Vert le petit tour du lac – Fontenay Marsh Observatory loop from Mennecy
Vert le petit tour du lac – Fontenay Marsh Observatory loop from Mennecy
4.9
(34)
176
hikers
Vert le petit tour du lac – Fontenay Marsh Observatory loop from Mennecy
04:27
17.2km
100m
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: August 21, 2026
Tips
Your route passes through protected areas
Please check local regulations for:
Réserve de biosphère de Fontainebleau et du Gâtinais
Waypoints
Start point
Train Station
Get Directions
3.61 km
The best place for a picnic
Highlight • Other
6.44 km
Vert le petit tour du lac
Highlight • Other
6.97 km
The pond
Highlight • Other
Translated by Google •
Tip by
7.06 km
The river
Highlight • Other
7.84 km
Le Petit Étang
Lake
8.15 km
Wildlife
Highlight • Other
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Tip by
11.5 km
Étang aux Moines Observation Deck
Highlight • Viewpoint
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12.3 km
Fontenay Marsh Observatory
Highlight • Viewpoint
15.5 km
Villeroy Park Water Reservoir
Highlight • Monument
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17.2 km
End point
Train Station
Way Types & Surfaces
Way Types
6.84 km
3.33 km
3.29 km
2.76 km
936 m
Surfaces
4.60 km
4.43 km
4.15 km
1.75 km
1.40 km
830 m
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Elevation
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Weather
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Sunday 23 August
27°C
16°C
-- %
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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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