4.3
(158)
1,158
riders
93
rides
Mountain biking around Saint-Derrien offers a network of trails through varied terrain. The region features valley roads, often alongside water bodies, and paths that explore the surroundings of historical sites like Kerjean Castle. Elevations are generally moderate, providing a mix of gentle and more challenging climbs. The landscape is characterized by a blend of open countryside and wooded sections, suitable for off-road cycling.
Last updated: June 21, 2026
5.0
(2)
43
riders
32.7km
02:42
440m
440m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
4.3
(6)
8
riders
27.3km
01:53
180m
180m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

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4.0
(5)
6
riders
18.0km
01:10
100m
100m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
8
riders
26.1km
01:50
190m
190m
Moderate mountain bike ride. Great for any fitness level. Advanced riding skills necessary.
9
riders
41.8km
03:24
560m
560m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
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Running through the winding valley of the River L'Élorn, this road offers a picturesque landscape. In 2018, the Tour de France crossed these roads.
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Magnificent road through the valley along the river 🌊 L'Élorn. Asphalt is great. The Tour de France also rode this road in 2018.
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This path runs along the stream of L'an-Doux-Kamm, and after a passage under the forest, leads to a place called Giler-Ar-Gal and its pretty Saint-Anne Chapel. This chapel, which did not suffer the ravages and destruction of the French revolution, has kept its original furniture intact. It deserves a visit.
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Beautiful castle accessible via several small roads that surround it.
1
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Nice mountain bike outing from Lesneven. 54 km good physical condition
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Dovecotes. (Round tower) These were always at the entrance of the castle or homestead and should indicate the wealth of the owner by the size and design. Pigeons were used as a food source and the feces were sold at a high price as fertilizer for the grain fields, otherwise there was no material for fertilization to improve the barren soils for sowing from the grain.
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There are over 90 mountain bike trails around Saint-Derrien listed on komoot, offering a variety of options for different skill levels.
The trails in Saint-Derrien cater to various skill levels. You'll find 26 easy routes, 61 moderate routes, and 6 more challenging routes for experienced riders.
Yes, Saint-Derrien offers several easy mountain bike trails perfect for beginners. An example is the Kerjean Castle – Kerjean Castle loop from Bodilis, which is 11.2 miles (18.0 km) long and features gentle terrain around the castle.
For experienced riders seeking a challenge, Saint-Derrien has several options. The It hurts but it's beautiful – Circuit de Saint-Anne loop from Bodilis is a moderate 26.1 miles (42.0 km) route with significant elevation gain, offering a more demanding ride.
Trail distances vary, but many routes are between 10 to 25 miles (16 to 40 km). For instance, the Plan d'eau loop from Plounéventer is 16.2 miles (26.1 km) long.
Many mountain bike trails in Saint-Derrien are designed as loops, allowing you to start and finish at the same point. This is common for routes exploring areas like the Élorn Valley or around Kerjean Castle.
The trails often pass by historical sites and natural features. You might encounter landmarks such as the Basilica of Notre-Dame du Folgoët or the Château de La Roche-Maurice. The region is also characterized by valley roads and paths near water bodies.
The area is highly rated by the komoot community, with an average score of 4.4 stars from over 140 reviews. Reviewers often praise the varied terrain, from valley roads to paths around historical castles, and the well-maintained network of trails.
Spring and autumn generally offer the most pleasant conditions for mountain biking in Saint-Derrien, with mild temperatures and less rainfall. Summer can also be good, but trails might be busier.
Winters in Saint-Derrien are typically mild, but trails can be wet and muddy, especially after heavy rain. Some routes might be less accessible due to standing water or slippery surfaces. Always check local conditions before heading out.
Yes, many of the easier and moderate routes are suitable for families, especially those with older children. Trails around Kerjean Castle, for example, offer relatively flat and scenic paths.
Parking is generally available near trailheads, especially in villages like Bodilis or Saint-Servais, which serve as common starting points for many routes. Look for designated parking areas or public car parks in these locations.


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