First pick
Forêt domaniale de Versailles
Wood or forest
537 ha58.3 km of path
12 h 55 minto walk all 58.3 km of path
1.9 km north-eastfrom the center
Route de la Butte À l'ÂneRoute de SebaqueRoute des Chevreuils+5 paths
Directionsto a point inside
Photo: Langladure · CC BY-SA 3.022%woodland
Outdoors in Guyancourt · protected areas, woods and footpaths
Guyancourt has more footpaths per km² than 9 in 10 French towns
Footpaths add up to 117 km across Guyancourt (8.9 km per km²). Waymarked hiking routes add up to 8 km in Guyancourt. Mapped woodland covers 22% of Guyancourt. France has no Outdoors Grade yet: these are the figures, each beside the compared towns’ median.
Protected areas
0%
of the commune’s land
Nearest: Haute Vallée de Chevreuse Regional Nature Park, 1.9 km
Woodland
22%
of the land, mapped on OpenStreetMap
Compared town: 13%
Footpaths
117 km
8.9 km per km²
Compared town: 1.7 km per km²
Hiking routes
8.4 km
waymarked, GR and others
Compared town: 0.3 km per km²
Parks & woods
15
named, in or within 400 m of the commune
First: Forêt domaniale de Versailles
Throughout this page, the Yvelines median and the France median are the median of compared communes (those with an overall grade), each figure its own median.
What kind of place
What kind of outdoors place is Guyancourt?
Read from the data: what stands out first, good and less good.
A place of footpaths8.9 km per km² of mapped footpath, against 1.7 km per km² for the median compared town.Protected land nearbyHaute Vallée de Chevreuse Regional Nature Park is 1.9 km from the town center.
What sets Guyancourt apart: its footpaths, then protected land close by.
Against French towns
How Guyancourt compares with French towns
Each figure against the 3,798 compared French towns (communes with an overall grade): the marked bar is the town’s, the line the median. Described, not graded.
Protected areas0%Share of the land in a national park, regional nature park, nature reserve or Natura 2000 site
46out of 100
Woodland22%Share of the land mapped as forest or woods on OpenStreetMap
65out of 100
Footpaths8.9 km per km²Km of mapped footpath and track open on foot, per km² of the commune
98out of 100
Hiking routes0.6 km per km²Km of waymarked hiking routes (GR and others), per km² of the commune
69out of 100
Percentiles among compared French towns; ties count half.
Towns its size
Guyancourt has the 3rd most footpaths per km² of 41 towns its size
The 40 compared French towns nearest in population (28,496 to 31,188 residents), by km of footpath per km². Hover for each one’s protected land and woods; click for its page.
From Cachan (11.5 km per km²) to Villemomble (1.4 km per km²).
Every town in the comparison
| Town | Paths (km/km²) | Woodland | Protected | Coast | |
|---|---|---|---|---|---|
| 1 | Cachan Val-de-Marne | 11.5 | 1.2% | 0% | 155 km |
| 2 | Lyon 1er Rhône | 11.3 | 1.1% | 0% | 253 km |
| 3 | Guyancourt Yvelines | 8.9 | 22% | 0% | 145 km |
| 4 | Le Plessis-Robinson Hauts-de-Seine | 8.6 | 13% | 0% | 153 km |
| 5 | Lyon 2e Rhône | 8.3 | 0% | 0% | 251 km |
| 6 | Vandœuvre-lès-Nancy Meurthe-et-Moselle | 8.1 | 18% | 0% | 367 km |
| 7 | Saint-Cloud Hauts-de-Seine | 7.8 | 27% | 0% | 145 km |
| 8 | Clichy-sous-Bois Seine-Saint-Denis | 7.6 | 29% | 22% | 153 km |
| 9 | Tournefeuille Haute-Garonne | 7.5 | 9.4% | 0% | 153 km |
| 10 | L'Haÿ-les-Roses Val-de-Marne | 7.5 | 4% | 0% | 156 km |
| 11 | Vanves Hauts-de-Seine | 7.3 | 3.4% | 0% | 150 km |
| 12 | Villiers-le-Bel Val-d'Oise | 7 | 5.1% | 0% | 138 km |
| 13 | Ermont Val-d'Oise | 6.9 | 0% | 0% | 133 km |
| 14 | Savigny-le-Temple Seine-et-Marne | 6.5 | 15% | 0% | 183 km |
| 15 | Le Chesnay-Rocquencourt Yvelines | 6.3 | 21% | 0% | 144 km |
| 16 | Charenton-le-Pont Val-de-Marne | 5.9 | 0.7% | 0% | 155 km |
| 17 | Fresnes Val-de-Marne | 5.7 | 3.6% | 0% | 158 km |
| 18 | Malakoff Hauts-de-Seine | 5.6 | 0% | 0% | 151 km |
| 19 | Viry-Châtillon Essonne | 5.4 | 4.4% | 0% | 168 km |
| 20 | Liévin Pas-de-Calais | 4.7 | 5.2% | 0% | 74 km |
| 21 | Bois-Colombes Hauts-de-Seine | 4.6 | 0% | 0% | 141 km |
| 22 | Draveil Essonne | 4.6 | 47% | 0% | 168 km |
| 23 | Saint-Sébastien-sur-Loire Loire-Atlantique | 4.5 | 9.9% | 23% | 41 km |
| 24 | Chatou Yvelines | 4.5 | 0.3% | 0% | 138 km |
| 25 | Décines-Charpieu Rhône | 4.2 | 6.3% | 8.4% | 255 km |
| 26 | Orvault Loire-Atlantique | 3.9 | 17% | 0% | 37 km |
| 27 | Sotteville-lès-Rouen Seine-Maritime | 3.9 | 1.4% | 0% | 53 km |
| 28 | Menton Alpes-Maritimes | 3.5 | 32% | 20% | On it |
| 29 | Saint-Étienne-du-Rouvray Seine-Maritime | 3.4 | 28% | 0.3% | 53 km |
| 30 | Dieppe Seine-Maritime | 3.3 | 2.9% | 2.7% | On it |
| 31 | Agde Hérault | 3.2 | 4.4% | 22% | On it |
| 32 | Périgueux Dordogne | 3.1 | 10% | 0% | 105 km |
| 33 | Montfermeil Seine-Saint-Denis | 2.9 | 8.2% | 5.5% | 155 km |
| 34 | Cambrai Nord | 2.8 | 4.5% | 0% | 111 km |
| 35 | Bourgoin-Jallieu Isère | 2.7 | 13% | 0% | 240 km |
| 36 | Maubeuge Nord | 2.6 | 2.2% | 0.1% | 129 km |
| 37 | La Garenne-Colombes Hauts-de-Seine | 2.2 | 0% | 0% | 141 km |
| 38 | Châtellerault Vienne | 1.6 | 4.3% | 0% | 140 km |
| 39 | Orange Vaucluse | 1.5 | 8% | 2.3% | 76 km |
| 40 | Vallauris Alpes-Maritimes | 1.5 | 16% | 0% | On it |
| 41 | Villemomble Seine-Saint-Denis | 1.4 | 0.7% | 0% | 154 km |
The map
Parks, woods, footpaths & countryside
Tap a number to zoom to a park or wood. Tap a layer to hide it. The dashed line is the commune’s boundary.
Green: parks, gardens and woods mapped on OpenStreetMap, named or not.© OpenStreetMap contributors · INPN / PatriNat · IGN
Places to walk
Parks and woods to walk in, in and around Guyancourt
Named parks, gardens and woods in the commune or within 400 m, the biggest and best-pathed first: Forêt domaniale de Versailles leads, at 537 ha. Directions go to a point inside.
Parc des Sources de la Bièvre
Park or garden
12 ha3.8 km of path
50 minto walk all 3.8 km of path
1.6 km north-westfrom the center
Chemin de la LaicitéAllée de la GéométrieMail des Saules
Directionsto a point inside
Coulée Verte
Park or garden · 250 m outside the commune
3.5 ha2 km of path
25 minto walk all 2 km of path
3.9 km eastfrom the center
Saute VentCoupe BiseSerpentine des Pins+4 paths
Directionsto a point inside
Le Bois des Roussières
Wood or forest
16 ha1.3 km of path
15 minto walk all 1.3 km of path
1 km north-westfrom the center
Chemin de l'Aqueduc
Directionsto a point inside
Parc Maurice Leluc
Park or garden · 100 m outside the commune
3.8 ha0.6 km of path
10 minto walk all 0.6 km of path
2.3 km northfrom the center
Directionsto a point inside
Bois de la Grille
Wood or forest
8.4 ha1.1 km of path
15 minto walk all 1.1 km of path
Centralin the middle of Guyancourt
Traversée Coulée Verte
Directionsto a point inside
Parc de l'Ermitage
Park or garden
2 ha1.3 km of path
15 minto walk all 1.3 km of path
1 km northfrom the center
Directionsto a point inside
Bois de la Garenne
Wood or forest
6.2 ha0.7 km of path
10 minto walk all 0.7 km of path
Centralin the middle of Guyancourt
Directionsto a point inside
All 15 named parks, gardens and woods
Forêt domaniale de VersaillesWood or forest · 537 ha · 58.3 km of path
DirectionsParc des Sources de la BièvrePark or garden · 12 ha · 3.8 km of path
DirectionsCoulée VertePark or garden · 3.5 ha · 2 km of path · just outside
DirectionsLe Bois des RoussièresWood or forest · 16 ha · 1.3 km of path
DirectionsParc Maurice LelucPark or garden · 3.8 ha · 0.6 km of path · just outside
DirectionsBois de la GrilleWood or forest · 8.4 ha · 1.1 km of path
DirectionsParc de l'ErmitagePark or garden · 2 ha · 1.3 km of path
DirectionsBois de la GarenneWood or forest · 6.2 ha · 0.7 km of path
DirectionsJardin Alain ChedevillePark or garden · 1.5 ha · 0.8 km of path · just outside
DirectionsParc public ÉrasmePark or garden · 1.1 ha · 0.6 km of path · just outside
DirectionsBois du GlandWood or forest · 6.2 ha
DirectionsJardin des GogottesPark or garden · 0.8 ha
DirectionsJardin Paul et VirginiePark or garden · 0.5 ha
DirectionsEspace vert entre immeublesPark or garden · 0.3 ha
DirectionsSquare de la CulottePark or garden · 0.3 ha · just outside
DirectionsSource: © OpenStreetMap contributors (ODbL): named parks, gardens and woods; sizes are the whole site.
Protected areas
Haute Vallée de Chevreuse Regional Nature Park is the nearest protected area, 1.9 km away
The protected areas reaching the commune, and the nearest: national parks, regional nature parks, nature reserves and Natura 2000 sites.
Regional nature park
Haute Vallée de Chevreuse Regional Nature Park
1.9 km from the town center
Share of the commune’s land
Any protected area0%
Designations overlap (a regional park can hold a Natura 2000 site), so the rows don’t add up; the first counts each piece of land once.
A regional nature park is a charter between communes to look after a landscape: farming, building and hunting go on inside it.
Source: INPN / PatriNat, protected areas July 2026, Natura 2000 December 2024; shares of IGN’s commune boundary.
Footpaths and woods
Footpaths and woods in Guyancourt
Paths, bridleways, steps and tracks open on foot, and waymarked hiking routes, mapped on OpenStreetMap inside the commune; woods are mapped forest and woodland, private woods included.
Footpaths
117 km
8.9 km per km²
Hiking routes
8.4 km
waymarked: 0.6 km per km²
Woodland
22%
about 2.8 km² of mapped woods
Km per km² of the commune · mapped on OpenStreetMap
GuyancourtYvelines medianFrance median
Footpaths8.9
Hiking routes0.6
05.511 km per km²
Share of the land · mapped woods and forest
GuyancourtYvelines medianFrance median
Woodland22%
0%50%100%
That is more than in 98% of compared French towns for footpaths per km², and for woodland more than in 65% of compared French towns. Hiking routes often follow paths and lanes already counted, so the two lengths overlap: don’t add them. Every home in Guyancourt is within 800 m of a mapped park or wood, as in most French towns.
5 named hiking routes within 2 km
GR (long-distance)PR (local walk)Other named walk
GR 1112 km
PR 1413 km
PR 892.8 km
de Versailles à Verneuil12 km
Tour du lac2.6 km
GR 11 passes within 2 km of Guyancourt.
Source: © OpenStreetMap contributors (ODbL), extracts of October 25, 2026 (Geofabrik).
When to get out
The best walking months in Guyancourt: April and June to September
Météo-France’s 1991–2020 normals at Toussus le Noble, 4.3 km away, and the daylight at the town’s latitude. Outlined months have long days, highs of 15 to 30 °C and little rain for the place.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 8.7 | 10.1 | 11.7 | 13.6 | 15.2 | 16.1 | 15.8 | 14.3 | 12.5 | 10.7 | 9.1 | 8.3 |
| High (°C) | 7 | 8 | 12 | 16 | 19 | 23 | 25 | 25 | 21 | 16 | 10 | 7 |
| Rain (mm) | 55 | 47 | 50 | 50 | 68 | 55 | 53 | 58 | 52 | 61 | 61 | 66 |
February is the driest month (47 mm) and July the warmest (highs of 25 °C). 68 mm of rain falls in May, the wettest month. Frost comes on about 46 nights a year. The climate in Guyancourt →
Gardens
2 gardens to visit in Guyancourt
Named gardens in the commune.
Jardin des GogottesIn Guyancourt
DirectionsJardin Partagé des SaulesIn Guyancourt
DirectionsSource: © OpenStreetMap contributors (ODbL) and Wikidata.
Neighbors
Next to Guyancourt
The nearest towns of 2,500 or more, colored by the share of their land in protected areas.
Voisins-le-BretonneuxMontigny-le-BretonneuxSaint-Cyr-l'ÉcoleBucFontenay-le-FleuryBois-d'ArcyGuyancourt
Under 1%1–10 %10–25 %25–50 %50 %+
| Town | Protected | Woodland | Paths (km/km²) |
|---|---|---|---|
| Guyancourt | 0% | 22% | 8.9 |
| Voisins-le-Bretonneux 10,624 · 1.8 km | 5.4% | 8.8% | 13.8 |
| Montigny-le-Bretonneux 32,465 · 2.2 km | 4.9% | 18% | 10 |
| Saint-Cyr-l'École 21,268 · 3.4 km | 0% | 7.8% | 6.3 |
| Buc 5,816 · 4.4 km | 0% | 45% | 5.6 |
| Fontenay-le-Fleury 13,680 · 4.5 km | 0% | 8% | 3.3 |
| Bois-d'Arcy 16,586 · 4.5 km | 0% | 38% | 7.4 |
Buc and Bois-d'Arcy are more wooded.
How to read these numbers
What this data can and can’t tell you
- Protected areas. National-park cores, national parks’ outer areas, regional nature parks, nature reserves and Natura 2000 sites, from INPN. A national park’s core is strictly protected; its outer area and a regional park are charters between communes, not bans. Designations overlap, so the total counts each piece of land once.
- Woodland. Forest and woods as OpenStreetMap maps them, private woods included: woods nobody has mapped are missing, and a mapped wood isn’t necessarily open to walkers.
- Footpaths and hiking routes. Footpaths, bridleways, steps and tracks open on foot, then waymarked hiking routes (GR and others) measured apart. A route often follows a path or lane already counted: the two overlap. Paths nobody has mapped are missing.
- Green space nearby. The share of residents (INSEE’s 200 m grid) within 800 m, as the crow flies, of a mapped park, garden or wood edge. It measures nearness, not a way in. Guadeloupe and French Guiana have no grid: their pages say whether the town center is within 800 m.
- The coast. The straight-line distance from the town center to OpenStreetMap’s coastline, which follows the tide line into estuaries. A commune is on the coast when the coastline crosses its boundary.
- No grade yet. U.S. and UK towns have an Outdoors Grade; French towns don’t yet. Each figure is set beside the median of compared communes (those with an overall grade) in the département and in France, each figure its own median.
Questions about the outdoors in Guyancourt
Is Guyancourt in a national or regional nature park?
No. The nearest protected area is Haute Vallée de Chevreuse Regional Nature Park, 1.9 km from the town center.
Are there good walks in Guyancourt?
OpenStreetMap maps 117 km of footpaths and tracks open on foot in the commune, 8.9 km per km² (the median compared town: 1.7 km per km²); 8 km of waymarked hiking routes cross it.
How much of Guyancourt is woodland?
22% of the commune is mapped woodland, private woods included; the median compared French town has 13%.
Is Guyancourt near the sea?
No: the coast is 145 km from the town center, as the crow flies.
When is the best time for walking in Guyancourt?
April and June to September: long days, mild highs and little rain, from Météo-France’s 1991–2020 normals at the nearest suitable station.
Why is there no Outdoors Grade for French towns?
TownRatings grades the outdoors in the U.S. and the UK; the French figures are new and not graded yet. This page sets each one beside the median compared French town instead.
Sources: INPN / PatriNat (protected areas 2026, Natura 2000 2024) · © OpenStreetMap contributors, ODbL (paths, hiking routes, woods, coast, gardens) · INSEE, Filosofi 2021 200 m grid (residents) · IGN Admin Express (boundaries) · Météo-France normals 1991–2020 · Medians and percentiles: TownRatings, over compared French towns, updated November 9, 2026. Under the Licence Ouverte / Open Licence 2.0 (Etalab).
Contains public sector information under the Licence Ouverte / Open Licence 2.0 (Etalab): INSEE, DGFiP, the Interior Ministry’s statistics service (SSMSI), the Ministry of Education (DEPP), the Health Ministry’s statistics service (DREES) and the Housing Ministry (Carte des loyers). Commune boundaries: IGN Admin Express.