Le Coup de Sabre and La Tour Sans Venin: places of interest in Grenoble

This hike takes you on a varied route with scenic viewpoints to discover some local curiosities, without leaving the Grenoble metropolitan area, as the starting point is at the terminus of tram line A, "La Poya".
The varied passages through Les Vouillants are described in another hike on Visorando and can be added on for experienced walkers.

Details

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  • Walking
    Activity: Walking
  • ↔
    Distance: 10.74 km
  • ◔
    Average duration: 4h 25 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 464 m
  • ↘
    Descent: - 464 m

  • ▲
    Highest point: 659 m
  • ▼
    Lowest point: 205 m

Photos

Description of the walk

(S/E) At the tram terminus "A- La Poyat", head south-west towards Rue de l'Abbaye. 400m further on, at the four-way crossroads, cross over to the other side, where you will see a signpost indicating the Tour Sans Venin at 4.10km. Head southwest up this steep street in La Poya. At the end of the cul-de-sac, pass through a half-barrier and the path begins to climb steeply, before levelling out a few dozen metres further on and widening.

Yellow and green markings

(1) The Coup de Sabre takes you between the mountain and a gigantic section separated by a single line. Emerging from this geological curiosity, the path continues to climb and turns naturally towards the south. A small chaotic section is easy to cross and you will immediately reach a clearly marked fork with two old small signposts opposite each other marked "ball trap".

(2) Take the right fork.

(3) Cross a path higher up (this will be the return route, so take note of this junction) and continue opposite on the path climbing westwards.

(4) Cross another forest path to rejoin the trail that heads south. Ignore the poorly marked trail climbing to the right. Follow the markings on this main trail without difficulty.

(5) When you reach Ferme Froussard (altitude 480m), follow the sign for "Tour Sans Venin 2.5 km" towards the south-west along the forest track. After about 300m, take a shortcut that climbs steeply to the left, towards the south-east. This shortcut intersects the forest path at "la Croisée" (signposted La Tour Sans Venin at 2.08km). Finally, rejoin the forest path in the open fields with a view of Grenoble until you pass a forest barrier.

(6) At this crossroads, head south and pass under the high-voltage power line. The path is called Chemin du Sabot. At the next forest barrier, admire the fields below on the left (many horses) and a cave that is apparently not open to visitors. Continue along the path.

(7) When you reach the Tour Sans Venin, don't hesitate to walk around it, as there are many viewpoints and places to stop for a break.
The descent is the same as the ascent to Ferme Froussard. There are no particular difficulties with orientation.

No markings.

(5) Once back at the Froussard farm, turn right onto the wide path leading down to a Y-shaped crossroads.

(8) Turn left heading due north to reach Pré Faure, a forest car park that is quite busy at weekends and on sunny days.
Follow the path north-west to the Ferme Raymond crossroads.

(9) Go down the tarmac road to a hairpin bend on the right. At the bend, follow the forest path to the left heading north, then north-west.
Avoid the few paths that appear to be shortcuts to Coup de Sabre on your right. Return to the crossroads at the top of the hill.

Yellow and green markings

(3) Turn right towards the east, taking the wide downhill path, pass Coup de Sabre again and exit via the tarmac road you took on the way up to the tram terminus (S/E).

Waypoints

  1. S/E : km 0 - alt. 207 m - Tram terminus
  2. 1 : km 0.86 - alt. 294 m - Passage between the rocks cut at Sabre
  3. 2 : km 0.94 - alt. 319 m - At this fork, turn right.
  4. 3 : km 1.04 - alt. 342 m - Crossroads of the circular
  5. 4 : km 1.24 - alt. 383 m - Go straight ahead at the crossroads.
  6. 5 : km 1.96 - alt. 483 m - Ferme Froussard, a key location in the Resistance
  7. 6 : km 3.15 - alt. 622 m - At the crossroads, head south, to the right.
  8. 7 : km 4.5 - alt. 656 m - The Tour Sans Venin
  9. 8 : km 8.17 - alt. 421 m - Turn left at the fork.
  10. 9 : km 8.8 - alt. 401 m - Follow the tarmac road.
  11. S/E : km 10.74 - alt. 207 m - Tram terminus

Notes

Water is available at the fountain at La Tour Sans Venin, behind the first bench (screw-top fountain: turn the cap!).
Walking shoes are preferable to trainers. Use walking sticks for stability on the climb.
From Le Sabot to La Tour Sans Venin, there are numerous picnic spots.
Between points (9) and (3), a few trails on your right will take you back to Coup de Sabre. Follow the description instead, as heavy use by mountain bikes starting these passages can make them slippery in wet weather.

Worth a visit

This is one of the routes that takes you up to the Vercors Plateau if you want to do the entire GTV.
You will pass by Ferme Froussard, a key location in the Resistance.
La Tour sans Venin: the legend of the snake repellent spread upon the return of the Crusades.
http://chateau.over-blog.net/article-260...

Reviews and comments

4.5 / 5
Based on 9 reviews

Reliability of the description
4.7 / 5
Ease of following the route
4.5 / 5
Route interest
4.3 / 5
ArcheoPat38
ArcheoPat38

Overall rating : 4 / 5

Date of your route : Apr 23, 2026
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

Hello.
A route that’s shaded at the start, through the woods. Once you’ve got past the initial slopes, the paths become easier, starting from Broussard Farm. We met mountain bikers who were all considerate of pedestrians.
Stunning views from the ‘Tower Without Venom’.
The highlight of this walk is that it begins almost as soon as you step off the tram and out of the city, allowing you to find yourself instantly surrounded by birdsong.
Enjoy the walk.

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Claude R3.
Claude R3.

Overall rating : 4 / 5

Date of your route : Jul 29, 2024
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : Yes

Interesting and shaded, with the option of only going as far as Froussard Farm on a circular route if you are travelling with children or elderly people.

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addict38
addict38

Overall rating : 5 / 5

Date of your route : May 20, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A mostly shaded route, which is useful when it's very hot, with gentle slopes.
Beautiful views, birdsong, and an unexpected encounter at the Tour sans Venin: a friend I hadn't seen for 20 years 👍👍

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skyppyy38360
skyppyy38360

Hello! Your divergence is indeed correct.
This allows for variation during descent.
Thank you for your review!

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Thierry Zolt
Thierry Zolt

Overall rating : 4.7 / 5

Date of your route : Aug 28, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

A pleasant 3-hour hike.
After the tower without venom, 250 m along the road, there is a path that leads down to the Vouillants picnic area. You can then reach point 8 of the hike by crossing the Désert de Jean-Jacques. This avoids a return trip, and in terms of the walk itself, you don't lose out.

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Isanel
Isanel

Overall rating : 5 / 5

Date of your route : Feb 15, 2020
Reliability of the description : ★★★★★ Very good
Ease of following the route : Not used / Not applicable
Route interest : ★★★★★ Very good

An easy, family-friendly hike, with only a slight climb at the beginning.
Landscapes that are worth the hike: unusual rocks, clearings, ruins of old farms, beautiful views of the Grenoble metropolitan area and the surrounding mountains.
Convenient access by tram.

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JJVdbt
JJVdbt

Overall rating : 4.7 / 5

Date of your route : Jul 13, 2019
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good

Rather than retracing our steps once we reached the tower without venom, we descended through the squirrel desert, which made for a nice circular loop. You can also go through the JJ Rousseau desert, if you prefer.

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Kiwioui
Kiwioui

Overall rating : 4.7 / 5

Date of your route : Sep 30, 2018
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good

3½ hours' walk instead of the 4 hours indicated. The first 100 metres and therefore the last 100 metres are difficult because there are lots of small stones and the slope is very steep. The rest is an easy walk.
We did the walk from 8 a.m. to 11:30 a.m. in the sunshine.

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pellerina
pellerina
• Edited:

Overall rating : 4.3 / 5

Date of your route : Jun 17, 2018
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good

A pleasant, short hike with plenty of shade, scenic views and picnic facilities.
A bit crowded on Sunday mornings (mainly mountain bikers) but it's fine.
Description: good, despite some hesitation on the way back from Ferme Froussard

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Patrice 38
Patrice 38

Overall rating : 4.3 / 5

Date of your route : Apr 12, 2017
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good

A pleasant walk. A little difficult at first, but easy going afterwards.

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