A varied circular loop starting from Chirens

This circular walk, starting from the village of Chirens, begins by crossing the Marais de l’Ainan, a designated Sensitive Natural Area, then climbs through the forest towards the Croix des Cochettes, and on to the Motte Castrale du Châtelar. The return route takes you via the Tour de Clermont-Tonnerre and the Guillermet, then along a path opposite Bavonne.

Details

72991244
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  • Walking
    Activity: Walking
  • ↔
    Distance: 10.60 mi
  • ◔
    Average duration: 6h 25 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 1,791 ft
  • ↘
    Descent: - 1,795 ft

  • ▲
    Highest point: 2,644 ft
  • ▼
    Lowest point: 1,493 ft

Photos

Description of the walk

Park in Chirens, for example in the car park on Route de la Cascade.

(S/E) Turn onto Rue des Rampeaux towards the village centre. 

(1) Cross the D1075 at the pedestrian crossing and continue straight ahead onto Avenue du 19 Mars 1962. Walk past the boules court and the cemetery, then continue along the path that goes round the tennis court until you reach Chemin de l’Ainan.

(2) Turn right onto this path, then right again 30 metres further on, to enter the Marais de l’Ainan Sensitive Natural Area, marked by a small wooden gate and an information board. Follow the footpath or wooden walkways through the marsh.

(3) Take a short detour to the left to see the exposed pond and observe the marsh’s flora and fauna. Then continue straight ahead to reach the Chemin de Beaudiné.

(4) Turn left onto this path and, following a level route, reach the Route du Touvat.

(5) Turn left towards the Arsenal, then first turn right then left onto the D82. Follow the Chemin du Lavoir to the D1075.

(6) Cross this very busy road with great care, then head uphill opposite along the Chemin du Petit Bois to the hamlet of La Guilletière.

 (7) Walk through the hamlet and leave via the Chemin du Bois du Gros. Walk uphill to the spot known as la Fontaine du Loup. Then walk down into the valley to the hamlet of Bozon.

(8) Take the small road on the right and head back up through another valley. Reach the Croix des Cochettes , where you can enjoy a magnificent panoramic view of Lake Paladru.

(9) Set off again along the path on the left and climb up to the crossroads at Bois du Grand Platon.

(10) Turn left downhill and then veer right at a place called Le Châtelar to reach the Motte Castrale.

(11) Walk down into the small ditch that surrounds this motte and follow it round to the entrance on the western side. Set off again along the path descending steeply on the western side. At a hairpin bend, join a new path.

(12) Turn left onto this less steep path. At the end of this path, take the road that continues it and follow it to the village of Clermont.

(13) Turn right and continue straight ahead along the Chemin de la Tour, which starts as a tarmac road and then becomes a country track. You’ll reach a crossroads of footpaths.

(14) Please note: do not follow the route shown on the IGN map straight ahead, but instead follow the OSM (OpenStreetMap) route to reach the Tower of Clermont-Tonnerre, now in ruins and the sole remnant of a feudal castle.

(15) Continue along the path to the north. There is a short but fairly steep descent. The path then descends gently to the Eyguebelle crossroads.

(16) Carry on to the left, skirting the hamlet of La Contamine, then reach the Route du Guillermet.

(17) Follow this road straight ahead until you reach the hairpin bend to the right. Leave the road here and take the path opposite, through the fields of Les Fontenettes. After a circular bend, you’ll reach the edge of the D50a.

(18) Continue along the path running alongside the River Fure on your right. Turn off the path and keep right at the next junction to reach another Y-junction.

(19) Turn right to reach Chirens and the car park on Rue de la Cascade (S/E).

Waypoints

  1. S/E : mi 0 - alt. 1,545 ft - Car park on Route de la Cascade
  2. 1 : mi 0.23 - alt. 1,522 ft - Crossing the D1075
  3. 2 : mi 0.52 - alt. 1,506 ft - Chemin de l’Ainan and entrance to the Nature Reserve
  4. 3 : mi 0.82 - alt. 1,493 ft - Return to the uncovered pond
  5. 4 : mi 1.1 - alt. 1,516 ft - Chemin de Beaudiné
  6. 5 : mi 2.09 - alt. 1,512 ft - Route du Touvat
  7. 6 : mi 2.49 - alt. 1,555 ft - Crossing the D1075
  8. 7 : mi 2.92 - alt. 1,860 ft - The hamlet of La Guilletière
  9. 8 : mi 3.78 - alt. 2,021 ft - Le Bozon hamlet
  10. 9 : mi 4.8 - alt. 2,362 ft - Croix des Cochettes crossroads
  11. 10 : mi 5.17 - alt. 2,644 ft - Junction
  12. 11 : mi 5.96 - alt. 2,418 ft - The Châtelar motte
  13. 12 : mi 6.26 - alt. 2,175 ft - Junction
  14. 13 : mi 6.91 - alt. 1,880 ft - The hamlet of Clermont
  15. 14 : mi 7.37 - alt. 2,024 ft - Meadow
  16. 15 : mi 7.52 - alt. 2,096 ft - Tour of Clermont-Tonnerre
  17. 16 : mi 7.91 - alt. 1,739 ft - Eyguebelle crossroads
  18. 17 : mi 8.35 - alt. 1,699 ft - Le Guillermet
  19. 18 : mi 9.43 - alt. 1,526 ft - Opposite Bavonne
  20. 19 : mi 10.05 - alt. 1,591 ft - Junction
  21. S/E : mi 10.6 - alt. 1,545 ft - Car park on Route de la Cascade

Notes

The route presents no technical difficulties. IBP = 75.

Worth a visit

(11) Châtelar Motte Castrale: make your way to the centre of the motte castrale. This is an ancient fortification, dating from around the year 1000, which was probably built of cob or rammed earth, of which nothing remains.
(15) Les Clermont-Tonnerre

Reviews and comments

4.6 / 5
Based on 3 reviews

Reliability of the description
4.7 / 5
Ease of following the route
4.7 / 5
Route interest
4.3 / 5
User 3358419

Overall rating : 4.7 / 5

Date of your route : Nov 03, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

A very beautiful hike with a flat start to warm up nicely in the marsh, before tackling some beautiful climbs and, above all, descents that were sometimes "dizzying", especially in the conditions we encountered: very muddy terrain.
We were able to enjoy the autumn colours, which were truly superb!

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Franchi Christiane
Franchi Christiane

Overall rating : 4.7 / 5

Date of your route : Oct 18, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

completed in early October, a pleasant hike with no difficulty. Beautiful views. Best done in dry weather as some slopes can be slippery. Christiane F.

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promenades
promenades

Overall rating : 4.3 / 5

Date of your route : May 30, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : Yes

A beautiful hike without any major difficulties. The section through the natural marshland is very pleasant and peaceful. There are lots of people at the Cochettes cross, which offers magnificent views of Lake Paladru.

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