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Campagne d'Orsay sous la neige (Tarkhov)Photo: Nikolay Tarkhov · Public domain
27%woodland
Outdoors in Orsay · protected areas, woods and footpaths

Orsay has more footpaths per km² than 9 in 10 French towns

54 km of footpaths cross Orsay (7.3 km per km²). Waymarked hiking routes add up to 22 km in Orsay. Mapped woodland covers 27% of Orsay. 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, 2.6 km
Woodland
27%
of the land, mapped on OpenStreetMap
Compared town: 13%
Footpaths
54 km
7.3 km per km²
Compared town: 1.7 km per km²
Hiking routes
22 km
waymarked, GR and others
Compared town: 0.3 km per km²
Parks & woods
21
named, in or within 400 m of the commune
First: Bois de la Guyonnerie

Throughout this page, the Essonne 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 Orsay?

Read from the data: what stands out first, good and less good.

What sets Orsay apart: its footpaths, then its hiking routes.

Against French towns

How Orsay 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
NoneMedian 0.1%100
22out of 100
Woodland27%Share of the land mapped as forest or woods on OpenStreetMap
Median 13%0100
73out of 100
Footpaths7.3 km per km²Km of mapped footpath and track open on foot, per km² of the commune
Median 1.7 km per km²08+
97out of 100
Hiking routes3 km per km²Km of waymarked hiking routes (GR and others), per km² of the commune
NoneMedian 0.3 km per km²3+
99out of 100

Percentiles among compared French towns; ties count half.

Towns its size

Orsay has the 6th most footpaths per km² of 41 towns its size

The 40 compared French towns nearest in population (15,925 to 17,064 residents), by km of footpath per km². Hover for each one’s protected land and woods; click for its page.

Orsay 7.3
VauréalGaillac
06.513 km per km²

From Vauréal (12.3 km per km²) to Gaillac (0.2 km per km²).

Every town in the comparison
TownPaths (km/km²)WoodlandProtectedCoast
1Vauréal Val-d'Oise12.319%0%121 km
2Noisiel Seine-et-Marne9.532%0.1%162 km
3Saint-Leu-la-Forêt Val-d'Oise8.536%0.5%131 km
4Marly-le-Roi Yvelines7.637%0%138 km
5Bois-d'Arcy Yvelines7.438%0%140 km
6Orsay Essonne7.327%0%157 km
7Le Pecq Yvelines7.12.7%0%136 km
8Les Clayes-sous-Bois Yvelines6.335%0%137 km
9Le Pré-Saint-Gervais Seine-Saint-Denis5.80%0%149 km
10Verneuil-sur-Seine Yvelines5.424%0%123 km
11Saint-Cyr-sur-Loire Indre-et-Loire59.4%1.9%184 km
12Lons-le-Saunier Jura4.98.8%1.8%356 km
13Sainte-Luce-sur-Loire Loire-Atlantique4.712%11%45 km
14Le Bourget Seine-Saint-Denis4.52.2%0%145 km
15Domont Val-d'Oise4.528%0%133 km
16Landerneau Finistère4.418%1.2%On it
17Trélazé Maine-et-Loire3.913%0%122 km
18Saint-Jean-de-la-Ruelle Loiret3.54.9%3%203 km
19Mennecy Essonne3.319%8.2%180 km
20Ambérieu-en-Bugey Ain3.349%0%281 km
21Saint-Julien-en-Genevois Haute-Savoie3.213%0%286 km
22Firminy Loire325%0%204 km
23Sin-le-Noble Nord2.712%0.1%90 km
24Rumilly Haute-Savoie2.318%0.7%262 km
25Coulommiers Seine-et-Marne216%0%183 km
26Sedan Ardennes217%0%222 km
27Saint-Amand-les-Eaux Nord1.943%100%93 km
28Montceau-les-Mines Saône-et-Loire1.86.6%0%347 km
29La Baule-Escoublac Loire-Atlantique1.79.6%37%0.8 km
30Valserhône Ain1.759%19%292 km
31Guérande Loire-Atlantique1.57.1%76%On it
32Verdun Meuse1.421%3.6%290 km
33Montbrison Loire1.35.7%4.8%227 km
34Les Herbiers Vendée1.16.5%0%62 km
35Cestas Gironde158%0%28 km
36Château-Gontier-sur-Mayenne Mayenne0.93.1%0%102 km
37Châteaurenard Bouches-du-Rhône0.82.1%8.3%47 km
38Mauguio Hérault0.81.4%49%On it
39Pamiers Ariège0.616%1.1%118 km
40Loire-Authion Maine-et-Loire0.410%100%130 km
41Gaillac Tarn0.24.9%0%132 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.

12345678
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 Orsay

Named parks, gardens and woods in the commune or within 400 m, the biggest and best-pathed first: Bois de la Guyonnerie leads, at 241 ha. Directions go to a point inside.

First pick

Bois de la Guyonnerie

Wood or forest
241 ha24.3 km of path
5 h 25 minto walk all 24.3 km of path
5.1 km north-westfrom the center
Chemin des Fonds FanetsRoute de Chasse des Plants de MoulonChemin de la Crête+5 paths
Directionsto a point inside

Parc Nord

Park or garden · 90 m outside the commune
39 ha6.4 km of path
1 h 25 minto walk all 6.4 km of path
1.8 km westfrom the center
La Coulée VerteCoulée Verte
Directionsto a point inside

Forêt départementale du Bois des Gelles

Wood or forest · 380 m outside the commune
38 ha3.1 km of path
40 minto walk all 3.1 km of path
2.1 km eastfrom the center
Chemin Rural Numéro 33 de la Plesse aux Gelles
Directionsto a point inside

Bois Persan

Wood or forest
32 ha3.7 km of path
50 minto walk all 3.7 km of path
0.7 km southfrom the center
Directionsto a point inside

Bois de la Grille Noire

Wood or forest
33 ha3.4 km of path
45 minto walk all 3.4 km of path
0.9 km eastfrom the center
Avenue d'accès à l'ancienne station d'Orsay-État
Directionsto a point inside

Bois de la Cyprenne

Wood or forest
28 ha3.6 km of path
50 minto walk all 3.6 km of path
Centralin the middle of Orsay
Chemin du Pont des Sapins
Directionsto a point inside

Bois de la Vauve

Wood or forest
35 ha2.3 km of path
30 minto walk all 2.3 km of path
2 km north-eastfrom the center
Sentier Edme François JomardVoie de l'OuestChemin Treuille de Beaulieu+3 paths
Directionsto a point inside

Bois de Corbeville

Wood or forest
21 ha1.5 km of path
20 minto walk all 1.5 km of path
1.8 km northfrom the center
Allée de la ChâtaigneraieChemin du Clos des MûriersChemin du Guichet à Corbeville
Directionsto a point inside
All 21 named parks, gardens and woods
Bois de la GuyonnerieWood or forest · 241 ha · 24.3 km of path
Directions
Parc NordPark or garden · 39 ha · 6.4 km of path · just outside
Directions
Forêt départementale du Bois des GellesWood or forest · 38 ha · 3.1 km of path · just outside
Directions
Bois PersanWood or forest · 32 ha · 3.7 km of path
Directions
Bois de la Grille NoireWood or forest · 33 ha · 3.4 km of path
Directions
Bois de la CyprenneWood or forest · 28 ha · 3.6 km of path
Directions
Bois de la VauveWood or forest · 35 ha · 2.3 km of path
Directions
Bois de CorbevilleWood or forest · 21 ha · 1.5 km of path
Directions
Parc urbainPark or garden · 5.2 ha · 1.8 km of path · just outside
Directions
Parc Jean TeillacPark or garden · 3 ha · 1 km of path
Directions
Parc intercommunal Eugène ChanlonWood or forest · 4.9 ha · 1.4 km of path
Directions
Parc de MoulonPark or garden · 2.3 ha · 0.9 km of path · just outside
Directions
Parc de LaunayPark or garden · 2.3 ha · 0.7 km of path · just outside
Directions
Parc Charles BoucherPark or garden · 1 ha · 0.5 km of path
Directions
Parc Henri PoincaréPark or garden · 1 ha · 0.2 km of path · just outside
Directions
AgroParisTechPark or garden · 1 ha · 0.1 km of path · just outside
Directions
Jardin ArgentéPark or garden · 0.7 ha · 0.2 km of path · just outside
Directions
Jardin Patrick et Lina DrahiPark or garden · 0.4 ha · 0.3 km of path · just outside
Directions
Boisement de Compensation NordWood or forest · 2.6 ha · just outside
Directions
Jardin du Carré des SciencesPark or garden · 0.5 ha · just outside
Directions
Le plateau d'herbePark or garden · 0.2 ha
Directions

Source: © 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, 2.6 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

2.6 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.

Source: INPN / PatriNat, protected areas July 2026, Natura 2000 December 2024; shares of IGN’s commune boundary.

Footpaths and woods

Footpaths and woods in Orsay

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
54 km
7.3 km per km²
Hiking routes
22 km
waymarked: 3 km per km²
Woodland
27%
about 2 km² of mapped woods

Km per km² of the commune · mapped on OpenStreetMap

OrsayEssonne medianFrance median
Footpaths7.3
Hiking routes3
04.59 km per km²

Share of the land · mapped woods and forest

OrsayEssonne medianFrance median
Woodland27%
0%50%100%

That is more than in 97% of compared French towns for footpaths per km², and for woodland more than in 73% 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 Orsay is within 800 m of a mapped park or wood, as in most French towns.

11 named hiking routes within 2 km

GR (long-distance)PR (local walk)Other named walk
GR655 OT5.7 km
GR 655ET2.5 km
PR 115.9 km
Chemin de Trèves, Igny - Rambouillet11 km
De la Bièvre à l'Orge7.1 km
Chemin Charles Péguy5 km
Parcours Principal2.9 km
Boucle Forêt2.4 km
Via Turonensis, Orsay - Palaiseau1.3 km
Boucle Stade0.8 km
Boucle Forêt Réduit0.4 km

2 GR routes pass within 2 km of Orsay: GR655 OT and GR 655ET.

Source: © OpenStreetMap contributors (ODbL), extracts of October 25, 2026 (Geofabrik).

When to get out

The best walking months in Orsay: April and June to September

Météo-France’s 1991–2020 normals at Fontenay-Les-B., 9.5 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.

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)8.710.111.713.615.216.115.814.312.510.79.18.3
High (°C)791316202426262217118
Rain (mm)544950486958616351616171

April is the driest month (48 mm) and July the warmest (highs of 26 °C). 71 mm of rain falls in December, the wettest month. Frost comes on about 53 nights a year. The climate in Orsay →

Neighbors

Next to Orsay

The nearest towns of 2,500 or more, colored by the share of their land in protected areas.

Les UlisBures-sur-YvetteVillebon-sur-YvetteVillejustGometz-le-ChâtelPalaiseauOrsay
Under 1%1–10 %10–25 %25–50 %50 %+
TownProtectedWoodlandPaths (km/km²)
Orsay0%27%7.3
Les Ulis
25,886 · 2 km
0.2%13%10.9
Bures-sur-Yvette
9,548 · 2.6 km
0.2%26%8.5
Villebon-sur-Yvette
10,291 · 3 km
0%23%3.8
Villejust
2,558 · 3.5 km
0%4.4%2.4
Gometz-le-Châtel
2,630 · 3.9 km
0.2%24%2.5
Palaiseau
37,471 · 4.2 km
0%18%5.9
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 Orsay

Is Orsay in a national or regional nature park?

No. The nearest protected area is Haute Vallée de Chevreuse Regional Nature Park, 2.6 km from the town center.

Are there good walks in Orsay?

OpenStreetMap maps 54 km of footpaths and tracks open on foot in the commune, 7.3 km per km² (the median compared town: 1.7 km per km²); 22 km of waymarked hiking routes cross it.

How much of Orsay is woodland?

27% of the commune is mapped woodland, private woods included; the median compared French town has 13%.

Is Orsay near the sea?

No: the coast is 157 km from the town center, as the crow flies.

When is the best time for walking in Orsay?

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 4, 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.