Circuit de Port Blanc, Trévou-Tréguignec: walk in Brittany

A 6.9 km loop between countryside and coast in Port-Blanc: a chapel at the top of its stairs, fishermen’s lanes, views of the islands and shingle banks.

Suggested time: 2 hours
Type of place: Walking loop · Pink Granite Coast
Atmosphere: Flowery countryside and seaside, between a chapel and shingle banks.
Getting there: Penvénan. Chapel of Notre-Dame de Port-Blanc

The route

Loop: the route returns to its starting point. Route: Département des Côtes-d'Armor (PDIPR), Licence Ouverte 2.0, mise à jour du 2026-09-11.

Download the GPS track

GPX file, to open in a walking app (Komoot, OsmAnd, Garmin Connect, iPhiGéNie…).

Who this place suits

With family: 5/10
As a couple: 7/10
With friends: 8/10
Solo: 8/10
With a dog: 8/10
Reduced mobility: 2/10

These scores are calculated from what the page records: official rating, facilities, difficulty, duration and location. They are a guide, not a substitute for contacting the venue, especially about accessibility.

About

Half countryside, half coast: this Port-Blanc trail, between Trévou-Tréguignec and Penvénan, alternates the heights of the village and the seaside. From the heights, wide views open over the coast and the archipelago. The chapel of Notre-Dame de Port-Blanc appears at the top of a staircase with steps worn by time. You then cross the village, its lanes and fishermen’s houses, before the Crec’h André viewpoint, facing the islands. The little paths between gardens and banks are full of flowers. Going down towards the sea, the path follows the Launay marsh and then a shingle bank where sea kale grows. After the Royo harbour, you follow the shingle bank of Les Dunes beach back towards Port-Blanc and the Sentinelle rock. The loop is 6.9 km long, with 81 m of ascent; allow about 2 hours of walking. The stated level is medium. Start: the chapel of Notre-Dame de Port-Blanc. The waymarking is yellow, and red and white on the coastal section shared with the GR 34. The official route, published by the Côtes-d’Armor département and updated on 11 September 2026, is shown on the map and can be downloaded as a GPX file to follow on your phone.

What you will see

6.9 km, about 2 hours
81 m of ascent
Level: medium
Loop: back to the starting point
Chapel of Notre-Dame de Port-Blanc
Crec’h André viewpoint over the islands

Show 2 more points

Shingle bank and sea kale
Passing Port-Blanc beach

Tips on the spot

Start: the chapel of Notre-Dame de Port-Blanc.
On the coastal section, the trail follows the GR 34, waymarked in red and white.
The GPX track can be downloaded from the map: handy for staying on the right path at junctions.

Frequently asked questions

How long is the walk?

6.9 km, with 81 m of ascent, or about 2 hours of walking.

Where does it start?

Chapel of Notre-Dame de Port-Blanc. The route comes back to its starting point.

What can you see along the way?

The chapel of Notre-Dame de Port-Blanc, the village lanes, the Crec’h André viewpoint over the islands, the Launay marsh, the Royo harbour and the Sentinelle rock.

Source: Département des Côtes-d'Armor (PDIPR), Licence Ouverte 2.0, mise à jour du 2026-09-11 via data.gouv.fr, updated 11 September 2026.

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