Highlight • Other
Tascon Causeway
Mountain biking
5.0
(31)
Road cycling
4.5
(9)
The Radier de Tascon, also known as the passage du Rodu, is a unique submersible causeway connecting the mainland of Saint-Armel to the enchanting Ile Tascon within the picturesque Gulf of Morbihan, Brittany, France. This remarkable natural feature, which sits at sea level, offers a temporary gateway to one of the region's largest islands, known for its preserved landscapes and rich biodiversity.
Visitors are consistently drawn to the Radier de Tascon for the adventurous experience of crossing the causeway at…
This Highlight is in a protected area
Please check local regulations for:
Réserve nationale de chasse et faune sauvage du Morbihan
Tips
July 18, 2020
Mountain biking
There is a delay of about 2 hours between the high tide and that of the golf course
•June 11, 2019
Road cycling
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Nearby routes
Best routes near Tascon Causeway
4.4
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34
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Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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01:36
110m
110m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
4.0
(5)
14
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Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
Details
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Sunday 15 March
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5°C
0 %
Additional weather tips
Max wind speed: 17.0 km/h
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Frequently Asked Questions
What is the typical length and difficulty of hiking trails on Ile Tascon?
The trails on Ile Tascon are generally easy, following the coastline with a mostly flat relief, as the island's highest point is barely 15 meters above sea level. A full loop around the island, including the main causeway, is approximately 6-7 kilometers, making it suitable for most fitness levels and a pleasant walk for families. There are no particularly challenging sections, making it ideal for beginner hikers.
Are there specific viewpoints or natural features to look out for on Ile Tascon?
Absolutely. Beyond the unique experience of crossing the Radier de Tascon itself, the island offers several points of interest. Look for the second, smaller 200-meter sandy causeway at the southern tip of Ile Tascon, which leads to the protected islet of Enezy. The eastern cove is also a significant natural feature, hosting the second-largest bed of dwarf eelgrass in the Gulf of Morbihan, a Special Area of Conservation. For wildlife enthusiasts, this area is a haven for birdwatching, especially from November to January.
Is there parking available near the Radier de Tascon, and does it get crowded?
Yes, there is parking available near the mainland access point to the Radier de Tascon in Saint-Armel. While the intro mentions planning your visit, it's important to note that parking can fill up quickly, especially during peak season or on sunny weekends when the tide is favorable. Arriving early in the morning is highly recommended to secure a spot and avoid crowds.
How can I reach Radier de Tascon using public transport?
Reaching Radier de Tascon directly by public transport can be challenging as it's a somewhat remote coastal location. The nearest major town is Vannes, which has train and bus connections. From Vannes, you would likely need to arrange for a taxi or a local bus service to Saint-Armel, and then potentially walk or cycle the remaining distance to the causeway. Checking local bus schedules for Saint-Armel from Vannes would be the best first step.
What are the seasonal considerations for visiting Radier de Tascon, especially in winter?
While the intro highlights the best time to visit for a full experience (low tide), seasonal considerations are important. Winter (November to January) is particularly excellent for birdwatching, as the eastern cove becomes a significant habitat for thousands of geese, ducks, and waders. However, weather conditions can be colder and windier, and days are shorter. Always check tide times and local weather forecasts regardless of the season. The causeway is accessible year-round at low tide.
Is Radier de Tascon suitable for families with young children?
Yes, Radier de Tascon is very family-friendly. The intro mentions it's a memorable outing for all ages. The flat terrain of Ile Tascon makes for easy walking or cycling, even for younger children. The adventure of crossing the causeway at low tide is exciting for kids, and the opportunity to explore a unique island environment, observe wildlife, and even visit a local farm provides engaging activities for the whole family. Just ensure you plan your visit around the tide schedule for safe passage.
Are dogs allowed on Ile Tascon and the Radier de Tascon causeway?
Generally, dogs are permitted on the Radier de Tascon causeway and on Ile Tascon, but they should be kept on a leash to protect the island's sensitive natural environment and wildlife, especially during bird nesting seasons. As the island is home to a working farm and a Natura 2000 protected area, responsible pet ownership is crucial. Always clean up after your dog.
Are there any cafes, restaurants, or accommodation options near Radier de Tascon?
Radier de Tascon is located in a more rural, preserved area. While there might not be numerous options directly at the causeway, the nearby commune of Saint-Armel will offer some local cafes and restaurants. For a wider selection of dining and accommodation, you would need to venture to larger towns in the Gulf of Morbihan, such as Vannes, which is about 16 km away. On Ile Tascon itself, you can visit the local farm, "la ferme de l'île de Tascon," to purchase seasonal produce.
Are there any permits required for activities like hiking or fishing on Ile Tascon?
No specific permits are generally required for hiking or exploring the public access areas of Ile Tascon. The island is open for visitors to enjoy its trails and natural beauty. However, if you plan on fishing in the surrounding waters, you should check local regulations and obtain any necessary fishing licenses from the relevant French authorities, as rules can vary for coastal and marine areas, especially within a protected gulf environment like Morbihan.
How long does it take to walk across the Radier de Tascon causeway itself?
The Radier de Tascon causeway is approximately 400 meters long. Walking across it typically takes about 5-10 minutes, depending on your pace and whether you stop to take photos. It's a relatively short and straightforward crossing, but the experience is unique due to its tidal nature.
What is the history of Ile Tascon and the Radier de Tascon?
Ile Tascon has a rich history, having been inhabited since prehistoric times. While the exact construction date of the Radier de Tascon causeway isn't detailed, its existence reflects a long-standing connection between the island and the mainland, vital for the community and agricultural activities. The island remains one of the last cultivated islands in the Gulf, with a farming family, the Le Menach family, raising cows there for four generations, maintaining a traditional way of life.