The Vallon Sourn in Gréoux-les-Bains

An unmarked walk through varied landscapes. You won’t get bored.

Details

20860221
Creation:
Last update:
Last review:
  • Walking
    Activity: Walking
  • ↔
    Distance: 5.63 km
  • ◔
    Average duration: 2h 20 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 243 m
  • ↘
    Descent: - 242 m

  • ▲
    Highest point: 566 m
  • ▼
    Lowest point: 333 m

Photos

Description of the walk

Easy parking in the car park on the left after the last buildings on the Route du Lac.

(S/E) Walk up the road for a good hundred metres and take the path that descends briefly to the right into the Ravin de la Vallée Obscure. Continue to a fork.

(1) Turn right, between two cairns beneath the broom, just before the stream bed crosses the path. Go round the rock on your right and climb up a steep, clear but little-used path.

(2) Climb over the rocks leading to the Vallon des Fragons and follow it up to the left. At the end of the valley, follow the path up to the left.

(3) When you reach the small pass, take the path on the left which passes above the ruins. Watch out for mountain bikes: they’ve made the track. Turn left onto the next path. After the steep climb, keep to the left. Enjoy the view as you pass the cross.

(4) At the end of the descent, turn left just before the track and head down the Vallon Sourn.

(1) Continue straight on to return to the car park (start/finish).

Waypoints

  1. S/E : km 0 - alt. 333 m - Car park on Route du Lac
  2. 1 : km 0.67 - alt. 368 m - Crossroads of the circular loop (cairns)
  3. 2 : km 0.89 - alt. 417 m - Crossing the rocks
  4. 3 : km 1.34 - alt. 450 m - Turn left at the fork, ruins
  5. 4 : km 3.37 - alt. 533 m - Turn left
  6. S/E : km 5.63 - alt. 333 m - Car park on Route du Lac

Notes

The spindle tree is beautiful but prickly. Protect your legs. GPS essential.

Worth a visit

The Fragons valley with its unique biotope.
The view from the cross.
The boxwood tunnel in Vallon Sourn.

Reviews and comments

3.4 / 5
Based on 6 reviews

Reliability of the description
3.5 / 5
Ease of following the route
3.2 / 5
Route interest
3.5 / 5
Denis26
Denis26 ★

Thank you for your feedback; I’ve just changed the difficulty level from ‘easy’ to ‘medium’.

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VTRP
VTRP
• Edited:

Overall rating : 3.7 / 5

Date of your route : Apr 08, 2026
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★☆ Good
Very busy route : No

A very shaded and interesting hike for exploring the region’s characteristic flora and terrain, with some lovely views of the surrounding landscape. It does, however, require a bit of fitness, good walking boots and a reliable GPS (the Visorando app works very well).
In fact, the main difficulty lies in the section between points 1 and 2. Finding the start at point 1 already requires careful attention, as the cairns are tiny, and, subsequently, the trail is far from obvious, despite a few small cairns, which demands a good understanding of the terrain. The passage over the rocky ridge at point 2 via the gap shown in photo 1 isn’t very obvious either: it’s located more to the right (east) of the ridge, near a flat section of the ridge. A little further on, after the cliff shown in photo 2, on the cleared ledge, do not stray from the rocky ridge until the path becomes clear as it climbs to the left. At point 3, the ruin marked and shown in photo 3 is located about twenty metres after taking the path. And the cross mentioned next, which is not marked on the map, is in fact located at an altitude of 514.
If I were to do this hike again, I would start 250 m further down the road (at a place called La Buissière), turning right (east) onto the wide track leading to the antennas at an altitude of 438. Before reaching it, at the hairpin bend that heads off to the right (altitude 427), I would take a path to the left (east) that leads to point 3 of the route, from which point the route presents no further difficulties. Much less adrenaline, but much more peace and quiet...

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User 15216549

Overall rating : 2 / 5

Date of your route : Sep 12, 2025
Reliability of the description : ★★☆☆☆ Disappointing
Ease of following the route : ★★☆☆☆ Disappointing
Route interest : ★★☆☆☆ Disappointing
Very busy route : No

When I was 60, I might have found this hike easy. Now that's no longer the case... And if you knew what my partner thought of it!!! Gréoux is frequented by many retirees... Please review your assessment.

The route from point 1 to point 2 is really tricky. Fortunately, the GPS track is reliable because the path is non-existent. I understand why some people chose to give up.

Apart from the viewpoint at the summit (La Croix) and the boxwood "tunnel", this hike is of little interest.

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killianjmk
killianjmk

Overall rating : 2.3 / 5

Date of your route : Nov 26, 2023
Reliability of the description : ★★☆☆☆ Disappointing
Ease of following the route : ★★☆☆☆ Disappointing
Route interest : ★★★☆☆ Average
Very busy route : No

We went on this walk yesterday afternoon. Nature seems to have reclaimed its territory, and the path is more or less impassable, hidden by fallen leaves. In short, at point 2 we were forced to turn back.

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jbb0201
jbb0201
• Edited:

Overall rating : 4 / 5

Date of your route : Aug 13, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

This walk, which takes about two hours, takes you through an area well sheltered from the sun.
Not particularly scenic, but an easy trail that climbs gently, making it accessible to most people. A good walk to get back into shape.
The description (details) is a bit vague, but with the IGN map you’ll find your way quickly.
In summary: we really enjoyed this walk

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glaciers
glaciers

Overall rating : 3.3 / 5

Date of your route : Nov 02, 2022
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★☆☆ Average
Very busy route : No

Sorry, we didn’t particularly enjoy this hike.
Please note that you need to be very careful at point 1 to spot the two small cairns.
The climb that follows, along a narrow path, isn’t easy to follow.
We did enjoy the view from La Croix and the charm of Vallon Sourn.
Thanks to the author for sharing...

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hpa
hpa

Overall rating : 5 / 5

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

We’ve discovered this lovely new route up to the cross

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