The Grand Baillis and the Blaches State Forest

You start by taking paths and small roads that wind through the peaceful Dauphiné countryside, then return through the beautiful Blaches Forest. There are no difficulties to report along this walk.

Details

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  • Walking
    Activity: Walking
  • ↔
    Distance: 8.02 mi
  • ◔
    Average duration: 4h 25 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 814 ft
  • ↘
    Descent: - 823 ft

  • ▲
    Highest point: 1,493 ft
  • ▼
    Lowest point: 1,093 ft

Photos

Description of the walk

The route starts in the centre of Cour-et-Buis, a small village between Beaurepaire and Vienne. The central square, which is the starting point, is surrounded by the church, the town hall and the school.
The route is mainly marked in yellow. Apart from the forest track, it mainly follows very small, quiet tarmac roads.

(S/E) Leave the car park via the lane between the school and the town hall (Rue de l'Égalité). It turns left and passes in front of the cemetery. Very soon, at a fork near a bridge, turn right (Chemin de Bois Dinoud). At first, you will have a stream on your left, then your path turns left and crosses the stream to move away from it.
You will come out onto a small road.

(1) Take it on the left to pass in front of a car cemetery. Shortly afterwards, the yellow markings invite you to turn right. Follow them to take Chemin des Terres Blanches.

A little further on, leave the yellow markings and continue left along the small road, which leads to a T-junction (signposted "Route du Buron"). Turn left and very quickly turn right (signposted "Voie sans issue"). Pass a first, faintly marked path on the left, then another more obvious one, before taking the path that descends towards the railway line. You will come to a small road, which you take on the right. You will arrive at the tunnel under the railway line.

(2) Go under it. You will come to a T-junction and turn left (signposted "Route de Primarette"), then very quickly left again (Chemin Virguilloud). This will take you over a small stream (you will find the yellow markings again). At a fork, go up to the right. Your road climbs steeply and turns right before the hamlet of Petit-Feu.

(3) It makes two sharp bends. On the plateau, at a T-junction, turn right (yellow markings).

(4) When you reach a wood, take the path on the left that runs alongside it (signposted Maison Piolat - 452m, towards Chapelle de Buis). When you reach Maison Piolat, continue straight ahead, along the hedge. Descend to a T-junction. Turn right (signposted "Chemin du Raclet"). You will arrive at an imposing building (the former school of Buis).

(5) You will see a sign for "Buis - 390m". Turn right and walk to the pretty Buis Chapel (about 200m away).

(6) As a reward, there is a water tap at the gate of the cemetery surrounding the building (the water is turned off during periods of frost).

(5) Back at the old school, head opposite towards the Blaches forest. Cross the district road, then cross a stream and climb steadily up the hillside. Once you enter the woods, cross the first crossroads (yellow markings). You will come out onto a wide, flat forest track (signposted "Forêt des Blaches - 450m").

(7) Take it to the left towards "Tour de Pinet/Les Crêtes". Follow it for about 2.5km (about 45 minutes at a normal walking pace). Ignore any paths leading off to the right or left; the yellow markings will guide you in the right direction.

(8) You will see a table and benches on your left, under a beautiful tree. Continue on.

(9) Shortly afterwards, you will come out of the woods. You will see some houses; take the small road on the left (house No. 432). This will take you away from the yellow markings.

(10) You come out onto the D38 departmental road. Turn left. Be careful, traffic moves fast here. Stay on the left side of the road, facing oncoming traffic. About 100 metres further on, take the path down to the left. It continues onto a small road, which you also take on the left. You arrive at a roundabout.

(11) Turn left (there is a pavement). At the traffic lights, turn left to return to your car park (E).

Waypoints

  1. S/E : mi 0 - alt. 1,125 ft - Cour-et-Buis car park (church/school/town hall)
  2. 1 : mi 0.79 - alt. 1,447 ft - Small road before a car graveyard.
  3. 2 : mi 1.75 - alt. 1,286 ft - Tunnel under the railway line.
  4. 3 : mi 2.22 - alt. 1,325 ft - Small road at a 45° angle on the left.
  5. 4 : mi 2.63 - alt. 1,486 ft - Maison Piolat sign
  6. 5 : mi 3.42 - alt. 1,270 ft - Buis sign
  7. 6 : mi 3.56 - alt. 1,342 ft - Buis Chapel
  8. 7 : mi 4.61 - alt. 1,467 ft - Forêt des Blaches sign
  9. 8 : mi 6.19 - alt. 1,437 ft - Picnic table
  10. 9 : mi 6.39 - alt. 1,407 ft - Second house on the way out of the Blaches Forest (No. 432)
  11. 10 : mi 6.66 - alt. 1,427 ft - D38 crossroads
  12. 11 : mi 7.65 - alt. 1,115 ft - Roundabout
  13. S/E : mi 8.02 - alt. 1,125 ft - Cour-et-Buis car park

Notes

There is a water point at the gate of the two cemeteries you pass (the one in Buis is closed during winter).

Halfway along the route, there is a picnic table.

There are no major difficulties apart from the distance and three hills.

Worth a visit

The Dauphiné countryside and a few beautiful residences.

The large Blaches Forest.

The town of Vienne with its architectural and cultural heritage.

Reviews and comments

4.4 / 5
Based on 12 reviews

Reliability of the description
4.8 / 5
Ease of following the route
4.7 / 5
Route interest
3.8 / 5
cathyferrer
cathyferrer

Overall rating : 4.7 / 5

Date of your route : Nov 18, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

Hike with sections of the trail still very muddy and flooded after the recent rains.
A beautiful alternation of forests and meadows. It's a shame that the holly trees have no berries this year!!!
Strange = Before point 2 on the path called "Boindrier" and near the entrance to the house on the left, there is a chain across the path and a "No Entry" sign, which raises questions.... I went through despite the prohibition, but I didn't feel very comfortable.... Shouldn't we continue along the Route Du Buron and then, at the place of the same name, take the Route De Primarette on the right until we reach the railway crossing? In fact, I think the "Isère Bièvre-Valloire" signpost goes that way.
Thanks to the author.

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philmomi
philmomi
• Edited:

Overall rating : 4 / 5

Date of your route : Aug 10, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★☆☆☆ Disappointing
Very busy route : No

This hike is of limited interest and proves disappointing for several reasons:

  • the route runs alongside a high-speed rail line for nearly an hour and a half, allowing you to count the number of trains (eight during our hike),
  • Numerous sections on tarmac roads make the hike less bucolic.
  • the picnic table is more than 9 km from the start point out of a total of 12 km (so not halfway as indicated in the description)
  • the distance between points 7 and 8 is more than 2 km on a long, fairly monotonous straight line.
  • There are few shaded areas. On the other hand, there are many sunny areas, which are not ideal during a heatwave.

In short, this hike is not worth the detour.

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balladesetrandonnees
balladesetrandonnees

Overall rating : 5 / 5

Date of your route : Jul 31, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Very pleasant, shaded route with no difficulties

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liliane.clarens
liliane.clarens

Overall rating : 4.7 / 5

Date of your route : Sep 20, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

Route between valleys, plateaus, woods and the Blaches forest.
A beautiful stretch past the old school in Buis and the climb up to the pretty little chapel.
Along the way, you will see the Pilat massif, the Alps and crocuses lining the path.
Thanks to the author for this discovery of nature in absolute tranquillity.

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Sud 8
Sud 8

Overall rating : 4.7 / 5

Date of your route : Sep 20, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

Country hike through valleys, fields, forests, and quiet roads, with a welcome picnic stop.
Thanks to the author.

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jpbeatawa
jpbeatawa

Overall rating : 4.3 / 5

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

Hike done in the morning.
Pretty scenery, three slightly steep hills. It's a mix of forest, paths through fields and small, quiet tarmac roads.
Before reaching point 2, be careful on the path that descends towards the road, as it is not very well marked.
Some places with dogs behind fences that may surprise you (especially when arriving at point 3).
Thanks to the author.

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masdelaraz38
masdelaraz38
• Edited:

Overall rating : 4.3 / 5

Date of your route : Jun 26, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★☆☆ Average
Very busy route : No

A bucolic Sunday stroll. Not particularly difficult, except for three fairly steep hills spread out along the route. Alternating between woodland and meadows, with a few sections on very quiet tarmac roads. Few or no views. The description is clear, so it's impossible to get lost. The water sources mentioned are definitely there. Thanks to the author.

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Valfonie
Valfonie

Overall rating : 4.7 / 5

Date of your route : Jun 11, 2020
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

A lovely walk in a rural area of the Viennese hinterland. The forest there is beautiful.

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ALLRANDOF
ALLRANDOF

Overall rating : 4.3 / 5

Date of your route : Feb 14, 2020
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good

A pleasant walk in the countryside.

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PORNICI
PORNICI

Overall rating : 4.3 / 5

Date of your route : Oct 15, 2019
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★☆☆ Average

An easy walk;
perfect for getting some fresh air;

no particular views;

road through the forest a bit long

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Françoise escoffier
Françoise escoffier

Overall rating : 4.3 / 5

Date of your route : Jun 03, 2019
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good

Beautiful hike, small road with no traffic, shaded.

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gilbert.agnes@orange.fr
gilbert.agnes@orange.fr

Overall rating : 4 / 5

Date of your route : May 27, 2019
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good

A pleasant walk with no particular problems.

Although we are somewhat familiar with the area, we discovered new paths during this walk
Thank you

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