4.3
(119)
938
riders
58
rides
Mountain biking around Sixt-Sur-Aff offers routes through varied terrain, characterized by river valleys, open countryside, and historical sites. The region features gentle elevation changes, making it suitable for different skill levels. Trails often follow the course of the Aff river or lead through rural landscapes. The area provides a mix of natural beauty and cultural points of interest for mountain bikers.
Last updated: October 7, 2026
4.0
(5)
50
riders
35.2km
03:05
380m
380m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
4.5
(2)
32
riders
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

3.6
(8)
60
riders
30.6km
02:12
280m
280m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
5.0
(3)
13
riders
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
17
riders
67.1km
04:21
410m
410m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
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Sacred space, Saint-Just was frequented by Neolithic people for several millennia. Our distant ancestors settled on these dry moors to form a major complex of megalithic monuments, the second most important in Brittany, after Carnac. On a route of about 6km you can discover various alignments bearing strange names often linked to a local legend. The path can be walked, run or even cycled across a moor that offers no shade or shelter. A magical and fascinating place in every respect
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Considered an ancient Roman road, this paved route, very convex in shape, may predate the Gallo-Roman period. 19th-century scholars saw it as the road connecting Nantes, capital of the Namnetes' territory, to Corseul, capital of the Coriosolites' territory. It was used in the Middle Ages and allowed circulation in the marsh near the ford of Beslé. It is a shame that this route is not sufficiently highlighted, particularly due to vegetation overgrowth at certain times of the year.
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In 832, Conuvoion, a Breton monk, founded the Abbey of Saint-Sauveur in Redon with the support of the Carolingian Emperor Louis the Pious. A small rural community slowly grew up around the abbey. During the Middle Ages, the town benefited from its location on the Vilaine River, as trade goods could be transported upstream to Redon on ocean-going vessels. There, the goods were transshipped and transported further on inland waterway barges towards Rennes, the capital of Brittany. In the 19th century, Redon experienced another period of prosperity with the construction of the Nantes-Brest Canal. Even today, the old shipowners' houses and the large harbor basin bear witness to its history as a trading port.
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Very beautiful circuit starting from Missillac in the direction of Vilaine, passing successively through Thehillac, Etang Aumée, Avessac and Redon on secondary roads where there is very little traffic.
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Redon has managed to retain its quiet, small-town character, despite its intense activity (and traffic). Following the floods of 2024, the campsite is closed. The pedestrian street is pleasant and not overcrowded with shops. Just what you need. A visit to the port is also a pleasant experience.
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It's hard to see this mill. It's overgrown with vegetation, making it almost invisible. It's a shame it's not more prominently displayed.
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A "treidelpfad" (towpath) that runs alongside the river or canal's bed was an essential part of the transport infrastructure in earlier times. Before ships could be powered by motors, horses walked along the bank, pulling the boat against the current. This was called "treideln" (towing), and this is how the towpaths got their name, which has been passed down to this day. Where these paths, located directly along the bank, have been preserved, they are popular with hikers and cyclists.
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There are over 50 mountain bike trails around Sixt-Sur-Aff, offering a variety of options for different skill levels. This includes 15 easy routes, 37 moderate routes, and a couple of more challenging trails.
Yes, Sixt-Sur-Aff offers several family-friendly mountain bike routes, particularly among the 15 easy trails available. These routes typically feature gentle elevation changes and follow scenic paths through the countryside, suitable for riders of varying ages and abilities. Look for trails with shorter distances and minimal technical sections.
The mountain bike trails around Sixt-Sur-Aff are characterized by varied terrain, including paths through river valleys, open countryside, and historical sites. You'll encounter gentle elevation changes, making many routes accessible, often following the course of the Aff river or winding through rural landscapes.
Yes, many of the mountain bike routes in Sixt-Sur-Aff are designed as loops. A popular option is the Étang du Val – Alignments du Moulin loop from Saint-Just, a moderate 25.4 km trail that takes you through varied landscapes and past significant sites.
Many trails incorporate historical sites. For instance, the Alignments du Moulin – Megaliths of Saint-Just loop from Saint-Just explores ancient megalithic sites. You can also find highlights like the Alignments du Moulin and the Saint Nicholas of Myra Church near various routes, offering cultural points of interest during your ride.
The best season for mountain biking in Sixt-Sur-Aff is typically from spring through autumn (April to October). During these months, the weather is generally mild and pleasant, and the trails are usually dry and in good condition. Summer offers longer daylight hours, while spring and autumn provide beautiful scenery with fewer crowds.
For a potentially less crowded experience, consider exploring some of the routes that venture deeper into the rural landscapes away from the more popular starting points. The Étang du Val – Canut Valley Road loop from Sixt-sur-Aff offers a scenic ride through the Canut Valley, providing a chance to discover quieter sections of the region.
The mountain bike routes in Sixt-Sur-Aff are highly rated by the komoot community, with an average score of 4.3 stars from over 100 reviews. Riders often praise the varied terrain, the mix of natural beauty and cultural points of interest, and the well-maintained paths that cater to different skill levels.
Yes, several trails provide excellent views of the Aff river. The Bridge over the Aff in La Gacilly – View of the Aff footbridge loop from La Gacilly is a moderate route specifically designed to showcase the river and its footbridges, winding through the local landscape.
The rural landscapes and river valleys around Sixt-Sur-Aff provide opportunities for wildlife spotting. Keep an eye out for local bird species, small mammals, and various flora as you ride through the natural areas. Early mornings or late afternoons often offer the best chances for sightings.
While many routes are moderate, there are a couple of more challenging options for experienced riders. For example, the Chapelle St Laurent – Saint-Marcellin Chapel loop from Renac is classified as difficult, offering a longer distance and potentially more demanding sections for those seeking a greater challenge.
Trailheads and parking are typically available near the starting points of many routes, often in or near the villages like Saint-Just, La Gacilly, Renac, or Sixt-sur-Aff itself. Specific parking information can usually be found on individual route pages on komoot, or by checking local signage upon arrival.


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