Walk along the Billiers Megalith Trail

This is a circular route running along one side of the Étier de Billiers, Plage des Barges and Plage des Granges, not forgetting a walk around the Penn Lann Lighthouse.
In a single day, you can combine sightseeing, swimming and a walk, either on your own or with the family.
The trail follows, for the most part, the Chemin des Mégalithes between the marshes and the ocean.

Details

10074616
Creation:
Last update:
Last review:
  • Walking
    Activity: Walking
  • ↔
    Distance: 6.69 km
  • ◔
    Average duration: 2h 00 
  • ▲
    Difficulty: Easy

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 22 m
  • ↘
    Descent: - 20 m

  • ▲
    Highest point: 21 m
  • ▼
    Lowest point: 2 m
  • ⚐ Country: France
  • ⚐ City: Billiers (56190)
  • ⚑
    Start/End: N 47.516577° / W 2.484561°
  • ❏
    IGN map(s): Ref. 1021SB, 1022OT
  • Hour-by-hour weather

Description of the walk

Park in the Plage des Granges car park.

(S/E) With your back to the car park, turn right towards Les Granges.

(1) At the crossroads, turn left and stay on this road until you reach the D5.

(2) Cross the road carefully to join theGR®34-GR®349, Chemin des Mégalithes, between the marshes and the ocean. The white track runs alongside the Étier de Billiers and ends at the end of the tennis court.
Continue along Rue du Port and walk to the end.
After the bins, the storage sheds and the small car park, take the steps at the far left to reach Impasse du Phare.
Follow the coastal path round the Pointe de Penn Lann and pass the lighthouse of the same name.

(3) At the lighthouse, continue on to Rue de la Vilaine and leave it almost immediately by taking the cul-de-sac after the square tower, then rejoin the same street after the row of houses lining it.

(4) Turn right and walk around the beach, following the seawall that runs alongside it.
Pass in front of the Cairn des Grays and, further on, skirt the car park where you started. Reach the Dolmen du Crapaud and continue to the T-junction.

(5) Turn left and continue to the end, ignoring a track branching off to the left. Follow the bend to the left and cross the stud farm on a tarmac road.

(6) Keep going in the same direction and walk alongside the campsite.

(1) Turn left to return to the Plage des Granges car park (S/E).

Waypoints

  1. S/E : km 0 - alt. 5 m - Plage des Granges car park
  2. 1 : km 0.17 - alt. 5 m - Les Granges crossroads
  3. 2 : km 1.39 - alt. 3 m - GR34 - GR349 and - Étier de Billiers
  4. 3 : km 2.92 - alt. 10 m - Phare de Penn Lann
  5. 4 : km 3.47 - alt. 6 m - Turn right
  6. 5 : km 5.52 - alt. 14 m - Turn left
  7. 6 : km 5.9 - alt. 17 m - Stud farm
  8. S/E : km 6.69 - alt. 5 m - Plage des Granges car park

Worth a visit

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

4.7 / 5
Based on 5 reviews

Reliability of the description
4.8 / 5
Ease of following the route
4.8 / 5
Route interest
4.6 / 5
Hendur
Hendur

Overall rating : 5 / 5

Date of your route : Sep 24, 2025
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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User 17089667

Overall rating : 5 / 5

Date of your route : Aug 25, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

great

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Berny31
Berny31

Overall rating : 4.7 / 5

Date of your route : Aug 29, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

A family hike with stunning scenery and views. The only downside is that the road between the campsite and the GR is quite busy at this time of year. But unfortunately, there’s no alternative.

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la bigoudene du 56
la bigoudene du 56

Overall rating : 4 / 5

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

Best done in rainy weather. Please note: there’s no mobile signal along much of the route, so don’t rely solely on your phone. The route starts on a farm track. Please note: turn right at the tennis courts. There’s a lovely stretch along the coastal path.

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saint armel
saint armel

Overall rating : 5 / 5

Date of your route : Nov 08, 2021
Reliability of the description : ★★★★★ Very good
Ease of following the route : Not used / Not applicable
Route interest : ★★★★★ Very good
Very busy route : No

What a lovely walk! The sea and marsh area is really lovely!

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