Fontenay Marsh Observatory – Étangs de Vert-Le-Petit loop from Vert-le-Petit
Fontenay Marsh Observatory – Étangs de Vert-Le-Petit loop from Vert-le-Petit
5.0
(21)
162
hikers
Fontenay Marsh Observatory – Étangs de Vert-Le-Petit loop from Vert-le-Petit
04:24
16.8km
120m
Hiking
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.
Last updated: June 18, 2026
Tips
Your route passes through a protected area
Please check local regulations for:
Réserve de biosphère de Fontainebleau et du Gâtinais
Waypoints
Start point
Bus stop
Get Directions
4.89 km
Étang aux Moines Observation Deck
Highlight • Viewpoint
Translated by Google •
Tip by
5.68 km
Fontenay Marsh Observatory
Highlight • Viewpoint
8.69 km
Villeroy Park Water Reservoir
Highlight • Monument
Translated by Google •
Tip by
12.0 km
The best place for a picnic
Highlight • Other
14.8 km
Vert le petit tour du lac
Highlight • Other
15.3 km
The pond
Highlight • Other
Translated by Google •
Tip by
15.4 km
The river
Highlight • Other
16.1 km
Étangs de Vert-Le-Petit
Highlight • Lake
Translated by Google •
Tip by
16.8 km
End point
Bus stop
Way Types & Surfaces
Way Types
6.06 km
3.78 km
3.60 km
3.32 km
< 100 m
Surfaces
5.44 km
5.00 km
2.76 km
2.12 km
951 m
583 m
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Elevation
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Weather
Powered by Foreca
Thursday 2 July
29°C
13°C
0 %
Additional weather tips
Max wind speed: 13.0 km/h
to get more detailed weather forecasts along your route
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Comments
One of the largest marshes in Ile-de-France, rich and protected biodiversity, silence 🤫!
Part of the marsh is closed to the public, visits are possible with a guide.
No difficulty on this hike, many benches and picnic tables are available halfway, bakery at the start
Access IDF Mobilité:
RER D Paris Juvisy Malesherbes, stop at Mennecy
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