Circuit l'Ognon
Key facts
- Distance
- 25.1 km
- Ascent
- +64 m
- Descent
- −66 m
- Estimated time
- 5 hr 45
- hiking ; mtb : 1 hr 55
- Difficulty
- Difficult
- official rating
- Route
- Loop
- back to the start
Official time: 6 h
Profile and gradient
- under 10%
- 10 to 20%
- over 20%
Gradient along the route: 25.1 km under 10%. Elevation from 2 m to 22 m over 25.1 km.
Surface and path types
- Surface
- Paved 26%
- Dirt & gravel 74%
- Path types
- Trail 19%
- Track 52%
- Road 29%
Description
Difficulty
Official rating: difficult, by Département de Loire-Atlantique.
Getting there
Start: Pont-Saint-Martin, Pont-Saint-Martin (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: 6 h, 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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