to 3 hours if you want a challenging workout, but allow 5 hours if you want to take your time to admire and enjoy the scenery.

This is a very natural hike through small villages, and there are no shops along the route. So be sure to plan ahead (the nearest shops are in Castelnau Durban, La Bastide de Sérou and Le Mas d'Azil)
There is no drinking water along the route, but there are picnic tables at the finish and in Lescalé along the way (after 3.5 km). You can also sit in the fields after the Campbataillé farm and enjoy the magnificent view.
You may wish to bring swimming gear in your vehicle so you can swim in the Arize river on arrival.
The route passes through livestock fences. It is essential that you close them behind you to ensure that everyone can enjoy the area and for everyone's safety.

During the hunting season (September to February), please be vigilant on Wednesdays, Saturdays and Sundays.
Finally, take great care around the castle. Falling rocks are possible

Worth a visit

During the hike, you will come across several information boards telling you about interesting facts about this little-known area, such as the Pyrenean desman and the Coi d'Aouac fountain.
In Durban and all along the D15, you will find places to swim in the Arize river.
You are close to the Mas-d'Azil cave, Saint-Girons and the town of Saint-Lizier (palace).

Reviews and comments

4.7 / 5
Based on 50 reviews

Reliability of the description
4.7 / 5
Ease of following the route
4.7 / 5
Route interest
4.7 / 5
panyella
panyella

A beautiful walk, with very few views except at the start towards the Pyrenees. Best done early in the summer to finish before midday.
Thanks for the discovery

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peter one
peter one

Overall rating : 5 / 5

Date of your route : Jul 17, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

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panyella
panyella

Overall rating : 4 / 5

Date of your route : Jul 16, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

a beautiful hike through the woods, not much of a view except at the start towards the Pyrenees. Best done in summer, setting off early to finish before midday.
thanks for the route

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math46
math46
• Edited:

Overall rating : 5 / 5

Date of your route : May 26, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Hike completed yesterday, 26/05/25.
For those of us who live in the mountains, we really enjoyed this hike in the Arize bocage! Flower-filled fields, the banks of the Arize, fountains and a wash house, but above all, the Château de St Barthélémy! We were given a tour by Jeff, the caretaker. It was very informative, and the association is very involved in the restoration of the château.

Important point: no problems with the Patou dogs! You just have to talk to them gently and stay calm, continuing to walk without staring at them... Two or three barks, but nothing more. They accompanied us for 200 metres and then returned to the meadow... No need to worry, they're just doing their job and they know straight away that you're not a predator 😉

A walk to do again during hot weather as it's well shaded in the cool undergrowth!

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peter one
peter one

Overall rating : 5 / 5

Date of your route : May 05, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

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Clo31130
Clo31130

Overall rating : 5 / 5

Date of your route : Apr 21, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A very beautiful hike, well worth doing. Visit the ruins and meet the very friendly caretaker.

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hilde1958
hilde1958

Overall rating : 5 / 5

Date of your route : Apr 01, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A magnificent hike, best done in dry weather. Beautiful, varied landscapes, perfect signage except for the fork (8) towards the Camp Bataillé farm (sign removed?). The sheepdogs were doing their job well. Would it be possible to find an alternative route between points 8 and 9 so that hikers can pass through without disturbing the dogs or farmers?

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Frala
Frala
• Edited:

Overall rating : 5 / 5

Date of your route : Mar 07, 2025
Reliability of the description : Not used / Not applicable
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A very pleasant route with a beautiful mix of forests, alpine meadows and pretty rustic villages in the Arize valley. The castle known as St Barthélémy is a majestic ruin that you come across at the very end of the route. The farmer at Camp Bataillé gave me some advice about the patous (guard dogs) I encountered: talk to the dogs as soon as they approach you, without staring at them! I tried it and it worked. They calmed down and accompanied me for several dozen metres without barking.

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lesvieuxmarcheurs
lesvieuxmarcheurs

Overall rating : 4 / 5

Date of your route : Feb 27, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

The walk was nice. Based on the comments, I expected to encounter one Patou along the way, but certainly not a pack. I was surrounded by five Patous and a Border Collie. I continued on my way without getting upset and protecting myself with my walking sticks because even when I ignored them, they brushed against me. They surrounded me for about 300 metres. It felt like an eternity!
In the distance, there was probably the owner of these dogs. It would have been nice if they had called them. We weren't crossing a field; we were on a path about two hours' walk from where we started.
Unforgettable!!!

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LucB-Rando
LucB-Rando

Very good hike, mostly shaded. Beautiful green surroundings and a lovely finish with the ruins.

WARNING: At point 8, you have to cross the Lieu-dit Campbataillé farm, where there are one or two sheepdogs. One of the dogs tried to turn us back, but you should ignore it, look ahead and keep going. It only barks to warn you and will not attack.

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H v
H v

Overall rating : 5 / 5

Date of your route : Apr 29, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

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Djudju Smile
Djudju Smile

Overall rating : 5 / 5

Date of your route : Mar 25, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Excellent hike, done alone with my dog. Very well marked, no particular difficulties.
The distance/elevation ratio is perfect (13 km for 400 m of elevation) for a workout that's both enjoyable and challenging. There's a water trough at the start and a fountain at the entrance to the cemetery in Montseron where you can refill your water bottles.
Be careful at point 7, as this is a meadow that may be occupied by herds (this was the case for me, with a herd guarded by two patou dogs), so bring a leash for your dogs.
The forest is truly beautiful and very lively. I saw a wide variety of birds and even had the chance to spot a black woodpecker!
The castle is truly spectacular. Finishing the walk in its ruins is the highlight of the hike!

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daniel 31
daniel 31

Overall rating : 5 / 5

Date of your route : Dec 17, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

Route taken two days after three days of rain, a little mud between points 10 and 11, but passable.

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p paulet
p paulet

Overall rating : 4.7 / 5

Date of your route : Aug 12, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A magnificent route that is very pleasant in dry weather and particularly suited to hot conditions as much of it is shaded. In wet weather, the route is likely to be very muddy.
The two points to watch out for are clearly described in the explanations.

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imemoria
imemoria

Hello,
I did this hike yesterday, but my visoRando app showed an elevation gain of approximately 1,220 metres during the route. The description indicates 470 metres. Where do you think the problem lies?

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