The Val de Sirod and the Perte de l'Ain

Ten minutes from Champagnole, the most powerful of the medieval fortresses still stood not so long ago... A nature and heritage walk awaits you through the Val de Sirod around the site of the Perte de l'Ain, which is at the end of this route. You will pass by the Château Villain fortress, viewpoints, the Rocher des Commères, the castle chapel, the Fontaine des Tufs, the Roche des Sarrasins, the village of Syam, and more.

Details

20386902
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  • Walking
    Activity: Walking
  • ↔
    Distance: 16.30 km
  • ◔
    Average duration: 6h 05 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 496 m
  • ↘
    Descent: - 493 m

  • ▲
    Highest point: 796 m
  • ▼
    Lowest point: 534 m

Description of the walk

Depart from the car park at the entrance to the village of Bourg-de-Sirod, next to the town hall.

(S/E) At the car park, follow the signpost for Nozeroy and climb the path to the fortified gate of Richebourg. This is one of the old salt roads where convoys on their way to Switzerland paid the salt tax.

(1) After the fortified gate, at the signpost, follow the direction of Nozeroy to the left along the path that climbs uphill. At the Roches Graviers signpost, continue straight on towards Nozeroy along the ridge and you will reach the ruins of Château Villain.

(2) Continue along the ridge on a pleasant path until you reach a fork where the slope levels out.

(3) Turn right and follow the path to the road. At the sign for "suivre Nozeroy" (follow Nozeroy), go 200 metres to the right and you will reach a hairpin bend to the left. You will see the signpost for "aux Combes".

(4) Turn right towards "Escalier des Coucous" then quickly take a path in the field on the left that runs alongside the track. Follow the edge on the right-hand side to the end. Climb over the fence using the rock then walk a few metres to the left to the viewpoint.
Then retrace your steps to the rock and take the path straight ahead. Descend to reach the Escalier des Coucous.

(5) At the bottom of the stairs, turn left (there is currently no signpost for "Rocher des Commères"). Pass between large boulders with vegetation that changes frequently.

(6) At Rocher des Commères, continue along the path downhill. Pass through a coniferous forest, then a field, and arrive at an intersection with a road. Take the small path opposite that goes downhill and join the fork with a signpost.

(7) Continue to the right, towards Nozeroy, until you reach the castle chapel via Rue les Chaffaux.

(8) Continue along the path towards Nozeroy for 100 metres and turn left at the "Richebourg" signpost. Follow the signs for "Sous le Mou", walk for 300 metres and at the "Sous le Mou" signpost, turn left towards "les Tufs".
At the cross path overlooking the Ain, turn left. Cross the Ain bridge (EDF structure) and continue to the Source des Tufs.

(9) Continue along the path and at the next intersection, at the "les Tufs" signpost, turn left towards "Côte Poire". When you reach the tarmac, ignore it and continue along the path on the left. This path goes around the Côte Poire ridge and comes back down the other side of the slope. At the three-way junction, turn right and continue to the intersection with the "Côte Poire" signpost.

(10) Take the path on the left towards "Syam". You will reach a hairpin bend in the road. Ignore the road and take the path on the right. You will reach La Roche des Sarrasins.

(11) Pass between the two blocks of rock and continue along the path to the road. Follow it to the right and enter the village of Syam. Reach the fork in the road just after the church, with a fountain in the centre.

(12) Turn left onto Rue du Lavoir, which runs alongside the church. At the next intersection, turn right and descend to the crossroad below. Turn right, ignore a road on the left and find a path on the left just after the house. Follow this path, which begins with a flight of steps, and climb up to the Chapel of Notre-Dame de la Paix.

(13) Continue downhill along the path next to the chapel and join Rue des Scilles. Turn right onto the D127, Rue des Sarrazins, and turn left.

(14) After the local girls' school, continue along the path on the right for about 3 km until you reach the signpost for "Les Forges". With the Ain river on your left, walk along it to the bridge and back to admire the scenery.
Back at the "les Forges" signpost, follow the sign for "Perte de l'Ain à 200 m" on the left. Continue to the next fork.

(15) Turn left for a round trip and arrive at the Perte de l'Ain. Retrace your steps.

(15) On your return, turn left towards "la Passerelle" and cross the Ain.

(16) Continue and further on, at the "Côte du Martinet" signpost, turn left towards "Bourg de Sirod" and reach the Chambre d'Eau. The water is channelled to supply a hydroelectric power station.

(17) Continue along the path and you will reach the town hall on your right (S/E).

Waypoints

  1. S/E : km 0 - alt. 586 m - Car park at the entrance to the village "town hall".
  2. 1 : km 0.29 - alt. 627 m - Fortified gate of Richebourg
  3. 2 : km 1.09 - alt. 710 m - Villain Castle
  4. 3 : km 2.16 - alt. 796 m - Path intersection
  5. 4 : km 2.8 - alt. 781 m - Intersection of the road and the "Poteau indicateur" path.
  6. 5 : km 3.37 - alt. 735 m - Bottom of the Coucous Stairs
  7. 6 : km 3.78 - alt. 667 m - Rocher des Commères
  8. 7 : km 4.39 - alt. 611 m - Intersection with the "signpost" road.
  9. 8 : km 5.22 - alt. 650 m - Castle chapel
  10. 9 : km 6.43 - alt. 580 m - Source des Tufs - Ain (rivière)
  11. 10 : km 9.84 - alt. 726 m - Intersection
  12. 11 : km 10.84 - alt. 616 m - Roche des Sarrasins
  13. 12 : km 11.19 - alt. 562 m - Village of Syam
  14. 13 : km 11.65 - alt. 579 m - Chapel of Our Lady of Peace
  15. 14 : km 12.15 - alt. 547 m - Communal school for girls
  16. 15 : km 15.41 - alt. 567 m - Perte de l'Ain
  17. 16 : km 15.67 - alt. 554 m - Footbridge - Ain (rivière)
  18. 17 : km 15.93 - alt. 584 m - Water chamber
  19. S/E : km 16.3 - alt. 586 m - Car park at the entrance to the village "town hall".

Notes

(1) You can reach the upper part of the fortified gate by taking the small path on the left as you climb. Exhibitions are sometimes held there.

Worth a visit

Ruins of Château Villain: This castle was built by Simon II of Commercy at the end of the 12th century. It was 200 metres long and 34 metres wide. After numerous wars of conquest by the Kingdom of France, the castle suffered a final, fatal assault between 1808 and 1810. It was used as a stone quarry for the reconstruction of the forges of Bourg-de-Sirod, which had burned down.

Reviews and comments

4.5 / 5
Based on 11 reviews

Reliability of the description
4.6 / 5
Ease of following the route
4.1 / 5
Route interest
4.8 / 5
Gp&Pmn
Gp&Pmn

Overall rating : 4 / 5

Date of your route : May 15, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Very busy route : No

Please note that some fences may disrupt your journey. No issues with the Visorando app on your phone.

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NOLLICEC
NOLLICEC

Overall rating : 5 / 5

Date of your route : Sep 13, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

The first part of the route (points 1 to 9) is identical to that of the "rochers de commères" (gossip rocks), which we had already done a few days ago. The Ain waterfall is magnificent from point 9 (view from above), then there is a long, gentle climb to point 10, followed by a rapid descent to Syam (caution: slippery in wet weather). No visitors due to very changeable weather (rain/sun). Return to the Ain sinkhole (view from below) with a beautiful waterfall.

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bisontin
bisontin

Overall rating : 4.7 / 5

Date of your route : Jul 31, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : Yes

Very beautiful hike.

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Rentrotter
Rentrotter

Overall rating : 4.7 / 5

Date of your route : Jul 02, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

Superb hike, very well maintained in slightly tricky areas, such as the Coucous stairs, in rainy weather and on slippery ground. The slightly more monotonous sections are quickly compensated for by more technical sections, and the Ain river rapids at the end are truly magnificent. This area is a little busier, but the village of Syam is also very pleasant. Take a short detour to the Palladian villa and its park.
Thanks to the author for sharing this beautiful route.

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Libelleule 70
Libelleule 70
• Edited:

Very beautiful parish-specific to Brittany hike - magnificent panorama - small trails that are sometimes a bit technical - I got a little lost at the point (10) - didn't find the Roche des Sarrazins but rejoined the trail by zigzagging through the forest to the road to Syam -braov

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Michel lacroix
Michel lacroix

Overall rating : 4.7 / 5

Date of your route : May 19, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Superb hike with stunning views and interesting geological features. At point 11, after passing between the two rocks, the descent towards the road leading to Syam is a little tricky.
High traffic only in the vicinity of the car parks.
Highly recommended.
Well done to the author.

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YAO
YAO

Overall rating : 4.3 / 5

Date of your route : Apr 03, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : Yes

A very attractive, varied trail, the passage between Les Commères is one of the highlights of this hike.
A great way to explore the region.

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Tirry
Tirry
• Edited:

Overall rating : 4 / 5

Date of your route : Mar 06, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : Yes

Hike done on a cold day, with sunshine.
Very pleasant route from 1 to 9. Encounter with a chamois at Château Villain. From 9 to 14, a little monotonous.
We had a picnic near the little chapel.
Pleasant overall.

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Renard 39
Renard 39

Overall rating : 5 / 5

Date of your route : Dec 21, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Very pleasant hike. No one else on the trail (it's December). Perfect description. The sign for "Rocher des Commères" is still missing, but with the map, it's easy to find. The cables on the Escalier des Coucous are very helpful when the trail is muddy.

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Rabatteur27
Rabatteur27

Overall rating : 4 / 5

Date of your route : Jul 13, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★☆ Good
Very busy route : No

Very beautiful hike, fairly well shaded during heatwaves
I got lost twice... the markings are sometimes missing, leaving room for doubt...
Shorter version by taking the GR at point 10
Also very nice
Saw several chamois

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DROUILLOT
DROUILLOT

Overall rating : 4.7 / 5

Date of your route : Jul 10, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

Thank you very much for this beautiful hike. We just found the long, monotonous stretches at (9) and (14) on less pleasant paths with limited scenery. But everything else is superb and a big advantage: there is always water at the Ain sinkholes, even during droughts. There are more people around the Ain sinkholes, but not excessively so.
Suggested picnic spots: bench at the castle chapel (7) and table with benches at Syam (13).

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richardd
richardd

Overall rating : 4.3 / 5

Date of your route : Jun 12, 2022
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : Yes

A very interesting hike with several beautiful views of the Ain Valley and the surrounding villages. Les Perte de l'Ain is a magnificent place. Most of the hike takes place in the forest, which is very pleasant in hot weather. A must-do.

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