Circuit de la Fontaine
Key facts
- Distance
- 17.0 km
- Ascent
- +95 m
- Descent
- −95 m
- Estimated time
- 4 hr
- hiking ; mtb : 1 hr 25
- Difficulty
- Difficult
- official rating
- Route
- Loop
- back to the start
Official time: 4 h 15 min
Profile and gradient
- under 10%
- 10 to 20%
- over 20%
Gradient along the route: 17.0 km under 10%. Elevation from 7 m to 42 m over 17.0 km.
Surface and path types
- Surface
- Paved 38%
- Dirt & gravel 61%
- Unknown 1%
- Path types
- Trail 17%
- Track 45%
- Road 38%
Description
Difficulty
Official rating: difficult, by Département de Loire-Atlantique.
Getting there
Start: Saint-Père-en-Retz, Saint-Père-en-Retz (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: 4 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)
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