Photo: Nikolay Tarkhov · Public domainOrsay 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.
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 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.
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.
Percentiles among compared French towns; ties count half.
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.
From Vauréal (12.3 km per km²) to Gaillac (0.2 km per km²).
Every town in the comparison
| Town | Paths (km/km²) | Woodland | Protected | Coast | |
|---|---|---|---|---|---|
| 1 | Vauréal Val-d'Oise | 12.3 | 19% | 0% | 121 km |
| 2 | Noisiel Seine-et-Marne | 9.5 | 32% | 0.1% | 162 km |
| 3 | Saint-Leu-la-Forêt Val-d'Oise | 8.5 | 36% | 0.5% | 131 km |
| 4 | Marly-le-Roi Yvelines | 7.6 | 37% | 0% | 138 km |
| 5 | Bois-d'Arcy Yvelines | 7.4 | 38% | 0% | 140 km |
| 6 | Orsay Essonne | 7.3 | 27% | 0% | 157 km |
| 7 | Le Pecq Yvelines | 7.1 | 2.7% | 0% | 136 km |
| 8 | Les Clayes-sous-Bois Yvelines | 6.3 | 35% | 0% | 137 km |
| 9 | Le Pré-Saint-Gervais Seine-Saint-Denis | 5.8 | 0% | 0% | 149 km |
| 10 | Verneuil-sur-Seine Yvelines | 5.4 | 24% | 0% | 123 km |
| 11 | Saint-Cyr-sur-Loire Indre-et-Loire | 5 | 9.4% | 1.9% | 184 km |
| 12 | Lons-le-Saunier Jura | 4.9 | 8.8% | 1.8% | 356 km |
| 13 | Sainte-Luce-sur-Loire Loire-Atlantique | 4.7 | 12% | 11% | 45 km |
| 14 | Le Bourget Seine-Saint-Denis | 4.5 | 2.2% | 0% | 145 km |
| 15 | Domont Val-d'Oise | 4.5 | 28% | 0% | 133 km |
| 16 | Landerneau Finistère | 4.4 | 18% | 1.2% | On it |
| 17 | Trélazé Maine-et-Loire | 3.9 | 13% | 0% | 122 km |
| 18 | Saint-Jean-de-la-Ruelle Loiret | 3.5 | 4.9% | 3% | 203 km |
| 19 | Mennecy Essonne | 3.3 | 19% | 8.2% | 180 km |
| 20 | Ambérieu-en-Bugey Ain | 3.3 | 49% | 0% | 281 km |
| 21 | Saint-Julien-en-Genevois Haute-Savoie | 3.2 | 13% | 0% | 286 km |
| 22 | Firminy Loire | 3 | 25% | 0% | 204 km |
| 23 | Sin-le-Noble Nord | 2.7 | 12% | 0.1% | 90 km |
| 24 | Rumilly Haute-Savoie | 2.3 | 18% | 0.7% | 262 km |
| 25 | Coulommiers Seine-et-Marne | 2 | 16% | 0% | 183 km |
| 26 | Sedan Ardennes | 2 | 17% | 0% | 222 km |
| 27 | Saint-Amand-les-Eaux Nord | 1.9 | 43% | 100% | 93 km |
| 28 | Montceau-les-Mines Saône-et-Loire | 1.8 | 6.6% | 0% | 347 km |
| 29 | La Baule-Escoublac Loire-Atlantique | 1.7 | 9.6% | 37% | 0.8 km |
| 30 | Valserhône Ain | 1.7 | 59% | 19% | 292 km |
| 31 | Guérande Loire-Atlantique | 1.5 | 7.1% | 76% | On it |
| 32 | Verdun Meuse | 1.4 | 21% | 3.6% | 290 km |
| 33 | Montbrison Loire | 1.3 | 5.7% | 4.8% | 227 km |
| 34 | Les Herbiers Vendée | 1.1 | 6.5% | 0% | 62 km |
| 35 | Cestas Gironde | 1 | 58% | 0% | 28 km |
| 36 | Château-Gontier-sur-Mayenne Mayenne | 0.9 | 3.1% | 0% | 102 km |
| 37 | Châteaurenard Bouches-du-Rhône | 0.8 | 2.1% | 8.3% | 47 km |
| 38 | Mauguio Hérault | 0.8 | 1.4% | 49% | On it |
| 39 | Pamiers Ariège | 0.6 | 16% | 1.1% | 118 km |
| 40 | Loire-Authion Maine-et-Loire | 0.4 | 10% | 100% | 130 km |
| 41 | Gaillac Tarn | 0.2 | 4.9% | 0% | 132 km |
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.
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.
Parc Nord
Forêt départementale du Bois des Gelles
Bois Persan
Bois de la Grille Noire
Bois de la Cyprenne
Bois de la Vauve
Bois de Corbeville
All 21 named parks, gardens and woods
Source: © OpenStreetMap contributors (ODbL): named parks, gardens and woods; sizes are the whole site.
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.
Haute Vallée de Chevreuse Regional Nature Park
Share of the commune’s land
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 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.
Km per km² of the commune · mapped on OpenStreetMap
Share of the land · mapped woods and forest
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
2 GR routes pass within 2 km of Orsay: GR655 OT and GR 655ET.
Source: © OpenStreetMap contributors (ODbL), extracts of October 25, 2026 (Geofabrik).
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.
| 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 | 9 | 13 | 16 | 20 | 24 | 26 | 26 | 22 | 17 | 11 | 8 |
| Rain (mm) | 54 | 49 | 50 | 48 | 69 | 58 | 61 | 63 | 51 | 61 | 61 | 71 |
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 →
Next to Orsay
The nearest towns of 2,500 or more, colored by the share of their land in protected areas.
| Town | Protected | Woodland | Paths (km/km²) |
|---|---|---|---|
| Orsay | 0% | 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 |
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.