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Hiking Trail recommended route Hiking Trail  · Yvelines

Nature hike

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OTI Saint Germain Boucles de Seine Verified partner 
  • The Château du Pont in Louveciennes
    The Château du Pont in Louveciennes
    Photo: OTI Saint Germain Boucles de Seine

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    This route lets you discover the natural riches of our parks and forests! In Marly-le-Roi, you follow the GR1 which takes you from Marly park to the forest. The route continues through the Saint Germain forest and its historical remains.
    moderate
    Distance 15.1 km
    4:05 h
    122 m
    151 m
    180 m
    75 m
    This route lets you discover the natural riches of our parks and forests! In Marly-le-Roi, you follow the GR1 which takes you from Marly park to the forest. The route continues through the Saint Germain forest and its historical remains.
    Difficulty
    moderate
    Overall difficulty
    moderate

    Derived from the technical difficulty and the stamina requirements.

    Experience
    Landscape
    Highest point
    180 m
    Lowest point
    75 m
    Best time of year
    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Track types

    Asphalt 21.09%Dirt road 6.03%Forested/wild trail 1.10%Path 49.27%Road 5.39%Unknown 17.09%
    Asphalt
    3.2 km
    Dirt road
    914 m
    Forested/wild trail
    167 m
    Path
    7.5 km
    Road
    816 m
    Unknown
    2.6 km
    Show elevation profile

    Safety information

    Emergency number: 112

    Tips and suggestions

    Advice from the National Forest Office before setting off:

    • Check the weather: the forest is dangerous in bad weather, with increased risks of falling branches or trees.

    • Wear appropriate clothing, good shoes, bring water and a snack.

    • Remember that the phone network does not cover everywhere.

    • Take a map and learn how to navigate for greater safety.

    • Reduce the risk of tick bites, which can be dangerous, by wearing clothing that covers arms and legs. In case of a bite, use a tick remover or go to the pharmacist. Consult your doctor if redness appears around the bite area.

    • Some caterpillars (pine and oak processionary) are irritating. Protect yourself!

    • Do not enter protected areas, renewing plots, forestry sites, or hunting zones; respect the signs.

    Roadbook

    Departure from Louveciennes Transilien station.

    • Upon exiting the station, turn right onto rue du général de Gaulle, continue straight at the crossroads, then cross rue du général de Gaulle to reach rue du Regard (one-way street).

    • Continue on rue Carnot, turn left onto rue du Général Leclerc, then left onto rue du Pont. Pass near Château du Pont and a reproduction of a Berthe Morisot painting.

    • Continue on rue du Pont, at the intersection turn left onto chemin de l’Etang. At the edge of the Louveciennes woods, take the path on your right and continue on this trail to chemin de la Chasse du Roi. At the second intersection, turn left onto rue du Maréchal Joffre.

    • Head up rue du Maréchal Joffre to the crossroads. Use the pedestrian crossing to cross route de Versailles.

    • Turn left. Behind the walls you pass are the Louveciennes reservoirs. Turn right onto chemin des deux portes (beware of Marly park's opening hours). Pass near the Museum of the Royal Domain of Marly. From here you can follow the GR1 waymarks.

    • At the first intersection, turn right and continue on Chemin des deux portes.

    At the park's forestry house, enjoy the pretty view of Marly park, located below.

    • Follow the GR1 waymarks to route de Saint Cyr, D7. Cross using the pedestrian crossing then turn left following the GR1 signs.

    • Continue to route des Muses. The first section of this route ends here; to reach Saint-Nom-la-Bretèche station, turn right. Distance: 9 km.

    • Cross route des Muses and follow the GR1 waymarks. Pass near Croix Saint-Michel, offering a lovely viewpoint.

    • Cross the D98 and continue on the GR1 to route Dauphine.

    • Continue on the GR1, pass near a hunting table, reach route des Princesses and turn right.

    • Follow route des Princesses to the Princesses greenhouses and the Saint-Germain-en-Laye agricultural high school.

    • Continue on route des Princesses, passing near the Plâtrières site. Cross rue du président Roosevelt and keep following route des Princesses.

    • Pass near the former Jonction equestrian club; at the roundabout, take the rightmost path. At the second intersection, turn right onto the path leading to rue Turgot.

    • Turn left onto rue Turgot which leads to Pereire station where Quai des Possibles is also located.

    • Arrive at Saint-Germain-en-Laye Pereire station. From here you can reach the Saint-Germain-en-Laye RER station.

    Rest stop
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    St. Martin's Church
    Musée du Domaine royal de Marly
    Domaine de Marly

    Directions

    Consider carpooling

    Coordinates

    DD
    48.860882, 2.122979
    DMS
    48°51'39.2"N 2°07'22.7"E
    UTM
    31U 435674 5412361
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    Get there by train, car, bike, or on foot!

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    Difficulty
    moderate
    Overall difficulty
    moderate

    Derived from the technical difficulty and the stamina requirements.

    Distance
    15.1 km
    Duration
    4:05 h
    Ascent
    122 m
    Descent
    151 m
    Highest point
    180 m
    Lowest point
    75 m
    Linear route Scenic Fauna

    Weather at the starting point

    10-day forecast

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