Route des Forgerons in Inzinzac-Lochrist

The blacksmiths' route will take you from the banks of the Blavet, which was canalised inthe 19th century, to the green hills of the Trémelin Forest. A walk in the heart of unspoilt nature, once exploited for the Kerglaw Forges, which produced iron to meet the needs of Breton canneries.

Details

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  • Walking
    Activity: Walking
  • ↔
    Distance: 12.80 km
  • ◔
    Average duration: 4h 10 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 176 m
  • ↘
    Descent: - 176 m

  • ▲
    Highest point: 98 m
  • ▼
    Lowest point: 6 m

Photos

Description of the walk

Parking is available at the Ile de Locastel car park or the Rue du Blavet car park, towards Penquesten (access via footbridge).

(S/E) At the signpost at the start of the walk, located at the entrance to the car park on the right, take the path on the right. Continue straight ahead to the Blavet and follow it on the left until you reach the second footbridge.

(1) Take the footbridge and enter the Parc du Bunz opposite, crossing the D23 with caution. Turn right near the wall, then left at the stream. Walk along the wetland and take the footbridge on the right.

(2) Follow the path between the fences and continue straight ahead. At the road, turn left, then right.

(3) Continue along the path on the left, alongside the stream. Cross the footbridge and continue to the right along the sunken path towards Ty Henry.

(4) Continue and, at the intersection, turn right towards the conifers. Stay on the main path which runs along the edge of the fields and climbs up to the left towards the road. Turn right and stay on the road for about 100 metres.

(5) Turn left onto the farm track. Go straight ahead at the crossroads and follow the signs for the "Route des Forgerons" route. Facing the embankment, turn right twice, then straight ahead, then left twice.

(6) At the large driveway, turn right, then slightly left, and descend to the right towards the Étang du Ty-Mat.

(7) Turn left before the pond and walk along it.

(8) At the car park, take the path on the left that climbs steeply. Continue straight ahead through the woods and turn left before the road.

(9) Continue to the Kermainguy car park (turning twice to the left, twice to the right, then left). Cross the car park and take the path to the left of the Parcours de la Charbonnière sign in the Bois de Trémelin. Stay on this path, ignoring the turnings on either side.

(10) Turn right, then continue straight ahead to the SPA centre.

(11) Exit the car park on the right and head opposite, into the woods. At the road, cross and follow the path on the right that runs parallel to the road, through the undergrowth.

(12) At the entrance to the village, turn left before the housing estate. At the intersections, go straight ahead, then turn right.

(13) Leave the housing estate on the right, Rue des Chênes, then turn left twice to reach Gorée, Poulherveno and Lochrist.

(14) Enter the housing estate on the left, Rue des Airelles, then turn right onto Rue des Merises and Rue des Myrtilles. Turn left, then right, towards the wash house.

(15) Continue left, passing close to the wash house (on the left below). At the end, go up to the right and follow Rue Cité des Ajoncs to the right, then straight on to Rue de Lann Blenn.

(16) Cross over and take Rue du Parc des Sports opposite. Turn left, then right onto Rue des Lauriers.

(17) Between the houses, follow the path that goes left along the stadium. At the road, go straight ahead, then turn left and right to reach Boulevard Salvador Allende.

(18) Go down the boulevard on the left and, at the intersection, enter the park (left and right). Continue on the central path that passes by the wash house, leaving the ponds on your left. Exit on the right, Cité de Kerprat. Turn left and go down Rue Barbusse. Continue straight ahead at the roundabout, then turn right into Mail Giovannelli. Join the Blavet on the left, passing in front of the Charpenterie.

(19) Walk up the river on the left and cross the footbridge. Cross the square, turn left and then right to return to your starting point (S/E).

Waypoints

  1. S/E : km 0 - alt. 9 m - Île de Locastel car park - Blavet (fleuve)
  2. 1 : km 0.29 - alt. 9 m - Footbridge
  3. 2 : km 1.17 - alt. 14 m - Footbridge
  4. 3 : km 1.66 - alt. 25 m - Stream
  5. 4 : km 1.92 - alt. 29 m - Ty Henry
  6. 5 : km 3.52 - alt. 69 m - Fork in the farm track
  7. 6 : km 5.02 - alt. 93 m - Crossroads of trails
  8. 7 : km 5.51 - alt. 41 m - Ty Mat Pond
  9. 8 : km 6.15 - alt. 41 m - Car park
  10. 9 : km 6.86 - alt. 92 m - Route
  11. 10 : km 7.57 - alt. 97 m - Trémelin Woods
  12. 11 : km 8.2 - alt. 90 m - SPA
  13. 12 : km 8.82 - alt. 79 m - Fork in the road before the towns
  14. 13 : km 9.38 - alt. 55 m - Rue des Chênes
  15. 14 : km 10.02 - alt. 47 m - Rue des Airelles
  16. 15 : km 10.31 - alt. 37 m - Fork in the road towards the wash house
  17. 16 : km 10.75 - alt. 46 m - Rue de Lann Blenn
  18. 17 : km 11.07 - alt. 55 m - End of Rue des Lauriers
  19. 18 : km 11.63 - alt. 39 m - Boulevard Salvador Allende
  20. 19 : km 12.52 - alt. 8 m - La Charpenterie
  21. S/E : km 12.8 - alt. 9 m - Île de Locastel car park - Blavet (fleuve)

Notes

This route is listed in the Morbihan Departmental Plan for Walking and Hiking Routes and certified by the French Hiking Federation. Follow the yellow markings. Information panel with map and heritage information at the start.

Worth a visit

This route is offered by Lorient Agglomération.

- Île de Locastel: one of the sites of the forges from 1860 to 1966, located downstream in Kerglaw, with rolling mills and a galvanising hall.
- Domaine du Bunz: park of the former residence of the ironworks owners
- Trémelin Forest: 100 hectares of deciduous and coniferous trees managed by the O.N.F., exploited in the19th century for the production of charcoal for the forges.
- Étang du Ty Mat: water reservoir created by the Germans in 1939-1945 to supply Lorient with water.
- Charbonnière sensory trail: 1.5 km accessible to people with reduced mobility
- Poul Herveno wash house: late19th century
- Kerprat wash house: covered public wash house from the20th century
- Forges Ecomuseum: visit on the right

Reviews and comments

4.7 / 5
Based on 7 reviews

Reliability of the description
4.9 / 5
Ease of following the route
4.7 / 5
Route interest
4.4 / 5
Domino56
Domino56

Hello, I share your opinion. I wrote essentially the same article.

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Faut qu'ça marche
Faut qu'ça marche

Overall rating : 4.7 / 5

Date of your route : Oct 30, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

The route is well marked. There are many points of interest, especially the beauty of the Trémelin forest.
The end of the route in the town is rather boring. I made a video of this hike: https://youtu.be/aMXQa2bUBm8

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Domino56
Domino56

Overall rating : 4.7 / 5

Date of your route : Dec 01, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

Hi, very nice route, well marked, but the end of the route is a bit of a letdown as it's on a road in town.

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tgillouard
tgillouard

Overall rating : 5 / 5

Date of your route : Aug 08, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A beautiful route, mainly through forest. Very quiet on this beautiful August day. Brittany is so beautiful!
Thank you for the description.

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Philippe L14.
Philippe L14.

Overall rating : 5 / 5

Date of your route : Aug 04, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Very beautiful hike, I recommend it

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FATHIGAHU
FATHIGAHU

Overall rating : 5 / 5

Date of your route : Jun 09, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Very pleasant route.

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pierjac4477
pierjac4477

Overall rating : 4.3 / 5

Date of your route : Nov 02, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

A very pleasant walk along the banks of the Blavet and then through the woods. The last part took us to Inzinzac Lochrist. The paths were very easy to walk on, which is important at this time of year.

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Johel
Johel

Overall rating : 4 / 5

Date of your route : Oct 21, 2024
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : Yes

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