Circular Grimone - Sucettes de Borne - Jiboui - Jocou

Author's note

  • Sorry: the circular described below is no longer possible due to the closure of the trail between points (13) and (15) (see message from May 2023).

A superb circular in the isolated islet of south-eastern Vercors, on the border between Drôme and Isère. The route combines the geological curiosity of the Sucettes de Borne, the flowers and wide open spaces of the Jiboui mountain pastures, and a long route along grassy ridges crowned by the Jocou, with extraordinary panoramic views.

Details

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  • Walking
    Activity: Walking
  • ↔
    Distance: 18.90 km
  • ◔
    Average duration: 8h 50 
  • ▲
    Difficulty: Difficult

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 1,215 m
  • ↘
    Descent: - 1,212 m

  • ▲
    Highest point: 2,047 m
  • ▼
    Lowest point: 1,048 m

Photos

Description of the walk

Car park on the edge of the D539 in a bend between Grimone and the Col de Grimone.

The route on the ground is well marked, with numerous directional posts and markings.

(S/E) Follow the road (D539) downhill for 1 km until you reach a hairpin bend.

(1) Leave the road, do not take the wide path on the right but the small path below which joins the path from Grimone 100 m further on, which you follow to the right.

Yellow-green markings

(2) Cross the path and take the trail on the right that runs alongside the trees and joins a path 500 metres further on.

(3) Head straight ahead towards "Sucettes de Borne", staying on the main path.

(4) At a crossroads, turn left and follow "Sucettes de Borne". Continue for a good kilometre until you reach a crossroads.

(5) Do not take the path that descends to the left towards Glandage. Continue right for 200 metres on the forest track.

(6) At the Piégu signpost, take the path that descends to the left towards "Sucettes de Borne".

(7) When you reach the Gué crossroads, take the path down to the left towards "Sucettes de Borne". Continue down the path for 400 metres after the Sucettes, until you reach the impressive rocks downstream.

(8) Turn around and walk back up to Le Gué.

(7) Cross over and continue straight ahead. At the crossroads 200 m further up, turn left towards "Col de Jiboui". Shortly after crossing the stream, on a right-hand bend, the route leaves the path and climbs up, cutting across the bends via a shorter trail.

(9) When you reach the Refuge et Lodge d'Alpage de la Tour, remember to fill up with water. Climb up the path towards "Col de Jiboui". At the crossroads 500 m further on, leave the paths and take the path opposite, which climbs steeply and joins a crossroads at Col de Jiboui.

(10) Continue to the right towards "Crête de Jiboui".

Yellow (GTV) + red and white (GR®93thenGR®93variant) markings

(11) On the ridges, follow the ridge path to the right towards "Le Jocou".

(12) Curiously, the trail leaves the ridges and takes a new, less convenient route, sloping upwards a few dozen metres above the old one. Why?

(13) At Col de Seysse, turn left onto the GTV towards "Le Jocou".

(14) At the "Sentier à brebis" sign, turn right onto the steep path: climb up the path on the small rocky ridge to the right of the ravine and join the Crête de l'Archat.

(15) Turn right towards "Le Jocou" to reach its summit.

(16) Continue straight ahead towards "Col de Grimone". 300 metres after the hut, there is a small cairn: the path leaves the ridge, turning left towards Col Pigeon.

(17) Passage at the Vente-Cul pass.

(18) Leave theGR®93. Take the GTV on the left, which is not very visible until you reach the small wooden marker 20 m away. At Col de Vente-Cul, descend to the drinking troughs, then along the edge of the Jocou national forest, on the right bank of the ravine, to the Côte des Amousière post.

Red-white markings (GR®93variant) thenGR®93

(19) Continue straight ahead towards "Col de Grimone". At the next two intersections, turn left to return to the road and the car park (S/E).

Waypoints

  1. S/E : km 0 - alt. 1,291 m - Car park 1 km from the - Col de Grimone
  2. 1 : km 1.31 - alt. 1,206 m - Hairpin bend on the D539
  3. 2 : km 1.73 - alt. 1,222 m - Crossing the path
  4. 3 : km 2.32 - alt. 1,308 m - Ravin de Clastre (directional signpost)
  5. 4 : km 3.84 - alt. 1,314 m - Directional signpost
  6. 5 : km 5.02 - alt. 1,301 m - Direction signpost - Col de la Péyère (1293m)
  7. 6 : km 5.22 - alt. 1,303 m - Piégu (signpost)
  8. 7 : km 6.19 - alt. 1,159 m - Le Gué (signpost)
  9. 8 : km 7.15 - alt. 1,048 m - Remarkable rocks
  10. 9 : km 9.21 - alt. 1,332 m - Gîte d'Alpage de la Tour de Borne (1340m)
  11. 10 : km 11.03 - alt. 1,624 m - Direction signpost - Col de Jiboui (1619m)
  12. 11 : km 11.86 - alt. 1,728 m - Crête de Jiboui (signpost)
  13. 12 : km 13.28 - alt. 1,709 m - "Path closed" sign
  14. 13 : km 13.89 - alt. 1,744 m - Direction signpost - Col de Seysse (1744m)
  15. 14 : km 14.25 - alt. 1,819 m - Sign: "Sheep trail"
  16. 15 : km 14.59 - alt. 1,988 m - Crête de l'Archat (signpost)
  17. 16 : km 15.48 - alt. 2,047 m - Le Jocou (signpost)
  18. 17 : km 16.59 - alt. 1,835 m - Direction signposts and markers - Col Pigeon (1835m)
  19. 18 : km 17.36 - alt. 1,645 m - Col Vente-Cul (1650m)
  20. 19 : km 18.1 - alt. 1,460 m - Côte des Amousière (signpost)
  21. S/E : km 18.9 - alt. 1,291 m - Car park at the start

Notes

It is possible to complete the circular over two days, spending a night at the Refuge et Lodge d'Alpage de la Tour.

Water source: on the route: high-flow fountain (in June 2015) at the Refuge et Lodge d'Alpage de la Tour

- Difficulty: hike on well-marked trails, without great technical difficulty, but a long hike with a lot of elevation gain (hence the "Difficult" rating).

Wind: the ridge section, from (11) to (19), can be particularly windy. The route also passes through the aptly named Col de Vente-Cul (Wind-Buttock Pass). Long-sleeved clothing is highly recommended. It is preferable to walk the circular in this direction on days when the Mistral wind is blowing, so that you have the wind at your back rather than in your face.

- Season: June is ideal for enjoying the flowers of Jiboui. Sheep and sheepdogs usually arrive at the summer pastures in mid-June. The ridge section of the route climbs to an altitude of 2,051 metres, in very windy areas. How long do the snowdrifts and snowfields last? Until the end of April? May?

- Narrow paths from (3) to (6), with some broom and boxwood brushing against your legs and arms.

Worth a visit

- The Sucettes de Borne and the impressive rocks downstream.

- Col, mountain pastures and ridge of Jiboui.

- Mont Barral (1,903 m), an additional 1 hour round trip from the Jiboui ridge (1,731 m).

- From the Jiboui ridge (11) to (19), a succession of magnificent views over the southern Vercors, Trièves, Dévoluy, etc.

- Le Jocou (2,051 m), the icing on the cake.

- At the end of the route, from the watering hole to the road, for lovers of engineering structures, in the ravine bed, a series of small stone "arch dams" built to combat erosion.

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 9 reviews

Reliability of the description
4.9 / 5
Ease of following the route
4.9 / 5
Route interest
5 / 5
hbhaubert
hbhaubert

Overall rating : 4.7 / 5

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

A magnificent hike that can only be done when the herds are not in the mountain pastures. Several variations are possible on the ridges for the more adventurous, but be sure to save some energy for the challenging climb up Jocou.

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Jopo
Jopo

Thank you, Bruno, for this very useful information.
I haven't deleted this hike, but I've added your information at the very beginning of the description.
Best regards

Jopo

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bruno.peyrichou@freesbee.fr
bruno.peyrichou@freesbee.fr

Overall rating : 5 / 5

Date of your route : May 09, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Please note: this hike is no longer possible: the trail has been removed between the Seysse Pass and the Crête de Lachat (passage prohibited without detour) between points 13 and 15. Outside of the season, you can brave the ban and walk this unmarked section, but from 15 June to 15 October, there is a closed sheep park and you risk becoming a meal for the Patoux.
So from point 13, return directly to the start without going via the Jocou.
The Joucou is only possible as a round trip or return via the Crêtes des Glaisettes.

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greggy26
greggy26

Overall rating : 5 / 5

Date of your route : Jun 25, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Quite a challenging hike, but with sublime landscapes and panoramic views
I varied the route at the Col de Jiboui to climb Mont Barral (3 km round trip) Difficult section after the Jiboui ridges
Beautiful view of Glandasse, Grand Veymont and Le Dévoluy

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Magali N
Magali N

Overall rating : 4.7 / 5

Date of your route : Sep 24, 2019
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

15 9 19 / Please note that the summit of Jiboui is not accessible, contrary to the indications on site regarding the GR detour (GR which passes through the enclosure) for herds: on this detour, there are two herds with only one fence separating them and no possibility for hikers to pass through. We were forced to descend into the valley at an altitude of 1711 metres along the stream to rejoin the GR due to four ill-behaved sheepdogs.
Other information: the fountain at the Tour refuge is dripping at the end of this very dry summer. The association that manages the refuge is very friendly. I recommend stopping at the refuge on this beautiful circular to enjoy the day and finish the next day at noon.

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Thy07
Thy07

Overall rating : 5 / 5

Date of your route : Oct 03, 2018
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : Not used / Not applicable

Thank you, Jopo, for your kind message.

In fact, I shortened the route you suggested because the weather forecast was poor for the afternoon, and I didn't escape a heavy downpour around 3 p.m.
So I went "directly" up the GR93 from La Pouyat towards the Col de Seysse. That's where I met the welcoming committee, while the herd was below near the Cabane des Pâtres. From the pass, I planned to reach Jocou via the GR93 variant, then the Pigeon and Vente-Cul passes, but I had no choice: I had to return via the same path I had taken on the way up.
I plan to enjoy this circular as proposed next spring, in May, before the herds return to the mountain pastures.

Happy hiking!

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Jopo
Jopo

Hello,

I'm glad it wasn't serious, but this kind of incident is upsetting and very unpleasant.

The Tour de Borne mountain lodge (10) is a place where sheep are kept and probably serves as accommodation for the shepherd(s). Was the herd in question based there? The upper part of the hike, from Jiboui (11) to the Col de Vente-Cul (18), consists of beautiful mountain pastures. It is possible to encounter a herd there. It is not normal to be attacked there.

You did the right thing in notifying the mayor and the police.

Good luck

Jopo

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Thy07
Thy07

Overall rating : 5 / 5

Date of your route : Sep 30, 2018
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : Not used / Not applicable

PLEASE NOTE
Hike completed on Sunday, 30/09/2018. When you arrive at the Seysse Pass, you must go through a gate at the signposts to take the path that climbs up to Joucou (point 14 in the description).
There, I was literally attacked by three sheepdogs even though the trail was taking me away from the flock. A very aggressive white dog bit me three times (hip, elbow, buttock), fortunately without serious injury. But I was forced to turn back and descend via the GR93.
So be careful.
The incident was reported to the police and the Mayor of Glandage.

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gerard mounier
gerard mounier

Overall rating : 5 / 5

Date of your route : May 29, 2017
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

Very beautiful parish-specific to Brittany hike, perfect weather

Thank you

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christianplanchon@yahoo.fr
christianplanchon@yahoo.fr

Overall rating : 5 / 5

Date of your route : May 21, 2016
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

I was able to complete the entire tour for the first time. It is truly magnificent and there were no issues with the route. Thank you.

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christianplanchon@yahoo.fr
christianplanchon@yahoo.fr

Overall rating : 5 / 5

Date of your route : Aug 02, 2015
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

Hello
I only did part of the hike, namely: Grimone - Col de Lachau - Sucettes de Borne - Piegu - Grimone.
Everything was perfect.
However, I saw on another map that you could take a shortcut on the descent from the Lachau Pass to reach Le Gué. I don't know if this is true.
Many thanks
Kind regards
Christian Planchon

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