But Saint-Genix - Col de Vassieux - But de l'Aiglette

The Cols de Vassieux offer breathtaking views of the Marignac en Diois valley, Die, the Col du Rousset, the Glandasse, the Grand Veymont and the entire chain up to the Pic Saint-Michel above Villard-de-Lans and the Chironne rocks. Breathtaking ravines, flowers and butterflies everywhere, a marvel and, as a bonus, the passage of griffon vultures reintroduced to the region!

Details

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  • Walking
    Activity: Walking
  • ↔
    Distance: 16.61 km
  • ◔
    Average duration: 6h 45 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 714 m
  • ↘
    Descent: - 711 m

  • ▲
    Highest point: 1,639 m
  • ▼
    Lowest point: 1,237 m

Photos

Description of the walk

Access: go to Vassieux and continue to the Museum of Prehistory, then drive straight up (towards Col de Vassieux) to Espeline. Park on the right, in the large clearing at the top of the hill.

(S/E) Take the track on the right (west) towards But Saint-Genix.

(1) Turn left onto the track in Combe de Gaza, go through the hairpin bend and follow the forest track on the right until you reach the ridge (sign slightly hidden).

(2) Turn left 180°. Once on the ridge, follow it, pass the Trou de la Fille and reach the Pas Bouillanain.

(3) At the pass, there is a wide view of Saint-Julien-en-Quint below. On the right is the Fond d'Urle plateau, opposite is the Ambel plateau, and in the background is the Roc de Toulaud.
Continue straight ahead through the forest. Be careful at an intersection, as theGR® trail changes direction (do not go straight ahead). Follow the yellow and green markings, climb steeply to the right until you reach a field of yellow gentians, and arrive at Pas Florent.

(4) You can clearly see the climb ahead of you to reach the summit of But Saint-Genix (1,640 m).
Turn around to admire the Grand Veymont and the mountain range as far as Villard-de-Lans. Continue straight ahead to the summit.

(5) At the summit, enjoy a 360° view of the Trois Becs opposite and the entire Diois valley!
Descend steeply to the left towards the Col de la Chau.

(6) Continue towards Entrecol (refuge a little further down), then towards the Col de Vassieux.

(7) Take the time to look down towards Marignac; the trail descends immediately below the sign.
Then climb back up through the woods towards the But de l'Aiglette. The climb is a little steep (watch out for vultures). Continue to reach the edge of the cliff, still climbing, but what a view at the top, breathtaking, the cliff is very jagged, with fantastic views through the rocks of the Aiglette, and continue a little further to the summit at 1,561 metres: view of the Rochers de Chironne above Chamaloc, opposite the Col du Rousset, and to the left the Col de Chironne.

(8) Descend to the Col de Vassieux by retracing your steps, following the signs for Espeline.

(7) At the Col de Vassieux, turn right onto a path, then take an old road to the crossroads, where you turn left onto theGR® marked trail.

(9) At the Baraque Forestière du Plainet, continue along the road on the right for 500 m and, at a bend, turn right onto the forest track (sign on the left of the road) towards Vassieux. This well-used logging track leads down a long descent to another crossroads.

(10) Take the road on the left (ignore the one on the right), pass the wooden hut on your right, take the main road opposite which joins the road a little further on, and you will return to Espeline (S/E).

Waypoints

  1. S/E : km 0 - alt. 1,248 m - Parking on the right, at the top of Espeline
  2. 1 : km 0.57 - alt. 1,291 m - Turn left onto the track in the Combe de Gaza
  3. 2 : km 2.66 - alt. 1,421 m - Turn left at the 180° bend
  4. 3 : km 4.56 - alt. 1,444 m - Pas Bouillanain
  5. 4 : km 5.64 - alt. 1,541 m - Pas Florent
  6. 5 : km 6.56 - alt. 1,636 m - Destination: Saint-Genix
  7. 6 : km 7.69 - alt. 1,429 m - Col de la chau (1434m)
  8. 7 : km 8.87 - alt. 1,334 m - Col de Vassieux (1333m)
  9. 8 : km 10.54 - alt. 1,537 m - But de l'Aiglette
  10. 9 : km 13.69 - alt. 1,332 m - Plainet Forest Hut
  11. 10 : km 15.92 - alt. 1,243 m - Crossroads
  12. S/E : km 16.61 - alt. 1,249 m - Parking in Espeline

Notes

This hike is a slightly shorter version of one that goes all the way around the Cols de Vassieux.

The hike is moderate at first, then difficult on the climb to the But de l'Aiglette, and given the length.

Bring plenty to drink, as there are no water sources.

If you set off, don't forget your IGN map, as there are many possible variations depending on your energy levels and the time available!

Worth a visit

Vassieux, the prehistory museum and the resistance museum.

Cheese and local produce, the Vercors chapel nearby, the Luire cave, the white drovers' road.

A surprise may await us: vultures! We counted up to nine of them

Always be cautious and plan ahead when you're outdoors. Visorando and the author of this route cannot be held responsible for any accidents occurring on this route.

The GR® and PR® markings are the intellectual property of the Fédération Française de Randonnée Pédestre.

Reviews and comments

4.9 / 5
Based on 41 reviews

Reliability of the description
4.8 / 5
Ease of following the route
4.8 / 5
Route interest
4.9 / 5
Sandrine M1.
Sandrine M1.

Overall rating : 5 / 5

Date of your route : Aug 04, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A very pleasant walk with magnificent scenery!

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User 1123056

Overall rating : 5 / 5

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

A beautiful hike, unforgettable, especially as we were able to observe ibexes below the cliff face beneath the ridge leading to the destination of Saint-Genix.

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Yvesjacq
Yvesjacq

Overall rating : 4 / 5

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

A very beautiful hike with an exceptional view from the summit. We saw many vultures.

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sempervivum
sempervivum
• Edited:

Overall rating : 5 / 5

Date of your route : Feb 02, 2025
Reliability of the description : Not used / Not applicable
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Snowshoe hike, using GPS. Departure from the Prehistory Museum, as the road leading to the car park was not cleared of snow, which added 2 km to the round trip. Beautiful ridge trail with unobstructed views of the Diois region, which remains relatively unknown, with few people out on this beautiful Sunday. Numerous tracks of small and large game

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la ferme
la ferme

Overall rating : 5 / 5

Date of your route : Jul 25, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A beautiful hike with no major difficulties, mostly shaded with beautiful views.

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nath3863
nath3863

Overall rating : 5 / 5

Date of your route : Jul 13, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

very nice hike – no major difficulties – we loved it

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naisvedo
naisvedo

Overall rating : 5 / 5

Date of your route : Jun 24, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

a beautiful hike along trails that remind you of the dark history of these places

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Bebert34130
Bebert34130

Overall rating : 5 / 5

Date of your route : Jun 24, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A beautiful hike with favourable weather conditions

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delph07410
delph07410

Overall rating : 5 / 5

Date of your route : Aug 15, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Very beautiful hike, magnificent views!

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Zoxence
Zoxence

Overall rating : 5 / 5

Date of your route : Jul 17, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

Hike done in beautiful weather, magnificent views, and we were lucky enough to spot a doe and a young stag in the woods, then some vultures near the Saint Genix hill

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nicdlagomme
nicdlagomme

Overall rating : 5 / 5

Date of your route : May 27, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Excellent hike with magnificent scenery.
took 6 hours including a lunch break, drone shots and a botanical walk.
the climb up to the Col de l'Aiguillette is difficult but well worth the effort
the only downside: access to the car park. The road has ruts for rainwater drainage.
avoid low-clearance vehicles. Feasible in a van or small motorhome

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BALADEAUBERT
BALADEAUBERT

Overall rating : 5 / 5

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

Excellent hike that took place without wind, with beautiful sunny spells; almost ideal conditions.
We can only echo the previous comments: this hike is well worth experiencing.
The view from the summit of the But de Saint Genix is truly worth its weight in gold, provided the weather is good, of course.
A hike to recommend, and one we will do again.

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smallaxe
smallaxe

Overall rating : 4.7 / 5

Date of your route : Jul 22, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : Yes

a very beautiful hike, most of which is in the shade, at least until you reach the But de Genix.
From here, you can enjoy a 360° view of the Ambel plateau, the Tauleau rock and Font d'Urle.
From there, you descend to the ridge, pass through three passes and climb back up to the But de l'Aiglette, which is a little steep but not difficult. Here you can admire the Marignac valley, the rocks of Chironne and Chamaloc, and part of the Col de Rousset.
Griffon vultures circle in the sky. There is always wind on the ridges.
The return journey is a little more monotonous along the forest paths and roads, but you are left with beautiful images of a very pleasant walk.
Highly recommended.
I forgot to mention the view of the Grand Veymont, the highest point of the Vercors in the Drôme

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Schmill07
Schmill07

Overall rating : 5 / 5

Date of your route : May 16, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A very beautiful hike with magnificent views. No difficulty except for the length.

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cricri2356
cricri2356

Overall rating : 5 / 5

Date of your route : Sep 30, 2021
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Superb hike...
I was alone and didn't meet many people

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