05:33
132km
950m
Road cycling
This difficult 82.1-mile road cycling loop through the Parc Naturel Régional des Marais du Cotentin offers diverse terrain and marsh views.
Last updated: February 26, 2026
Tips
Your route passes through protected areas
Please check local regulations for:
Waypoints
Start point
Parking
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54.6 km
Highlight • Castle
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66.5 km
Highlight • Other
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95.8 km
Highlight • Cycleway
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103 km
Highlight (Segment) • Other
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132 km
End point
Parking
Way Types & Surfaces
Way Types
115 km
8.25 km
6.58 km
2.08 km
< 100 m
Surfaces
129 km
2.98 km
< 100 m
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Elevation
Highest point (120 m)
Lowest point (0 m)
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Weather
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Thursday 28 May
25°C
17°C
0 %
Additional weather tips
Max wind speed: 10.0 km/h
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This route was planned by komoot.
This challenging racebike loop is approximately 132 km long with about 950 meters of elevation gain. It typically takes around 5 hours and 33 minutes to complete, requiring very good fitness.
The terrain is quite varied. You'll find flat stretches, especially through the marshes and along river towpaths. However, the route also features gentle slopes and hilly areas, particularly near Valognes or Saint-Sauveur-le-Vicomte, offering more challenging climbs. The surfaces are mostly well-paved, making it suitable for road cycling.
No, this specific loop is rated as difficult and requires very good fitness due to its length (132 km) and significant elevation gain (950 meters). Beginners might find sections of the wider Parc Naturel Régional des Marais du Cotentin et du Bessin more suitable for easier rides.
The route offers picturesque countryside, lush valleys, and the distinctive wetlands of the Regional Natural Park. You'll pass by the historic Saint-Sauveur-Le-Vicomte Castle, enjoy Breathtaking view of the Marais de l'Angle, and cycle through Isigny-sur-Mer. The Traversée du Grand Marais is another notable section.
The marshes are vibrant and change with the seasons, making spring and autumn particularly scenic for nature observation, especially during bird migration. Summer offers warmer, longer days, but can be busier. Always check local weather conditions before you go.
While specific parking spots for this exact loop aren't detailed, Saint-Lô itself offers various parking options. As the route is a loop, you can typically start and finish in Saint-Lô or any convenient point along the route that offers parking. Consider checking local tourism websites like manche-tourism.com for up-to-date parking information in Saint-Lô or nearby towns.
Generally, there are no specific permits or entrance fees required for cycling on public roads and designated cycle paths within the Parc Naturel Régional des Marais du Cotentin et du Bessin. However, always respect local regulations, especially concerning protected natural areas and private property.
While cycling on public roads, dogs are generally permitted if kept under control. However, as this is a racebike route, it's primarily designed for cyclists. If you plan to bring a dog, ensure it can keep up safely and is accustomed to long distances and road conditions. Always check specific rules for any natural reserves or private lands you might pass through.
Yes, sections of this route are part of larger cycling networks. You might find yourself on parts of 'Les Marais de l'Aure', 'Circuit vélo des Marais', or even 'La VéloWestNormandy: des Plages du Débarquement au Mont-Saint-Michel'. The route also touches upon segments of the EuroVelo 4 (La Vélomaritime).
Given the length and difficulty, you should bring a well-maintained racebike, appropriate cycling attire, a helmet, plenty of water and snacks, a repair kit (spare tube, pump, tools), navigation device (like a GPS or komoot app), and sun protection. Weather can change, so layers are advisable.
Yes, the route passes through several towns and villages, including Isigny-sur-Mer, where you can find cafes, bakeries, and restaurants to refuel. It's always a good idea to carry some snacks and water, especially on longer stretches between towns.
The Parc Naturel Régional des Marais du Cotentin et du Bessin is known for its rich biodiversity. You might spot various bird species, especially in the marshlands, as it's a significant area for migratory birds. Keep an eye out for local farm animals like sheep and horses in the meadows, and occasionally, you might even see harbor seals in specific coastal areas of the wider park.