Trail circuit n°25 - Tour de l'aber Ildut

Lanildut Lanildut
  • Type Running - Trail
  • Distance 15 Km
  • Duration 2h
  • Difficulty Medium
  • Walks
Pont Rheun
Manoir de Bel Air

About us

This Trail tour takes you around the mouth of the Aber Ildut river, crossing the aber by boat.
/! Crossing the aber is possible by boat from April to October, simply book with the harbourmaster at Lanildut.

Along the way, you'll discover the Maison de l'algue, the heritage of Porscav, the Kerglonou site, granite quarries, the Pont Rheun, the heritage of La Franchise and granite townhouses.

All Trail en Iroise routes can be found at

See the bottom of the page for all the activities and restaurants in the area.

Documents to download
Step 1/8:

Report to the harbor master's office for the Aber Ildut boat crossing.

Capitainerie de Lanildut

Along the Aber Ildut, 3 harbours are listed as being of heritage interest! The first, Porscave, was historically a port for "gabares", boats used to transport goods, first under sail, then motorized from 1930 onwards. The gabariers' houses are a distinctive feature of this charming little port, where fishing is still very much alive.


Opposite Porscave, on the south shore of L'Aber Ildut, lies Kerglonou, a peaceful marina full of charm.
Kerglonou is also a former granite quarry. An interpretation trail running alongside the aber explains the history of granite mining and quarrying in the region.


You'll arrive at the mouth of the Aber Ildut, where you'll be treated to a lovely view.

Pont Rheun

Located on the north bank of the Aber-Ildut, Manoir de Bel Air was built by Francois de Kerengar, on land he received on his marriage to Louise de Kerbescat in 1585. Construction lasted around 14 years, until 1599.
Built on a square plan around an enclosed courtyard, its architecture is typical of the fortified buildings of the Lower Middle Ages in Brittany.
Its defensive layout is explained by its proximity to the sea, a source of danger.
© Commune de Brélès

Manoir de Bel Air

Overlooking the Aber Ildut estuary, the current church is part of an enclosure. It is a very sober edifice, built in 1786.
©Patrimoine Iroise

Church of Saint-Ildut

This street is lined with the houses of the barge masters, all hidden behind their high walls. Most of these beautiful 17th and 18th century homes are topped by half-moon-shaped chimneys known as "English chimneys".


Located in the northern part of the Chenal du Four, this small Aber is an excellent stopover for yachtsmen on their way to southern Brittany or England. It's also a great base for day trips to Ouessant or the Molène archipelago on a semi-rigid
The port of Aber Ildut is a lively place, with seaweed harvesters arriving to drop off the seaweed harvested in the Iroise Sea, pleasure boats mooring at the port, and fishing trips by kayak or stand-up paddle... Kayak and bike hire at the harbour store.
The port of Lanildut has long since become the biggest seaweed unloading port on the mainland, with 40,000 to 45,000 tonnes of seaweed passing through every year, keeping the famous seaweed harvesters in business. To find out more, visit the Maison de l'Algue, where you can learn all about the history and development of this typical coastal activity.

Port of Lanildut
Getting there with Google Maps