Sumiou Mountain and Lure Ridge

Circular ridge walk in the Jabron valley on the Montagne de Sumiou and on the eastern side of the Montagne de Lure.
Pass through the small rock-cut chapel of Saint-Pons on the cliff face.
Magnificent views on a clear day of the Écrins, the Dévoluy (Bure plateau), the Vercors and the Diois.

Details

1268766
Creation:
Last update:
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  • Walking
    Activity: Walking
  • ↔
    Distance: 31.07 km
  • ◔
    Duration according to the author: 7 hrs 
  • ▲
    Difficulty: Very difficult

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 1,779 m
  • ↘
    Descent: - 1,770 m

  • ▲
    Highest point: 1,652 m
  • ▼
    Lowest point: 557 m

Photos

Description of the walk

Access:

  • From Sisteron, leave the town via the D53 (Avenue Jean Moulin) and continue right onto the D943 towards Noyers-sur-Jabron. After approximately 4.5 km, turn left onto the D53 towards Valbelle / Montagne de Lure, crossing the bridge. Park at the entrance to the hamlet of Les Richauds (parking on the left below the town hall)
  • From Montbrun-les-Bains / Séderon, drive down the Jabron valley via the D943. Pass through Les Omergues, Montfroc, Saint-Vincent-sur-Jabron and then Noyers-sur-Jabron in turn. Then turn right onto the D53 towards Valbelle / Montagne de Lure, crossing the bridge. Park at the entrance to the hamlet of Les Richauds (parking on the left below the town hall)

(S/E) From the car park, look for the wooden marker post at the junction of the D53 and the small access road to the hamlet of Les Richauds.
Facing the signpost, turn right towards Chapelle Saint-Pons and Pas de Jean Richaud, following theGR®6. White/red markings.
Walk up through the small hamlet, quickly passing the town hall on your right, and leave the hamlet via a track suitable for vehicles.

(1) After about 500m, pass a wayside shrine and continue straight on at the junction. Follow Chemin de Sara, Chapelle Saint-Pons, Pas de Jean Richaud. Continue on theGR®6. White/red markings.
After 75m, theGR® turns right and becomes a footpath.

(2) Pass the signpost for the junction to Chapelle Saint-Honoré. Turn left and make a return trip to the chapel.
Then, continue straight on along the slightly ascendingGR ®.

(3) After about 500m, you’ll reach a fork. Take the path on the right, which leads into the woodland towards the Chapelle Saint-Pons. Yellow markings.
The path climbs more steeply quite quickly, emerging from the woodland and approaching the rock face.
It then climbs through rocky terrain. A small stone bridge leads to the chapel’s platform. This offers a beautiful view of the surrounding valley.

(4) Continue behind the chapel. You will soon come to a cave on the left (Trou de Saint-Pons), which opens out on the other side of the cliff (the first section is quite narrow to access) and offers a beautiful view. Turn back after visiting.

Go round the cliff following the path, keeping close to the rock face at the start. The path then descends, passing several climbing routes (the names of the routes are painted on various rocks).
When the path begins to veer right as it descends, look out for a small cairn on the left with a blue dot painted on a rock, partly faded.
Climb slightly to the left and you will soon reach a first small ledge in a fissure.

This is equipped with old, narrow footholds, set into the rock to help you cross.
You will then reach the foot of a slightly exposed ascending ledge, equipped with a handrail (check the condition of the rope before using it).
This ledge leads to a second ledge, equipped with an unsecured metal cable. Reach the top of the cliff through small box trees and broom.

(5) You will then emerge onto a grassy track; continue to the right to descend.

(6) After about 850m, at the fork in a wide track, continue to the right on theGR®6. White/red markings.
Then, after 75m, leave the wide track by turning right onto the crossing path, at the start of the tall vegetation. Follow the wooden sign “Chemin de Sara” and stay on theGR®6, marked with white and red.

(7) After 450m, you’ll come out onto the D53 (access road to Montagne de Lure) and continue right towards Jas des Bailles. Follow the road for 100m.
When you reach the Saint-Robert car park, turn right towards the Grotte des Peyrourets (wooden sign). Stay on theGR®6.

At the fork that appears shortly after 200m, continue to the right towards the Grotte des Peyrourets (wooden sign). Yellow markings. Cross a riverbed (water may be present) and continue straight ahead. The path then climbs.

(8) On the flat section, turn left towards Montagne de Sumiou, marked with yellow signs. You will soon cross a path on the right heading towards Valbelle; continue straight ahead. The path (wide track) climbs in wide hairpin bends to reach the eastern ridge of Montagne de Sumiou, marked with yellow signs.
After the final hairpin bend, continue straight on towards the west along the grassy track.

(9) After 600m, at the fork, turn right. Take the track heading north; there are no markings.
After 200m, at the cairn, continue to the right and cross the small clearing. A cairn is visible 50m away at the edge of the woods on the left. Head towards it.
At the cairn, continue to the left then descend through the undergrowth along the visible path. The path leads to the Grotte des Peyrourets.

Pass the viewpoint on the right. Continue down the fairly steep and slippery path in places, scrambling down small rocks. The path then turns left (west), hugging the rock face. Access to the cave requires climbing over a small rocky ledge (2m).

(10) After visiting the cave, head back up the path. At the edge of the small clearing, rejoin the path you took on the way there and continue to the right along the grassy track. This track ends abruptly. Continue westwards for about 200m through the sparse vegetation. There are a few scattered cairns.

(11) Then turn south (to the left) to reach the ‘bare’ section of Montagne de Sumiou.
Continue eastwards along the western ridge and follow it for about 900 metres. A few cairns are visible, some of which are painted green in places.

(12) When you reach an altitude of 1,300 metres, head diagonally left (south-east) and look for the cairn-marked path. There is fluorescent green paint.
After 200m, you’ll come out onto an old grassy track. Follow this to the right and continue descending.

(13) After about 700m, cross a good, passable track. Turn right onto this track to continue the descent. Yellow markings.

(14) Cross theGR®946, follow it straight on towards Jas de Madame along the good track. White/red markings.
After 200m, at the fork in the track, turn right onto theGR®946.
Then, after about 700m, continue straight on towards Jas de Madame on theGR®946. Ignore the path branching off to the left. White/red markings. At the next fork, located after Jas de Madame, turn left onto theGR®946.

(15) You will come to a large junction of tracks. Turn left towards Pas de la Graille via theGR®6on the forest track. White/red markings.
After 200m, leave the forest track and continue on theGR®6to the right. The track narrows and climbs more steeply.
You will cross the D53 road three times. Continue along theGR®6, following the track which runs almost straight ahead. Below the Pas de la Graille, the gradient becomes very steep.

(16) At the “Pas de la Graille” sign, continue left towards the Pas de la Croix. Then take theGRP® Tour de la Montagne de Lure. Yellow/red markings. Start following the eastern ridges of the Montagne de Lure.

(17) At the “Cairn 2000” sign, continue straight on towards the Pas Jean Richaud.GRP® Tour de la Montagne de Lure, yellow/red markings.

(18) Pass the “Pas de la Croix” and continue along the ridges heading east. Carry on straight ahead on the GRP®.

(19) At the “Jean Richaud” sign, turn left towards Valbelle. Descend through the forest via a series of hairpin bends.GRP® Tour de la Montagne de Lure, yellow/red markings (route deviation on the map).

(20) When you reach a crossroads of tracks, take the second on the left. Stay on theGRP® Tour de la Montagne de Lure, yellow/red markings, and continue downhill.

(21) At the bottom of the descent, you’ll reach the D53 county road. Turn left and continue along this road for about 300m. Yellow/red markings.

(7) Turn right onto the path, following theGR®6. White/red markings.
You will come out onto the track again, then continue straight ahead.

(6) At the fork that appears shortly afterwards, leave the route taken on the way there to your left and continue to the right, staying on theGR®6. White/red markings.

(3) After 2.7 km on theGR®6, you will cross the path leading to the Chapelle Saint-Pons.
Continue straight down towards Valbelle. Stay on theGR®6. White/red markings.

(2) Then, after 500m, pass the signpost for the junction to the Chapelle Saint-Honoré. Continue straight on along theGR®6as you descend.

(1) Pass the oratory again. Continue straight on theGR®6towards Valbelle until you reach the car park (S/E).

Waypoints

  1. S/E : km 0 - alt. 557 m - Les Richaud hamlet
  2. 1 : km 0.53 - alt. 583 m - Oratory
  3. 2 : km 1.07 - alt. 643 m - Saint-Honoré Chapel
  4. 3 : km 1.56 - alt. 670 m - Turn right at the fork, through the undergrowth
  5. 4 : km 2.46 - alt. 894 m - Saint-Pons Chapel
  6. 5 : km 3 - alt. 949 m - Grassy track, straight
  7. 6 : km 3.87 - alt. 860 m - Ponchette
  8. 7 : km 4.54 - alt. 908 m - D53, right
  9. 8 : km 6.1 - alt. 1,056 m - Flat section, left
  10. 9 : km 8.22 - alt. 1,249 m - Right fork
  11. 10 : km 8.9 - alt. 1,236 m - Peyrourets Cave
  12. 11 : km 10.36 - alt. 1,348 m - Turn left towards the south
  13. 12 : km 11.47 - alt. 1,299 m - To the left, south-east
  14. 13 : km 12.49 - alt. 1,221 m - Track to the right
  15. 14 : km 14 - alt. 1,113 m - Junction with the GR946
  16. 15 : km 15.65 - alt. 1,124 m - Crossroads of trackable paths
  17. 16 : km 18.38 - alt. 1,597 m - Pas de la Graille (1599m)
  18. 17 : km 20.4 - alt. 1,592 m - Cairn 2000
  19. 18 : km 21.06 - alt. 1,501 m - Pas de la Croix (1504m)
  20. 19 : km 22.82 - alt. 1,433 m - Pas de Jean Richaud (1435m)
  21. 20 : km 24.64 - alt. 1,013 m - Crossroads of trails
  22. 21 : km 25.67 - alt. 892 m - D53, left
  23. S/E : km 31.07 - alt. 557 m - Les Richaud hamlet

Notes

No water source.
Head torch required to access the caves.

Worth a visit

(2) Saint-Honoré Chapel
(4) Saint-Pons Chapel
Saint-Pons Hole after (4)
(10) Peyrourets Cave

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

4.5 / 5
Based on 5 reviews

Reliability of the description
4.6 / 5
Ease of following the route
4 / 5
Route interest
5 / 5
tscaumont
tscaumont

Overall rating : 5 / 5

Date of your route : May 13, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A wonderful hike; you have to search a bit for the path after St Pons Chapel, but the climbing section is very well equipped.

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kevin1575
kevin1575

Overall rating : 4.7 / 5

Date of your route : Aug 16, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A superb two-day hike over the long weekend of 15 August! We camped at Jas de Madame.
I can confirm that it is slightly difficult to find the sections requiring climbing.
This hike is reserved for experienced hikers due to its technical nature around the Trou de Saint Pons.

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Lisoupierrot
Lisoupierrot

Overall rating : 4 / 5

Date of your route : Oct 03, 2021
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Very busy route : No

A lovely hike. However, we struggled to find the climbing section and had a few close shaves. We completed the hike over two days and had no trouble finding a place to camp (don’t expect to find a spot once you’ve started the ascent of La Lure!). Apart from the first section, the path was easy to follow!

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stefaix
stefaix

Overall rating : 4.3 / 5

Date of your route : Jun 06, 2020
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

Stunning panoramic views of the Écrins and the Dévoluy from the Sumiou and the ridges of the Montagne de Lure. A hike across a wide variety of terrain.

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bragrix
bragrix

Overall rating : 4.7 / 5

Date of your route : Oct 11, 2019
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good

Hello,
To me, the line on the map looks a bit too thick. Otherwise, it’s a superb hike; however, I didn’t take the aerial route after the Saint Pons chapel as I was hiking alone.

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