Roc’h Gad to Tréhou route

A walk through the heart of the Tréhou countryside.
An easy walk in dry weather.

Details

n°12172006
Creation:
Last update:
Last review:
  • Walking
    Activity: Walking
  • ↔
    Distance: 9.09 mi
  • ◔
    Average duration: 4h 45 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 636 ft
  • ↘
    Descent: - 659 ft

  • ▲
    Highest point: 535 ft
  • ▼
    Lowest point: 180 ft
  • ⚐ Country: France
  • ⚐ City: Le Tréhou (29450)
  • ⚑
    Start/End: N 48.393988° / W 4.131485°
  • ❏
    IGN map(s): Ref. 0517OT
  • Hour-by-hour weather

Description of the walk

Park at Place du Maréchal Ferrand near the church.

(S/E) Head towards the lower part of the village via the Route d’Irvillac, turn onto the Route des Monts d’Arrée and take the first road on the left, the Route de Bodénan. Note the Celtic cross and the washhouse (Kandi) in the background. Continue along the road and turn off to the left after 100 metres, heading towards Kerhuel. Reach the hamlet via the road on the left.

(1) Take the path on the right and you’ll reach the D18 just before a bridge.

(2) Turn left, cross a stream and continue along the road until you reach the first junction marked by a sign for ‘Chemin du Tréhou’,

(3) Turn right onto a path to reach a highest point at 139 m. Take care when climbing to the top of the rock, as it can be slippery. You’ll have a wonderful view of the surrounding area – the perfect moment to catch your breath and have a drink.

(4) Carefully make your way down the rock, cross a stream and follow the path as it winds southwards. At elevation 123, turn left towards the east to reach a picnic area.

(5) Turn right onto the path that climbs towards the highest point in the commune at altitude 172.

(6) Take in the view and walk around the highest point, the rock (Roc’h Gad). Continue on to Bodénan.

(7) Walk straight on along the path, going round the rock. When you reach the road, cross it and take in the countryside.

(8) Walk at a leisurely pace to Coat Menec Huella, passing a few springs and water sources along the way. Cross the D35.

(9) Turn left to reach the gas pipeline (yellow marker 465).

(10) Turn right at the marker and continue for 1 km

(11) First turn left then right, and continue for 1 km.

(12) Turn right towards the D33 (the road between Irvillac and Le Tréhou); cross with care to reach the hamlet of Brunoc. After the pétanque court, ignore the sign at the junction reading: ‘Chemin du Tréhou’.

(13) At Brunoc, before the garage-shed, take the path on the left, and after 100 m, turn right. Following a series of steep descents and ascents, you’ll reach the hamlet of Kergoat.

(14) Walk quietly through the hamlet and admire the magnificent restored houses.
Turn left and then immediately right to rejoin the path which will take you to the mill by the bridge and the village square (S/E).

Waypoints

  1. S/E : mi 0 - alt. 322 ft - Place du Maréchal Ferrand near the church
  2. 1 : mi 0.67 - alt. 364 ft - The hamlet of Kerhuel
  3. 2 : mi 1.01 - alt. 292 ft - Turn left at the fork
  4. 3 : mi 1.3 - alt. 344 ft - Head for the 139-metre rock
  5. 4 : mi 1.7 - alt. 443 ft - Viewpoint on the rock
  6. 5 : mi 2.78 - alt. 423 ft - Picnic area nearby
  7. 6 : mi 3.12 - alt. 535 ft - Highest point: 172 m
  8. 7 : mi 3.4 - alt. 528 ft - Bodénan bypass
  9. 8 : mi 3.77 - alt. 476 ft - Viewpoint over the countryside
  10. 9 : mi 4.81 - alt. 495 ft - Turn left at the fork
  11. 10 : mi 5.15 - alt. 456 ft - Marker 425 gas
  12. 11 : mi 5.76 - alt. 384 ft - Left/right
  13. 12 : mi 6.57 - alt. 361 ft - Turn right at the fork
  14. 13 : mi 7.28 - alt. 344 ft - The hamlet of Brunoc
  15. 14 : mi 8.39 - alt. 302 ft - The hamlet of Kergoat
  16. S/E : mi 9.09 - alt. 325 ft - Place du Maréchal Ferrand near the church

Notes

Please respect private property and livestock enclosures throughout the route.
Watch out for ticks and slippery rocks; walking shoes are recommended.

Worth a visit

Reviews and comments

4.2 / 5
Based on 6 reviews

Reliability of the description
4.2 / 5
Ease of following the route
3.6 / 5
Route interest
4.7 / 5
La Leon 29
La Leon 29

Hello, it’s true that since the route was created on Visorando, storms, a lack of maintenance and tree felling have meant that this walk is no longer worth doing.

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kerand29
kerand29

Overall rating : 3.7 / 5

Date of your route : Mar 11, 2026
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★☆☆☆ Disappointing
Route interest : ★★★★★ Very good
Very busy route : No

A very wild hike in the heart of the countryside.
However, many sections are impassable due to puddles and mud. You will need to take a detour along the embankments or through the neighbouring fields.
Since Storm Ciaran, some sections are still blocked by fallen trees and impassable; you’ll need to find a way round as no alternative route is provided.
There are very recent signposts in some places. However, there are no intermediate markers, so it is very easy to get lost.
Fortunately, the map downloaded from Visorando helps with navigation.
I had planned to take a hiking group on this trail but have decided against it. A shame.

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kerand29
kerand29

Overall rating : 3.7 / 5

Date of your route : Mar 11, 2026
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★☆☆☆ Disappointing
Route interest : ★★★★★ Very good
Very busy route : No

A very wild hike in the heart of the countryside.
However, many sections are impassable due to puddles and mud. You will need to take a detour along the embankments or through the neighbouring fields.
Since Storm Ciaran, some sections are still blocked by fallen trees and impassable; you’ll need to find a way round as no alternative route is provided.
There are very recent signposts in some places. However, there are no intermediate markers, so it is very easy to get lost.
Fortunately, the map downloaded from Visorando helps with navigation.
I had planned to take a hiking group on this trail but have decided against it. A shame.

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Papiluberon
Papiluberon

Overall rating : 4 / 5

Date of your route : Sep 05, 2024
Reliability of the description : Not used / Not applicable
Ease of following the route : Not used / Not applicable
Route interest : ★★★★☆ Good
Very busy route : No

The route was followed in the opposite direction to that shown on the map (starting at the Moulin du Pont near the church)
Passing through Kergoat (watch out for dogs running loose)
At Kergoat, turn left towards the wayside shrine.
At the wayside shrine, turn right towards Rosnonen
At the next wayside cross, turn left towards the D33
At the junction, take the path opposite. Follow for 3 km
At the 138m mark, turn left to join the D35
Head straight ahead and cross the Coat Menec Huella farm
Follow the path, which is well-maintained but still passable, to Bodénan (watch out for the dogs – they’re more intimidating than vicious)
On leaving the farm, turn right (tarmac road) and 100 metres further on, take the path on the left towards the picnic area beside the D18.
About a hundred metres past the rock at elevation 172, the path is impassable (a tangle of trees following Storm Ciaran)
Passing through a forestry site, you reach the picnic area only to find that the path through the woods is impassable, if not non-existent.
Return off-trail to the rock at elevation 172 and Bodenan
Take the tarmac road towards Le Tréhou (passing through Nabonnés (on the right) up to elevation 88, then take the path on the right leading to Kéruel
At Kéruel, turn left then take the path on the right to reach Le Tréhou

''Hike not recommended until the paths have been repaired''____

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DanOll
DanOll

Overall rating : 4.3 / 5

Date of your route : Jul 24, 2022
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A lovely route with few roads. Well worth a go.

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de Franco
de Franco
• Edited:

Overall rating : 5 / 5

Date of your route : Feb 28, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Part of the path was impassable due to flooding. Best tackled in wellies or during the summer months

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Les pommiers
Les pommiers

Overall rating : 4.3 / 5

Date of your route : Nov 07, 2021
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

A muddy route requiring detours. Best avoided at this time of year

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