The Grand Thur circular loop from Izieu

Circular route above Izieu, suitable for all seasons. The route is mainly through forest but offers some views of the Rhône valley and the surrounding mountains.

Details

1981625
Creation:
Last update:
Last review:
  • Walking
    Activity: Walking
  • ↔
    Distance: 5.48 km
  • ◔
    Average duration: 2h 30 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 314 m
  • ↘
    Descent: - 314 m

  • ▲
    Highest point: 757 m
  • ▼
    Lowest point: 443 m

Photos

Description of the walk

Izieu can be reached from Brégnier-Cordon or Murs-Gélignieux on the right bank of the Rhône. Take the CD19d, cross the village and continue straight ahead, Rue du Palais then Route du Grand Thur, to park at the first hairpin bend on the right, near a water tank.

(S/E) Go up RouteGR®59du Grand Thur on the right for 200 metres until the first left-hand bend.

(1) Leave theGR®. Take the path that starts level on the left in the hollow of the curve. It crosses a few paths and a track, then gradually climbs through the forest on the mountainside, heading north.

(2) When it passes below the summit, the slope becomes steeper and the path veers north-east to climb a steep gully between rocky areas until it reaches the edge of the summit plateau.

(3) On this plateau, where the geodesic summit is not very pronounced and is wooded, follow the paths that approach the rocky edge to enjoy the views, then walk a hundred metres to the north-west for another viewpoint to the east. Return to the forest path leading southwards.

The fairly obvious path curves a few times as it descends a moderate slope to join the Grande Montagne forest road at a place called En Bochet.

(4) Take this road on the right, rejoining theGR®59: it first descends in hairpin bends on a ridge, then swings around to the west side and, after two hairpin bends, rejoins the starting point (S/E).

Waypoints

  1. S/E : km 0 - alt. 443 m - Parking on Route du Grand Thur near the reservoir.
  2. 1 : km 0.29 - alt. 463 m - Left turn - Trailhead
  3. 2 : km 1.7 - alt. 622 m - Combe towards the north-east
  4. 3 : km 2.09 - alt. 750 m - Grand Thur summit plateau
  5. 4 : km 3.94 - alt. 617 m - En Bochet - junction with forest road
  6. S/E : km 5.48 - alt. 443 m - Parking on Route du Grand Thur near the reservoir.

Notes

This circular route can be completed in any season in half a day, on marked trails or forest paths, without difficulty.

Worth a visit

Most of the route takes place in a forest environment. However, a few clearings at the top and meadows on the way down offer unobstructed views of the Rhône Valley, the surrounding mountains and as far as La Tournette and Mont Blanc.

The village of Izieu has preserved the traditional rural architecture of the Bugey region, with its "à redents" (or "saut-de-moineau") gables. This is also an opportunity to visit the Memorial to the Jewish Children of Izieu or the Maison des Enfants d'Izieu, on the access road.

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

3.8 / 5
Based on 10 reviews

Reliability of the description
4 / 5
Ease of following the route
3.9 / 5
Route interest
3.6 / 5
Isatara
Isatara

Overall rating : 3.3 / 5

Date of your route : May 11, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★☆☆ Average
Very busy route : No

Too bad there's no view upon arrival.

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norgel
norgel

Overall rating : 3.3 / 5

Date of your route : May 05, 2025
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★☆ Good
Very busy route : Yes

A fairly easy route to find, offering magnificent panoramic views.

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brice.dorval.duteil
brice.dorval.duteil

Overall rating : 4.3 / 5

Date of your route : Apr 11, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

Visibility on Mont Blanc at the start of the descent

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Guyane38
Guyane38
• Edited:

Overall rating : 2.7 / 5

Date of your route : Nov 11, 2024
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★☆☆ Average
Route interest : ★★☆☆☆ Disappointing
Very busy route : No

Quite a tedious hike, especially in winter with the fog, no interesting views and almost no signposting. I used the GPS on my phone the whole way and even had trouble finding the path at the top. The descent is easy, unlike the slightly steep climb (half an hour), but it's doable.
This hike is of very limited interest, except for the opportunity to discover the village of Izieu.

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luelno
luelno

Overall rating : 4 / 5

Date of your route : Dec 28, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★☆☆ Average
Very busy route : No

The guidebook is very good. I would add that it is a direct climb without any breaks until you reach the summit. It is all in the woods, which is good for shade in summer but not so good for the view.
The markings near the summit could do with being refreshed and perhaps made a little clearer.
I have a good impression of it.

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MarjorieSGN
MarjorieSGN

Overall rating : 4 / 5

Date of your route : Jun 18, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★☆☆ Average
Very busy route : No

A nice little hike, physically demanding especially at the end of the climb. Very few people must use it because the path has almost disappeared in places.

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ensepromenant
ensepromenant

Overall rating : 5 / 5

Date of your route : Nov 14, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

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chelouche helene
chelouche helene

Overall rating : 3.7 / 5

Date of your route : Oct 28, 2021
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★☆☆ Average
Very busy route : No

Interesting return trip for the views, but make sure you follow the directions for the climb up to Grand Thur, as the trees often block the view on the way up. Be careful after point 1, as the path is hidden due to the creation of a forest track.
Next time, we'll try the ridges up to the Col d'Izieu.
Helene Dolo

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mespompes
mespompes

Overall rating : 4.3 / 5

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

A lovely, interesting walk that matches the description.
The route is not marked, but easy to find and follow. (Be sure to take "the level path to the left of the road in the dip of the left-hand bend").
Please note:
The path between points 1 and 3 is rarely used, so it is narrow and vegetation is taking over. Watch out for brambles.
The climb between 2 and 3 is very steep and I would avoid it in wet weather.
There is little or no view when you reach point 3 because it is hidden by vegetation, but there are some nice views to the south as you descend between points 3 and 1.

Thanks to the author of this hike, we had a great afternoon.

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undeplus
undeplus

The route on the map and the description are well done, but unfortunately there are no signs on the ground, only those for the GR59. So I took the road option and still made it to the summit, but there wasn't much of a view, as indicated. I returned by the same route because there are lots of paths without signs from the summit. I would do this walk again, following the signs.

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coco38cb
coco38cb

Overall rating : 3.7 / 5

Date of your route : Jun 02, 2019
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★☆ Good

A beautiful climb, especially towards the end on rocky terrain. It's a shame there's no clear view at the summit, and there are no directional signs at times.

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