St Martin Sur Oust: Walking Trails, Canal and Cultural Heritage

Saint-Martin-sur-Oust can be explored through a range of different themes: walks by the water and through the countryside, a designated mountain biking route, opportunities to learn fishing techniques, and historic buildings. This gives you specific points to consider when planning your trip, depending on whether you are interested in outdoor activities, observing nature or architectural history.

Walks by Étang du Petit Moulin and the canal

Two walks with different points of interest start at Étang du Petit Moulin. The route to Croix Gabriel de Villebonne takes about an hour and leads to a cross with panoramic views of Saint-Martin-sur-Oust. The Sentier Yves Rocher is 2.5 kilometres long and follows a small stream; observing the local flora and fauna is the main focus. The estimated time for the first walk and the distance of the second provide different ways to guide your choice.

The Canal de Nantes à Brest also passes through Saint-Martin-sur-Oust. A footpath makes it possible to explore the landscape. The canal and walking trails therefore offer more ways to experience the surroundings on foot: the route to Croix Gabriel de Villebonne leads to a panoramic view of the town, while the Sentier Yves Rocher follows a stream and offers the chance to observe plants and animals.

Mountain biking route with viewpoints

The Circuit des Moulins starts in Saint-Martin-sur-Oust. It is designated as a moderate 21-kilometre mountain biking route, with an estimated duration of 2 hours and 30 minutes. The route passes through green spaces and by ponds, then reaches the heights between Saint-Martin-sur-Oust and Les Fougerêts, where there are several viewpoints, and also includes a stretch through woodland. The distance, difficulty rating and estimated time help you plan how long the ride will take; the landscape description shows which sections define the route. Route conditions and information may change, so check the route details before setting out.

Chapel, château and historic dates

The Chapelle Saint-Léonard is very likely the surviving remains of a priory belonging to the Benedictine abbey of Saint-Sulpice-la-Forêt near Rennes, founded before 1162. A stone slab is set into the wall above the west door; the year engraved on it is 1651. The possible connection to the priory and the date on the slab are different clues to the chapel’s history and should not be confused with one another.

The Château de Castellan was built in 1732. The year is engraved on either side of the oculus on the front gable. The Croix des Friches dates from the 17th century; its base bears the date 1886, the year it was re-erected. These details refer to different points in time: 1732 is the date the château was built, while 1886 is the date the older cross was re-erected. These specific details help put the architectural history of Saint-Martin-sur-Oust into context, without treating the dates as equivalent.

Fishing techniques and outdoor excursions

The Atelier Pêche et Nature run by AAPPMA Pêches Loisirs de l’Oust serves Saint-Martin-sur-Oust, Les Fougerets, Peillac and Glénac. It has been running since 2017 and operates mainly during school holidays from Easter onwards. Its programme includes classroom lessons and several outdoor excursions where fishing techniques are taught. If this is relevant to your trip planning, bear in mind its seasonal focus and check the latest programme information.

The attractions and activities offer a variety of experiences: the walks include information about their duration or distance and lead to a panoramic view or follow a stream; the Circuit des Moulins combines a designated route length and estimated riding time with several types of landscape. The chapel, château and Croix des Friches, meanwhile, invite you to look out for historical connections and engraved dates. These distinctions may help you prioritise the themes that interest you when choosing a hotel in St Martin Sur Oust.

Discover more destinations

Discover more destinations: Guer, Ploërmel, Berric, Ploerdut, Mauron, Quiberon, Guégon, Saint-Laurent-Sur-Oust.

For the regional travel overview: Morbihan.