The Château de Joux and Fort Mahler

Pass through pastures dotted with gentians and friendly, cuddly horses, then through cool fir forests with slender trees to discover Fort Malher and Château de Joux overlooking the valley with all the imposing severity of a medieval watchtower.

Details

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  • Walking
    Activity: Walking
  • ↔
    Distance: 9.72 km
  • ◔
    Average duration: 3h 40 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 325 m
  • ↘
    Descent: - 320 m

  • ▲
    Highest point: 1,090 m
  • ▼
    Lowest point: 841 m

Photos

Description of the walk

Parking at the exit of Pontarlier towards La Cluse-et-Mijoux, Chemin du Larmont, opposite the Contact supermarket. Yellow-blue and white-red markings.

(S/E) Go up Chemin du Larmont to the gas installation. At the left corner of the station, cross the pasture via the small metal footbridge. Cross the pasture, keeping the gas installation behind you, and at the fence, go up to the right, following the barbed wire, which will soon be replaced by blackthorn bushes.

(1) About 20 metres further on, look for a stone on the ground with a signpost indicating the path to the left that leads into the copse. You will come to the road, which you cross, continuing across the pasture opposite, dotted with gentians. Further up, cross the road again and do the same, passing at the foot of the pylon. You will enter a pine forest and the path will split, rejoining a little further up. You will return to the Route du Larmont. Continue along the path that runs alongside the safety barrier in the hairpin bend to reach the FFI Memorial.

(2) Take the beautiful stony path on the left, descending into a beautiful fir forest with slender trees. At the meadow, continue climbing to the right along the same path. You may encounter some friendly horses that will escort you for a while.

(3) At the end of the pasture (press the top of the metal gate), turn right and walk about 30 metres. At the fork, go up to the right. As you pass under the ski lift, take a look to your right at the Roche de Hautepierre. Pass between the Jantets farms and continue to the right, passing in front of the riding school. You will come back to the Route du Larmont, which you follow downhill to the right for 200 metres.

(4) Turn left onto the gravel path until you reach the crossroads marked by a signpost (Chemin du Fort).

(5) Continue straight ahead towards Cluze-et-Mijoux, Fort Malher.

(6) You will pass in front of the fort, which is closed to visitors. At the corner of the ramparts, turn right (despite the crosses) and follow the walls until you reach the viewpoint overlooking the Château de Joux. Turn left onto the path, which is half stone and half grass, and descend below the fortification.

(7) You will come to a stone path that you follow down to the right, passing picnic tables, until you reach a bench, which offers another beautiful view of the fort. Retrace your steps back to the fort.

(5) Then turn left towards the Fer à Cheval viewpoint. Walk along a clearing on your right and the path forks. Climb up the stony path on the right. Look for a sign on a spruce tree (mountain bike trail) indicating that you should take a path on the left to reach the viewpoint.

(8) To return, follow the small, wilder path on the far left, which continues along the ledges for a while, offering other viewpoints that you should approach with caution as they are not secured. You will rejoin the marked path, ignoring all the paths leading down to your left.

"Alternative: follow the stony, marked path that leaves between the two benches."

Much further down, there is a fork in the stony paths (the signpost is on the right). They quickly join up again. I took the left-hand path, which is quicker.

At the triangular clearing, turn right to rejoin the Chemin du Larmont (tarmac), descending to the left until you reach the car park (S/E).

Waypoints

  1. S/E : km 0 - alt. 841 m - Chemin du Larmont car park - Doubs (rivière)
  2. 1 : km 0.43 - alt. 886 m - Grove
  3. 2 : km 1.27 - alt. 1,019 m - FFI memorial
  4. 3 : km 2.26 - alt. 1,033 m - Chasal du Creux
  5. 4 : km 3.8 - alt. 1,071 m - Les Jantets
  6. 5 : km 4.71 - alt. 1,058 m - Crossroads
  7. 6 : km 5.45 - alt. 1,023 m - Fort Malher
  8. 7 : km 5.78 - alt. 995 m - Picnic tables.
  9. 8 : km 7.9 - alt. 991 m - Viewpoint - Point de Vue du Fer à Cheval (La Cluse)
  10. S/E : km 9.72 - alt. 841 m - Chemin du Larmont car park

Notes

Rocky and slippery paths in places. Good footwear is essential and walking sticks are recommended.

Reviews and comments

4.6 / 5
Based on 24 reviews

Reliability of the description
4.7 / 5
Ease of following the route
4.6 / 5
Route interest
4.5 / 5
POBANZ G
POBANZ G

Overall rating : 4 / 5

Date of your route : Aug 10, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

A lovely walk through woods and pastures, with superb views from the Fer à Cheval viewpoint and the Château de Joux.

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GéraldCh25
GéraldCh25

Overall rating : 4.7 / 5

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

A lovely walk with beautiful views of the Château de Joux.
No particular difficulty, a most pleasant stroll through the pastures.

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raphaël olivier
raphaël olivier

Overall rating : 4 / 5

Date of your route : Mar 08, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

A pleasant and varied route, white path, forest, hills, castles, viewpoints...

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SB1009
SB1009

Overall rating : 4.3 / 5

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

A beautiful walk, with a fairly steep start and muddy pastures, but that's to be expected at this time of year... The highlight of the show, the Château de Joux, is well worth the effort!

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kotcha
kotcha

Overall rating : 4.3 / 5

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

Great route completed in run/trail mode

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Zirakos
Zirakos

Overall rating : 4.7 / 5

Date of your route : Jul 01, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

The first part to Fort Mahler isn't the most interesting, but it's pleasant. There's a magnificent view from Fort Malher, where we turned back. The return trip to the starting point takes you down a beautiful descent along the ridge and through the forest.
A lovely walk to do once

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broussouj
broussouj

Overall rating : 5 / 5

Date of your route : Aug 27, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Very well-informed hike. Route signposted almost all the way (some signs missing at the end). Beautiful view from Fort Malher and the Fer à Cheval viewpoint. Highly recommended.

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damasa47
damasa47

Overall rating : 5 / 5

Date of your route : Jun 28, 2021
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Easy hike with beautiful views of the castle 🏰

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xerocrete
xerocrete

Overall rating : 5 / 5

Date of your route : May 26, 2021
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A beautiful hike, starting with a tough climb.
Beautiful views of the Château de Joux.

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marchef
marchef

Overall rating : 4 / 5

Date of your route : Sep 13, 2020
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

Very beautiful hike, very beautiful views

Thank you

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Joarkal
Joarkal
• Edited:

Overall rating : 4.3 / 5

Date of your route : Aug 13, 2020
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

A beautiful, easy walk apart from the first section to the memorial stone through the pastures.
And yes, the yellow/blue marks painted on the ground on the stones are a little faded in this section
Magnificent view of the Château de Joux from Fort Mahler
Thank you

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chrisler25
chrisler25

Overall rating : 5 / 5

Date of your route : Jul 25, 2020
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A very beautiful walk, very well detailed and easy to follow.

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stole
stole

Overall rating : 5 / 5

Date of your route : Feb 07, 2020
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

Enjoy your walk and the beautiful scenery. The only downside is that the yellow and blue markings are partially visible between points 1 and 4, although they are very recent.
A quick lick of paint would be welcome.

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philippe jean
philippe jean

Overall rating : 4.3 / 5

Date of your route : Dec 30, 2019
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good

Good description, accurate. Quite an interesting hike and suitable for beginner walkers

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Helene P2.
Helene P2.

Overall rating : 5 / 5

Date of your route : Sep 19, 2019
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

Thank you for this beautiful hike with magnificent views of the Château de Joux.
The explanations are detailed and very easy to follow.
As I was short on time, I took a shortcut and followed the road between points 2 and 4, which saved me about 2 km. So I walked at a brisk pace for 2 hours

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