Circuit des Marais (Brains)
Key facts
- Distance
- 12.9 km
- Ascent
- +57 m
- Descent
- −57 m
- Estimated time
- 3 hr
- hiking ; mtb : 1 hr
- Difficulty
- Moderate
- official rating
- Route
- Loop
- back to the start
Official time: 3 h 15 min
Profile and gradient
- under 10%
- 10 to 20%
- over 20%
Gradient along the route: 12.9 km under 10%. Elevation from 2 m to 27 m over 12.9 km.
Surface and path types
- Surface
- Paved 28%
- Dirt & gravel 72%
- Path types
- Trail 6%
- Track 66%
- Road 28%
Description
Difficulty
Official rating: moderate, by Département de Loire-Atlantique.
Getting there
Start: Brains, Brains (44).
Sources
- Track: Département de Loire-Atlantique, PDIPR, Licence Ouverte 2.0, Licence Ouverte 2.0 (Etalab) (data.loire-atlantique.fr/explore/dataset/224400028_itineraires-de-promenade-et-de-randonnee-en-loire-atlantique-pdipr/). Time estimated by GPX Path with the Mac app rule, breaks not included.
- Official time: 3 h 15 min, data.loire-atlantique.fr
- Surface and path types: © OpenStreetMap contributors, ODbL, extract of 28 October 2026, matched to the track every 10 m (openstreetmap.org/copyright)
Nearby tracks

Plan IGN © IGN 2026Circuit des Villages (Saint-Jean-de-Boiseau)Pays de la Loire, Saint-Jean-de-Boiseau (44) · LoopOfficial rating by Département de Loire-Atlantique
Plan IGN © IGN 2026 · track © OpenStreetMapSentier Bocage et MaraisPays de la Loire, Brains (44) · Point to point
Plan IGN © IGN 2026Les Sables RougesPays de la Loire, Port-Saint-Père (44) · LoopOfficial rating by Département de Loire-Atlantique
Plan IGN © IGN 2026Circuit des Coteaux de la MontagnePays de la Loire, La Montagne (44) · LoopOfficial rating by Département de Loire-Atlantique
Plan IGN © IGN 2026Circuit de la LandePays de la Loire, Saint-Léger-les-Vignes (44) · LoopOfficial rating by Département de Loire-Atlantique
Plan IGN © IGN 2026Circuit des Moulins (Bouaye)Pays de la Loire, Bouaye (44) · LoopOfficial rating by Département de Loire-Atlantique
