Loop from Col de Rousset to Refuge du Col de Vassieux

Loop starting from the Col du Rousset, setting off along the superb old mule track carved into the hillside, then skirting the plain of the Bergerie de Chironne to reach the Col de Vassieux refuge in the forest. Return via the path overlooking the Diois valley, via the But de l'Aiglette and the Rochers de Chironne.
A hike offering a variety of landscapes, overlooking the Diois valley, without being vertiginous. Some hikers have even spotted vultures here.

Details

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  • Walking
    Activity: Walking
  • ↔
    Distance: 12.91 km
  • ◔
    Average duration: 5h 20 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 572 m
  • ↘
    Descent: - 580 m

  • ▲
    Highest point: 1,537 m
  • ▼
    Lowest point: 1,240 m

Description of the walk

Park in one of the two car parks at the exit of the Col du Rousset Tunnel, on the Diois side.

(S/E) Head west-northwest and go around the barrier to climb the path on the right towards the Via Ferrata du Col du Rousset. Continue straight ahead to follow the mule track along the hillside. Cross the forest via the winding path until you exit the forest.

(1) Once you reach the Bergerie plain, continue north and climb the path through the meadows to the Col de Chironne, leaving the Bergerie on your left.

(2) At the pass, turn left then right. At the three-way junction, follow the path on the left.

(3) Enter the forest. Follow the path that curves to the left (ignore the path on the right). The path leads to a hairpin bend in another path: take the path opposite (south-south-west) and follow theGRP®, ignoring the paths on either side. Continue downhill to Les Charbonniers.

(5) Climb up opposite (due west) via the unmarked path, which becomes a trail (theGRP® continues further to the right). Join theGRP® and follow it to the left.

(6) At the next junction, take the path 90° to the right (north-northeast) as indicated bythe GRP®, and descend. At the forest road, turn left to reach the Col de Vassieux.

(7) From there, turn right to climb through the woods and reach the next viewpoint (elevation 1359).

(8) Head north to the Col de Vassieux refuge and retrace your steps to the viewpoint.

(8) Descend to Col de Vassieux via the same route you took on the way up.

(7) Continue straight ahead (south-east) on the path along the cliff to reach the But de l'Aiglette.

(9) Continue along the cliff on the Rochers de l'Aiglette (northeast).

(10) At the edge of the woods, at the post, turn right (southeast) and follow the cairns on the Rochers de Chironne. Turn northeast and descend along the woods.

(11) Enter the woods, which form a funnel at the last cairn. Follow the path straight through the woods to the bottom of the plain below the sheepfold.

(1) Turn right to descend back into the forest and rejoin the mule track in the opposite direction to return to the car park at the start (S/E).

Waypoints

  1. S/E : km 0 - alt. 1,248 m - Car parks at the tunnel exit - Col de Rousset
  2. 1 : km 1.43 - alt. 1,351 m - Bottom of the Bergerie plain. Towards - Col de Chironne
  3. 2 : km 2.17 - alt. 1,419 m - Col de Chironne - Bergerie de Chironne
  4. 3 : km 2.77 - alt. 1,396 m - Entrance to the forest
  5. 4 : km 3.16 - alt. 1,405 m - Start of the main path
  6. 5 : km 5.12 - alt. 1,316 m - Carrefour des Charbonniers
  7. 6 : km 5.64 - alt. 1,348 m - GR to the right
  8. 7 : km 6.16 - alt. 1,329 m - Col de Vassieux (1333m)
  9. 8 : km 6.62 - alt. 1,351 m - Viewpoint from the Col de Vassieux refuge
  10. 9 : km 8.76 - alt. 1,507 m - Goal of the Aiglette
  11. 10 : km 10.06 - alt. 1,498 m - Post
  12. 11 : km 10.89 - alt. 1,376 m - Cairn at the entrance to the forest
  13. S/E : km 12.91 - alt. 1,248 m - Car parks at the exit of the Col du Rousset Tunnel

Notes

No water on the route.
It is possible to sleep at the refuge (following the instructions).

Worth a visit

A few geocaching caches at the start and at the furthest point of the loop...

Reviews and comments

4.7 / 5
Based on 17 reviews

Reliability of the description
4.6 / 5
Ease of following the route
4.7 / 5
Route interest
4.8 / 5
alienoralienor
alienoralienor

Overall rating : 4.3 / 5

Date of your route : Dec 13, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A very beautiful route, varied with forest, ridges and mountain pastures. A wonderful discovery! However, I think the time estimate is overestimated; I did it in 3½ hours.

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OMOMOM
OMOMOM

Overall rating : 5 / 5

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

Hello,
This is an easy hike alternating between tracks and trails in the woods, alpine paths and ridges between cairns. It can be done from April to November due to the moderate altitude (1,200-1,500 m) and the southern exposure of the ridges. There are beautiful views of the Vassieux plateau on the north side and the Die valley on the south side. Duration (5.5 hours) and distance (14 km) slightly exaggerated. 12 km loop completed in 4.5 hours at a normal walking pace. Best regards, MICHEL Ollivier

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User 4545381

Overall rating : 4.3 / 5

Date of your route : Jul 07, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

Completed in 3½ hours during a heatwave in the valley, pleasant as two-thirds of the route is in the shade.

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Jeepy Gmitou
Jeepy Gmitou

Overall rating : 4.7 / 5

Date of your route : May 09, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

The final stretch to reach the Col du Rousset can be tricky due to poor visibility.

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Ange Heureux
Ange Heureux

Thank you for the video: it gives a good overview of the hike
And it brings back fond memories of these places!
Ange

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Olivier Poncin
Olivier Poncin

Overall rating : 5 / 5

Date of your route : Sep 22, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

The route of the ridge section in pictures: https://www.youtube.com/watch?v=mrVKQ2ei...

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Wingardium
Wingardium

Overall rating : 4 / 5

Date of your route : Aug 26, 2021
Reliability of the description : Not used / Not applicable
Ease of following the route : Not used / Not applicable
Route interest : ★★★★☆ Good
Very busy route : Yes

The weather forecast predicted clear blue skies, but initially there were stormy clouds and fog on the ridges!
Apart from that, it was a beautiful, easy walk.
Much of it is in the woods, which is great in hot weather but limits the views. This is made up for later on the ridges overlooking the Drôme valley and the Col de Rousset road.
The steepest climb is between points (7) and (9).
Signage on the ground is sporadic. The Visorando app with the IGN map is a great help for finding your way around!

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78jefrle
78jefrle

Overall rating : 5 / 5

Date of your route : Aug 02, 2021
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Enjoy your walk!

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fredaldi
fredaldi

Overall rating : 4.7 / 5

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

A very beautiful walk with vulture watching.

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m30
m30

Overall rating : 4.3 / 5

Date of your route : Aug 21, 2019
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good

Lovely hike, beautiful view of the valley, lovely refuge at the Col de Vassieux
a magnificent day.
Recommended hike

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MICHELFIL
MICHELFIL

Overall rating : 4.3 / 5

Date of your route : Jul 22, 2019
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good

beautiful landscapes

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dju42
dju42

Overall rating : 5 / 5

Date of your route : Jun 16, 2019
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

Very well-written guide for a really nice hike—even though we didn't have the best weather. I'll do it again when the weather is better so I can enjoy the view . In my opinion, it's very doable with a family, with less elevation gain than indicated in the description. I recommend it!

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DESSINGER
DESSINGER

Overall rating : 5 / 5

Date of your route : Oct 05, 2018
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

A magnificent tour, which we did as a family. Thank you to the author

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patrick furminieux
patrick furminieux

Overall rating : 5 / 5

Date of your route : Sep 03, 2018
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

very precise route, magnificent view of the Diois region on the way back
no difficulty

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sourisseau057
sourisseau057

Overall rating : 5 / 5

Date of your route : Jun 29, 2018
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

An absolutely magnificent hike, done in two parts so we could sleep in the simply magical refuge. Thank you!

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