Grande Island – Île-Grande Tower loop from Menhir de Saint-Uzec

Hiking trails & Routes

Grande Island – Île-Grande Tower loop from Menhir de Saint-Uzec

Hard

4.6

(53)

327

hikers

Grande Island – Île-Grande Tower loop from Menhir de Saint-Uzec

06:57

26.6km

190m

Hiking

Hard hike. Very good fitness required. Mostly accessible paths. Sure-footedness required. The starting point of the route is right next to a parking lot.

Last updated: August 28, 2026

Tips

Temporary access restrictions

Includes segments with temporary access restrictions. Check ahead to confirm restricted segments are open to the public.

After 18.6 km for 102 m

Waypoints

Start point

Parking

Get Directions

6.64 km

Port of Trébeurden

Highlight • Other

Between the chaos of rocks and trees, you will find this charming little port with many beautiful yachts and boats.

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11.9 km

Grande Island

Highlight • Natural

Between its pebble and fine sand beaches, Île Grande is a pretty piece of land. It is also home to the pretty port of Saint-Sauveur and the Kervoalant marshes, and …

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Tip by

13.7 km

Port Saint-Sauveur

Highlight • Other

Nice view of the harbor

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14.4 km

Plage du Dourlin

Beach

15.1 km

Former Castel Erek Quarry

Highlight • Structure

Now filled with water, this seemingly harbor structure is actually a former quarry.

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16.3 km

Sculpture on the north shore of Île-Grande

Highlight • Monument

This statue pays tribute to the workers of the Brintec'h quarry, operated from 1930 to 1960 and which extracted blue granite.

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17.4 km

Porz Gelen

Beach

18.4 km

Île-Grande Tower

Highlight • Other

To go around the island you can follow the GR 34 (customs trail) markings. Allow seven kilometers, or about three hours of leisurely walking.

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26.6 km

End point

Parking

Way Types & Surfaces

Way Types

10.7 km

8.50 km

4.25 km

2.60 km

466 m

120 m

Surfaces

9.13 km

8.48 km

3.45 km

3.21 km

2.21 km

150 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Weather

Friday 9 October

17°C

12°C

-- %

Additional weather tips

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Comments

July 27, 2024,GR 34: Von Pleumeur-Bodou nach Trébeurden

Menhir is a Breton term for an elongated stone block that was placed upright by people in prehistoric times. The Menhir of Saint-Uzek was built between 5000 and 4000 BC and is eight metres high and three metres wide. This makes it the largest menhir with Christian symbols in France.

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September 29, 2021,8503997-trebeurden - kerenoc

Today we made a nice varied trip from Trebeurden to Kerenoc. First through the Marais die Quellen, a saltwater marsh in the dunes. Then a tour around Ile Grande. On the north side along the old quarries. Then to the impressive menhir de StUzec. Then a nice stretch through the forest. Along the Radome a radarcooler of impressive dimensions. Along …

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