Pierre Mesure from Saint-Pierre-de-Chartreuse

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A walk along a wooded slope leading to old meadows; discover Carthusian architecture.

Details

n°23876871
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Last update:
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  • Walking
    Activity: Walking
  • ↔
    Distance: 5.16 mi
  • ◔
    Average duration: 3h 25 
  • ▲
    Difficulty: Moderate
  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 1,204 ft
  • ↘
    Descent: - 1,198 ft
  • ▲
    Highest point: 3,773 ft
  • ▼
    Lowest point: 2,598 ft
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Description of the walk

Start from the car park at La Diat next to the swimming pool.

(S/E) Join the main road and take the path climbing to the left. You’ll soon reach the road; follow it to the left as far as the Val Ombré lodge.

(1) Turn right between the car park and the building towards Le Charmant Som. Enter the woodland and reach a fork at the Fontaine de Frettevieille.

(2) Continue straight on to Les Granges de Pleynan.

(3) Turn left as you go downhill and reach the hamlet of Les Revols.

(4) On the road at the edge of the hamlet, turn right and head for the start of a path on the left at the sharp right-hand bend.

(5) Follow this path (Chemin de Saint-Bruno on the map), cross a road and continue straight on downhill towards the hamlet of Les Marrons. Before reaching the hamlet, join the D152 which climbs to the Col de Porte (take care!).

(6) Follow this road uphill and, on leaving the hamlet of Les Marrons, after the campsite, ignore the dead end and take the road on the left towards the hamlet of La Martinière.

(7) At the entrance to this hamlet, turn right, then at the tight right-hand bend, take the path on the left. This leads to a meadow; cross it (snowshoe markings) then descend via a series of hairpin bends to reach the site of La Diat. Continue straight on to reach the swimming pool car park (S/E).

Waypoints

  1. S/E : mi 0 - alt. 2,605 ft - La Diat car park - Guiers (rivière)
  2. 1 : mi 0.43 - alt. 2,841 ft - Le Val Ombré lodge
  3. 2 : mi 1.31 - alt. 3,471 ft - Fontaine de Frettevieille
  4. 3 : mi 1.89 - alt. 3,773 ft - Granges de Pleynan
  5. 4 : mi 2.55 - alt. 3,570 ft - Les Revols
  6. 5 : mi 2.79 - alt. 3,514 ft - Path on the left
  7. 6 : mi 3.7 - alt. 2,995 ft - Route du Col de Porte (D152)
  8. 7 : mi 4.24 - alt. 2,894 ft - La Martinière hamlet
  9. S/E : mi 5.16 - alt. 2,605 ft - La Diat car park

Reviews and comments

4 / 5
Based on 5 reviews
Reliability of the description
3.8 / 5
Ease of following the route
3.6 / 5
Route interest
4.6 / 5
tinouninon73
tinouninon73

Overall rating : 3.7 / 5

Date of your route : Mar 10, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★☆ Good
Very busy route : No

The track is muddy and snow-covered; there are insufficient markings on the trees; the section after the small pass requires caution

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ANMATROM
ANMATROM

Overall rating : 4.7 / 5

Date of your route : Nov 19, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

A pleasant walk, with the first part leading uphill through woodland and then downhill, offering lovely views of the surrounding peaks.
We heard the hunting dogs but didn’t see any hunters.
There was a lot of mud towards the end of the route.
The weather was on our side.

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JACQUELET Claude
JACQUELET Claude

Overall rating : 4.3 / 5

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

I can confirm the comments regarding the start of the route in particular. It’s easier to park at the “Piscine” car park, which is just past the Pont de la Dame. The “embankment” is actually a clearly visible flight of steps. To reach the Val Ombré lodge, you can avoid the road and follow the footpaths: the first on the left, which is obvious and cuts across the bend in the road, and the second on the right, which leads to the lodge. That said, a hiking GPS was very useful for peace of mind. It’s a lovely hike surrounded by clearly visible peaks.
.

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Yofrommouch
Yofrommouch

Overall rating : 3.7 / 5

Date of your route : Aug 01, 2022
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Very busy route : No

The description omits certain details about the route.
At the start, it could have been noted: take the first road uphill on the left, 200 m from the swimming pool, from La Diat, on the A-road towards Les Echelles.
Specify that before the Frettevieille fountain, you must continue straight on across the field with the barn (ignore the path heading north-west uphill).
Les Granges de Pleynan does not actually have any... barns; the signpost simply indicates the elevation of 1140m
Take the Chemin de Saint-Bruno in the opposite direction to the sign for Les Cottaves.
Please note that you must keep close to the forest WITHOUT going onto the road towards Les Guillets.
At the entrance to La Martinière, there is no path to the left at a sharp right-hand bend (???), but ONCE inside La Martinière, after the Sites et Paysages campsite, you can take the Chemin (quiet road) du Grand Logis, which leads towards Sur Chargeat and La Diat, but is not the GR route shown on the map...Or perhaps there are no visible signs.

Also note that after the Val Ombré lodge, at the start, the slope climbs steeply for a few hundred metres (you do have to climb 200 metres in altitude!). Just to keep the little ones or the elderly waiting ;-)
Otherwise, the walk was very pleasant. Thanks for the suggestion. Lionel

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AALEX
AALEX

Overall rating : 3.7 / 5

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

The wording in point 6 is doubly confusing.
“Ignore” (not taking it would be clearer). You might think you shouldn’t pay any attention to the sign and just go for it anyway!!!
"Take the road on the left". In fact, you’ve already taken it and you should actually go right.
Suggestion: After the campsite, take the road on the left. It forms a Y-junction. Do not take the dead-end branch; head for the one on the right.

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