The Traouïéro Valley

Along with the pink granite chaos, the Vallée des Traouïéro is the region's second most popular tourist site. It consists of two steep-sided valleys through which the Kérougant river winds its way before separating and joining the natural harbour of Ploumanac'h. This stream forms the natural boundary between the municipalities of Perros-Guirec and Trégastel. The Petit-Traouïero flows into the Ploumanac'h ice mill (Milin Ru), while the Grand-Traouïero flows into the Trégastel wheat mill (Milin Glaz).

Technical sheet

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  • Walking
    Activity: Walking
  • ↔
    Distance: 10.64 km
  • ◔
    Average duration: 3h 20 
  • ▲
    Difficulty: Moderate

  • ⚐
    Return to departure point: Yes
  • ↗
    Vertical gain: + 97 m
  • ↘
    Vertical drop: - 99 m

  • ▲
    Highest point: 59 m
  • ▼
    Lowest point: 3 m

Photos

Description of the walk

Tourony Beach car park in Trégastel.

(S/E) Take Rue de Tourony to join the D788. Follow it on the left, then turn right after the campsite entrance and follow the lake.

(1) Turn right following the sign for "Accès à la Vallée des Traouïero". When you reach a road, turn left. Continue south on this road, walking on the hard shoulder as there is heavy traffic.

(2) After passing several dead ends on the right, turn left to enter the undergrowth and descend to the stream. The path veers to the right, descending more or less towards the south. Follow the stream, crossing it twice (note the engravings on the stone that allows you to cross the second time; this is a gravestone that mysteriously ended up here). You will arrive at a clearing. Note the posts that supported the rolling bridge of a quarry that used to be here.

(3) Continue to the right and follow the stream. After crossing it again, the path climbs eastwards and joins a road.

(4) Cross and take the path opposite. Cross Pont Névez.

(5) Turn left before Kerlessanouet. At the end of the road, turn left and 60 metres further on, follow the path on the right. It leads to Kergomar, where you will rejoin the Randreus road.

(6) Cross the road and return to the undergrowth via the path slightly to the left to reach an intersection you passed on the way there.

(3) Head north, retracing your steps from the outward journey.

(7) Take the path on the right that goes uphill, follow the road on the left and turn right at the first junction. Continue straight ahead at the crossroads towards the huge cranes in the quarries.

(8) Before the road leading out of the quarries, turn left onto the road.

(9) Turn right onto a small path through the woods and follow it until it leads to a road.

(10) Turn right. At the crossroads, turn left to reach the D788 departmental road, which you must cross and then follow on the left.
Off the circuit: take the path directly opposite to walk along Ploumanac'h harbour and reach the Petit-Trouïéro tide mill (in Ploumanac'h)
After the Grand-Traouïéro tide mill (in Trégastel), take the path on the right to follow the Chaussée du Port. At the end, turn left and then take the right-hand lane to return to the car park at the start (S/E).

Waypoints

  1. S/E : km 0 - alt. 6 m - Tourony Beach car park
  2. 1 : km 0.9 - alt. 5 m - Path on the right marked "Vallée des Traouïero"
  3. 2 : km 1.65 - alt. 37 m - Cross at the pedestrian crossing to access the valley - Vallée des Traouiëros
  4. 3 : km 3.4 - alt. 40 m - Bifurcation (loop)
  5. 4 : km 4.46 - alt. 59 m - Cross over and take the road opposite
  6. 5 : km 5.44 - alt. 54 m - Before Kerlessanouet, turn left onto the road
  7. 6 : km 6.31 - alt. 57 m - Cross and follow the path opposite on the left
  8. 7 : km 7.52 - alt. 37 m - Path on the right
  9. 8 : km 8.45 - alt. 29 m - Before leaving the quarries, take the path on the left
  10. 9 : km 8.66 - alt. 17 m - Take a small path on the right
  11. 10 : km 9.59 - alt. 19 m - Take the Randreuz (or s) road on the right
  12. S/E : km 10.64 - alt. 6 m - Tourony Beach car park

Practical information

There is a common section for the outward and return journeys between WP (3) and (7).
A shortcut by road can be taken between WP (4) and (6) by turning left at (4) and then at (6).

A quick reminder: granite (with an e) is the geological term for volcanic rock, while granit (without an e) comes from Italian and has been used since the 17th century to refer to the building material. The pink colour of this granite, known as La Clarté granite, is largely due to the presence of iron oxide (haematite) in the crystal lattice of the alkaline feldspar.
Pink granite is found in three places on earth: La Clarté in Perros-Guirec, Gorges de Piana in Southern Corsica and in China.

In the nearby area

The granite quarries can be visited, but only by appointment. Contact the Perros-Guirec Tourist Office.
The Port of Ploumanac'h.

Reviews and comments

4.2 / 5
Based on 26 reviews

Reliability of the description
4.2 / 5
Clarity of route map
4 / 5
Route interest
4.4 / 5
St Loup
St Loup

Overall rating : 2 / 5

Date of walk : Oct 21, 2025
Reliability of the description : ★★☆☆☆ Disappointing
Clarity of route map : ★★☆☆☆ Disappointing
Route interest : ★★☆☆☆ Disappointing
Busy trail : No

There are no markers. Furthermore, past storms have altered the landscape and the route.

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dominus67fra
dominus67fra

Overall rating : 5 / 5

Date of walk : Aug 25, 2025
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : Yes

Very beautiful hike.
Magnificent landscapes
No difficulty finding your way with the Visorando app, despite the multitude of trails

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User 12883677

Overall rating : 3 / 5

Date of walk : Jul 27, 2025
Reliability of the description : ★★★★☆ Good
Clarity of route map : ★☆☆☆☆ Very disappointing
Route interest : ★★★★☆ Good
Busy trail : Yes

There are almost no markings left on the various paths. There are lots of green dragon markings and red horseshoe marks, as well as numbered trail markers, mainly 4, 5 and 8, 9. Lots of people are "lost" and, like us, are trying to use GPS to figure out where they are and where the trails are. It must be acknowledged that a lot of clean-up work was done after Storm Cioran wreaked havoc. However, the signposting has not been redone. It's a shame that the Perroz Guirec tourist information office provides route maps that are just as unusable.

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jmarqueteau
jmarqueteau

Overall rating : 2.7 / 5

Date of walk : Sep 07, 2024
Reliability of the description : ★★★☆☆ Average
Clarity of route map : ★★☆☆☆ Disappointing
Route interest : ★★★☆☆ Average
Busy trail : No

In addition to the obstructions caused by fallen trees, which are marked and difficult to get past, we decided at point 6 to return via the Kergomar road, which rejoins the route after point 7. However, at point 9, the path was blocked by branches and a "no entry" sign painted in red. We returned via Rue des Carrières and Boulevard des Traouïero, which is much less pleasant

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Flobafi
Flobafi

Overall rating : 4 / 5

Date of walk : Jun 29, 2024
Reliability of the description : ★★★★☆ Good
Clarity of route map : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Busy trail : No

Following Storm Ciaran, there were many fallen trees. The first part of the trail in the valley was clear, but the section between points 3 and 6 was impassable.
Furthermore, when paths crossed, the markings were very inadequate. Fortunately, Visorando's directions helped with orientation.

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gilleps
gilleps

Overall rating : 1 / 5

Date of walk : Jun 14, 2024
Reliability of the description : ★☆☆☆☆ Very disappointing
Clarity of route map : N/A
Route interest : N/A
Busy trail : No

Following the storm on 1 November 2023, only the northern part of the Grand Traouiero is clear. You can access it from the Randreus path in Perros-Guirec or from Troperic in Trégastel.

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tegnaf
tegnaf

Overall rating : 4 / 5

Date of walk : May 07, 2024
Reliability of the description : ★★★★☆ Good
Clarity of route map : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Busy trail : No

It's not easy to know what to make of the comments. There are also signs mentioning roadworks and restrictions. But it's still passable, right?

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Aldodekerpuns
Aldodekerpuns

Overall rating : 5 / 5

Date of walk : Apr 12, 2024
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : N/A
Busy trail : No

It is not possible to continue the Traouïéro Valley trail... Stop at point no. 2 by prefectural order following the fall of numerous trees blocking the paths and all paths leading to the valley.
Note: At the tide mill near the campsite and on the signs (access to the Traouïero Valley), the information could also have been provided by the town hall.

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superbougnat
superbougnat

that sounds good to me

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mauricejeannine
mauricejeannine

Overall rating : 5 / 5

Date of walk : Sep 10, 2023
Reliability of the description : N/A
Clarity of route map : N/A
Route interest : ★★★★★ Very good
Busy trail : No

We completed this circuit on foot, starting from Trestraou Beach in Perros-Guirec. Walking down Chemin du Moulin to reach Ploumanach Harbour with the intention of reaching Trégastel Tidal Mill, we noticed, at Ploumanach Tidal Mill, that a sign prohibited crossing the bridge over the pond due to a risk of collapse. Like others, we crossed it because otherwise we would have had to go back up Chemin du Moulin to reach the Trégastel tide mill via the boulevard.
So, we finally arrived at the start of the route, where there are panels illustrating the history of the Traouïéro valley and granite extraction.
The valley begins a little further on. The discovery is truly spectacular and impressive. Another hiker (maxcaviso, thank you) pointed out that the Pont Nevez loop was not very interesting, so we skipped it, especially since we still had to walk back to Trestraou Beach. Besides, it's the Traouïéro Valley that's really interesting. At Kergomar Rock, we turned back and, when we reached the small pond, we climbed up a path and some steps to the Randreus road. Magnificent and completely exotic. No difficulty unless you have trouble climbing steps.

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Céline2112
Céline2112

Overall rating : 5 / 5

Date of walk : Aug 06, 2023
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

Perfect, very pleasant, easy to follow

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maxcaviso
maxcaviso

Overall rating : 4.3 / 5

Date of walk : Jul 08, 2022
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★☆☆ Average
Busy trail : No

Nice start to the route up to point 3.
However, I find the Pont Nevez loop rather uninteresting.
The return journey by road isn't very exciting either.

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Olive22140
Olive22140

Overall rating : 4.7 / 5

Date of walk : Nov 06, 2021
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★☆ Good
Route interest : ★★★★★ Very good
Busy trail : Yes

We just did this hike, it's really nice. Walking at the bottom of this little valley, you feel like you're far away from everything. The river, the trees, the ferns... it's chaos, but it's a real Breton river as you would imagine it. Walking past these huge rocks or underneath them makes you feel like an explorer. The path is well maintained, with signs, footbridges, stair bridges, but some passages can be tricky. Given the season, the path is unfortunately muddy, and with the dead leaves and rain, you have to be careful on the footbridges. The second part, more in the countryside, allows you to discover nice spots and pretty houses, and you only walk on roads for a short while you often stay on paths between the fields. Thanks to GPS, there are no orientation issues, and some paths are parallel, so you arrive at the same place. It's a beautiful discovery that I will make again in the summer.

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Géraud de BOISSET
Géraud de BOISSET

Overall rating : 4.7 / 5

Date of walk : Aug 19, 2021
Reliability of the description : ★★★★☆ Good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

Walk taken on a cloudy day in August.
A very interesting route that runs along the Traouiero valley, dotted with huge blocks of pink granite that seem to have tumbled down from an unlikely mountain. It feels like you're in the Huelgoat forest or at the bottom of the Val Sans Retour in the Paimpont forest. You could almost expect to find trolls and goblins at the bottom of the natural caves formed between these rocks.
The rest of the route is quite rugged but very well laid out with various footbridges and steps. There are no topographical difficulties along the valley. However, for the two loops (first to the south and then to the north-east), follow the GPS track or the explanations in the topographical map carefully, as it is a network of paths and trails.
As recommended, we started from point No. 2 (cars can be parked along the small Traouieros road at No. 62)
A walk to be recommended.

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MORBU
MORBU

Overall rating : 5 / 5

Date of walk : Jul 29, 2021
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : Yes

A superb walk in an enchanted forest to be enjoyed in the sunshine. The path is very well maintained but there are numerous junctions that may cause you to hesitate. Otherwise, the forest is very beautiful with rocks everywhere and a river winding below. You expect to see elves appear at every turn! Ideal for children.

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