La biodiversité est reine aux lacs de l'Essonne
Key facts
- Distance
- 9.9 km
- Ascent
- +50 m
- Descent
- −34 m
- Estimated time
- 30 min
- road cycling
- Difficulty
- Not rated
- Route
- Loop
- back to the start
Profile and gradient
- under 10%
- 10 to 20%
- over 20%
Gradient along the route: 9.9 km under 10%. Elevation from 32 m to 70 m over 9.9 km.
Surface and path types
- Surface
- Paved 34%
- Dirt & gravel 62%
- Unknown 4%
- Path types
- Trail 73%
- Track 3%
- Road 24%
Description
Difficulty
No official rating for this track: we do not make one up.
Getting there
Start: Gare de Grigny-centre, Grigny (91).
Sources
- Track: Grand Paris Sud, Licence Ouverte 2.0, Licence Ouverte 2.0 (Etalab) (sortir.grandparissud.fr/actualites/balade-a-velo-n-4-la-biodiversite-est-reine-aux-lacs-de-l-essonne). Time estimated by GPX Path with the Mac app rule, breaks not included.
- Surface and path types: © OpenStreetMap contributors, ODbL, extract of 28 October 2026, matched to the track every 10 m (openstreetmap.org/copyright)
- Official elevation gain: 50 m, Grand Paris Sud
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