The Ébron and the two mills

This walk in the heart of the Trièves region offers some beautiful panoramic views. You are surrounded by the peaks of Dévoluy and Vercors. The route mainly follows beautiful paths and, in part, small roads.

Details

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  • Walking
    Activity: Walking
  • ↔
    Distance: 17.45 km
  • ◔
    Average duration: 6h 25 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 503 m
  • ↘
    Descent: - 503 m

  • ▲
    Highest point: 979 m
  • ▼
    Lowest point: 656 m

Photos

Description of the walk

(S/E) Leave the central square of Prébois by heading north on the departmental road that crosses the village. Walk past the church and, a little further on, take the D253 on the left towards Saint-Maurice-en-Trièves. You will see yellow markings. Cross the "plain" along a long straight stretch, keeping to the left of the road. As you cross, you will already enjoy a 360° view of the mountains. At the end of the straight stretch, when the road turns left, take a wide track on the right.

(1) Very quickly, take a discreet path that descends to the left and returns to the departmental road. Descend to the right. Cross the first bridge over the Ébron. Shortly afterwards, turn left (wooden sign with the inscription "Moulin de Recours").

(2) Shortly before the mill, you will see a sign pointing towards "Moulin de Recours". Go up to the right towards Chamelouve, crossing the Bois des Gones. After a fairly long walk, ignore the first stony path that branches off to the left. Very soon after, you will see the sign for "Chantelouve - alt. 785m".

(3) Turn left towards Mont l'Heaut, following a stream.

(4) Further on, take a track on the right. You will come to a sign for "Mont l'Heaut - alt. 730 m".

(5) Continue straight ahead towards Les Adrets.

(6) You will arrive at the sign for "Les Adrets - alt. 785 m". Continue straight ahead towards Avers. Descend and pass through the hamlet of Pied-Gros. Ignore a narrow lane that branches off between two houses at a circular section of the road.

(7) Go back up and ignore two paths on the left (there is a bench at the second one). Quickly take a path that goes up to the left to reach the hamlet of Avers. Cross the D66 and take Rue de la Chapelle opposite.

(8) Once you reach it, turn left. At the end of the hamlet, continue straight ahead along a stone path that leads to the D216a. You will see a sign with a large number 26 on it.

(9) Turn right towards "La Cabane". Very quickly, turn left onto a discreet grassy path that descends. You will come out onto another road (D216), which you will also take on the right. Take the first path on the left. You will come out onto a road, and on your left you will see the second bridge over the Ébron.

(10) Just before the bridge, on the right, there is a picnic table. Cross the bridge to enter the hamlet.

(11) In the middle of the hamlet, just before a circular, you will see a sign on the right indicating "Prébois 6.3 km". Go up Chemin des Clos. You will come to a house. Go up on the left. And off you go for a fairly steep 220 m climb over 1.7 km. Further on, you come to a track which you take on the left. Even further on, at a fork, you take the right-hand path (always follow the yellow markings). You come to a sign saying "Daniel - alt. 950 m".

(12) Turn left towards Prébois (4.1 km). At a fork, take the left-hand path. Cross the D66. You will see a sign for "Col du Banchet - alt. 900 m". At this point, you will have what I consider to be the most beautiful view of the walk (but that's subjective...).

(13) Continue along the rocky track opposite, towards Prébois (3.4 km).

(14) At a fork, take the less obvious path on the right (towards the bench). Continue north-west until you reach a road (D254A).

(15) Follow it to the left. You will arrive at the Prébois cemetery and turn right to enter the village and return to your starting point (S/E).

Waypoints

  1. S/E : km 0 - alt. 763 m - Prébois church square
  2. 1 : km 1.08 - alt. 729 m - Discreet path on the left
  3. 2 : km 1.73 - alt. 670 m - Moulin de Recours sign
  4. 3 : km 3.63 - alt. 783 m - Chantelouve sign alt. 785 m
  5. 4 : km 4.39 - alt. 746 m - Turn right at the fork.
  6. 5 : km 4.85 - alt. 738 m - Mont l'Heaut sign altitude 730 m
  7. 6 : km 6.26 - alt. 787 m - Les Adrets sign altitude 785 m
  8. 7 : km 6.75 - alt. 758 m - Hamlet of Piedgros
  9. 8 : km 8.7 - alt. 801 m - Chapel of Avers
  10. 9 : km 9.64 - alt. 794 m - Sign "26"
  11. 10 : km 10.66 - alt. 756 m - Bridge over the - Ébron (torrent)
  12. 11 : km 10.97 - alt. 762 m - Sign Prébois 6.3 km
  13. 12 : km 13.05 - alt. 959 m - Signpost Daniel alt. 950m
  14. 13 : km 13.88 - alt. 899 m - Sign alt. 900 m - Col du Blanchet (902m)
  15. 14 : km 14.83 - alt. 885 m - Fork with a bench
  16. 15 : km 16.14 - alt. 799 m - Departmental
  17. S/E : km 17.45 - alt. 763 m - Prébois church square

Notes

The walk starts in Prébois, a village in the Isère department, in the centre of the Trièves basin, south of Grenoble.

You can park in the square in Prébois, not far from the small church with its pretty stone bell tower.

There is a fountain with plenty of water. There is no indication of the quality of the water. It seems drinkable.

The only two difficulties of this walk are its length and a long, very steep climb after the hamlet of Les Petits Moulins (220 m elevation gain over 1.8 km). Otherwise, the route is on good paths or small asphalt roads.

The walk is almost entirely marked in yellow.

There is a picnic table at the Petits Moulins bridge.

In the centre of Prébois, there is a wine cellar created by a young winegrower who is replanting vineyards that had disappeared (made famous by Giono).

Worth a visit

Throughout most of the walk, you will have a panoramic view of the surrounding peaks: Taillefer, Bonnet de Calvin, Obiou, the peaks of Dévoluy, Grand-Ferrand, Jocou, Mont Aiguille, Grand Veymont, Les Deux Soeurs, Pic St Michel, and, in the distance, the peaks of Chartreuse.

The pretty village of Mens, located nearby, is also worth a visit.

Reviews and comments

4.6 / 5
Based on 9 reviews

Reliability of the description
4.8 / 5
Ease of following the route
4.6 / 5
Route interest
4.3 / 5
cornet22
cornet22

Overall rating : 4.3 / 5

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

Beautiful hike, moderate difficulty.
18.5 km on the clock. Beautiful panoramic views of the Vercors and Dévoluy mountains.

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ocarina0656
ocarina0656

Overall rating : 5 / 5

Date of your route : Jun 30, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

I have fond memories of this beautiful hike with its magnificent panoramic views. It was a peaceful day with few other hikers.

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Slv8313
Slv8313

Overall rating : 4.7 / 5

Date of your route : Aug 17, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A lovely walk in glorious weather with superb views.

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sommet
sommet

Overall rating : 4.3 / 5

Date of your route : May 11, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

Interesting hike, but a bit too much road;

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sommet
sommet

Overall rating : 4.3 / 5

Date of your route : May 11, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★☆☆ Average
Very busy route : No

A bit too much driving, that's a shame!

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geai47
geai47

Overall rating : 4.3 / 5

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

The Trièves region is particularly enchanting in spring.
At Point 2: At the exit of the Bois des Gones, take the track on the left and follow it for 1 km until you see the sign for "Chantelouve".
At Point 7: After the hamlet of Pied-Gros, descend, cross the bridge and then climb back up.

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casillas
casillas
• Edited:

Overall rating : 4.3 / 5

Date of your route : May 15, 2022
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

The Trièves region is very beautiful. At point 1, we did not take the trail; we preferred to take the road that goes around it. At point 11, we continued on the road because the storm was closing in on us and we even got caught in a light shower. We shortened the route by taking a small detour that climbs steeply and arrives at point 14, still covering 17 km with a 380 m elevation gain. For us, there was a bit too much tarmac road, but there was no traffic and we didn't see anyone else on this route.

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jean-louisetedirh38
jean-louisetedirh38

Overall rating : 5 / 5

Date of your route : Mar 20, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Beautiful circular, varied routes and stunning scenery.

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Antoine3869
Antoine3869

Overall rating : 4.7 / 5

Date of your route : Jul 27, 2021
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

Very nice hike, no particular difficulties. Pleasant paths, beautiful scenery. With the downloaded track, no problems at all.

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