Circuit Hermeland
Key facts
- Distance
- 17.1 km
- Ascent
- +150 m
- Descent
- −154 m
- Estimated time
- 4 hr 10
- hiking ; mtb : 1 hr 30
- Difficulty
- Difficult
- 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: 17.1 km under 10%. Elevation from 9 m to 59 m over 17.1 km.
Surface and path types
- Surface
- Paved 64%
- Dirt & gravel 31%
- Unknown 5%
- Path types
- Trail 78%
- Track 1%
- Road 21%
Difficulty
Official rating: difficult, by Département de Loire-Atlantique.
Getting there
Start: Saint-Herblain, Saint-Herblain (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)
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