5.0
(2)
37
riders
Saint-Cyr Castle – Fountain loop from Osny
02:17
49.4km
420m
Road cycling
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride. The starting point of the route is accessible with public transport.
Last updated: April 20, 2026
Tips
Your route passes through protected areas
Please check local regulations for:
Waypoints
Start point
Train Station
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5.56 km
Mill and communal washhouse in Courcelles-sur-Viosne
Highlight • River
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9.96 km
Gare d'Us, a welcoming third place
Highlight • Other
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18.5 km
Chars Bakery and Café
Highlight • Cafe
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21.5 km
Saint-Cyr Castle
Highlight • Castle
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32.2 km
Fountain
Highlight • Other
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33.3 km
Abandoned Buildings and Forest Path in Parc naturel régional du Vexin Français
Highlight (Segment) • Structure
Do not miss the pretty cabin in a shady meadow at the edge of a pond.
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36.8 km
Saint Martin Church, Vallangoujard
Highlight • Other
42.6 km
Overview of Vexin Français roads.
Highlight • Other
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49.4 km
End point
Train Station
Way Types & Surfaces
Way Types
43.8 km
2.45 km
1.59 km
1.48 km
< 100 m
< 100 m
Surfaces
37.4 km
11.9 km
< 100 m
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Elevation
Highest point (160 m)
Lowest point (40 m)
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Weather
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Wednesday 20 May
24°C
8°C
0 %
Additional weather tips
Max wind speed: 11.0 km/h
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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.