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Boissy-sous-Saint-Yon (Essonne) mairie 1122Photo: Zmbmee · CC BY-SA 3.0
28%woodland
Outdoors in Boissy-sous-Saint-Yon · protected areas, woods and footpaths

Almost every home in Boissy-sous-Saint-Yon is within 800 m of a park or wood

Boissy-sous-Saint-Yon has 11 km of waymarked hiking routes. 28% of Boissy-sous-Saint-Yon is mapped woodland. No protected area reaches Boissy-sous-Saint-Yon; the nearest, Gâtinais Français Regional Nature Park, is 2.3 km from the town center. 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: Gâtinais Français Regional Nature Park, 2.3 km
Woodland
28%
of the land, mapped on OpenStreetMap
Compared town: 13%
Footpaths
9.3 km
1.1 km per km²
Compared town: 1.7 km per km²
Hiking routes
11 km
waymarked, GR and others
Compared town: 0.3 km per km²
Parks & woods
3
named, in or within 400 m of the commune
First: Forêt régionale de Cheptainville

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 Boissy-sous-Saint-Yon?

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

What sets Boissy-sous-Saint-Yon apart: its hiking routes, then protected land close by.

Against French towns

How Boissy-sous-Saint-Yon 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
46out of 100
Woodland28%Share of the land mapped as forest or woods on OpenStreetMap
Median 13%0100
74out of 100
Footpaths1.1 km per km²Km of mapped footpath and track open on foot, per km² of the commune
Median 1.7 km per km²08+
36out of 100
Hiking routes1.3 km per km²Km of waymarked hiking routes (GR and others), per km² of the commune
NoneMedian 0.3 km per km²3+
89out of 100

Percentiles among compared French towns; ties count half.

Towns its size

Boissy-sous-Saint-Yon has the 19th fewest footpaths per km² of 41 towns its size

The 40 compared French towns nearest in population (3,852 to 3,913 residents), by km of footpath per km². Hover for each one’s protected land and woods; click for its page.

Boissy-sous-Saint-Yon 1.1
Beaulieu-sur-MerPipriac
02.55 km per km²

From Beaulieu-sur-Mer (4.2 km per km²) to Pipriac (0 km per km²).

Every town in the comparison
TownPaths (km/km²)WoodlandProtectedCoast
1Beaulieu-sur-Mer Alpes-Maritimes4.20.2%0.9%On it
2Réhon Meurthe-et-Moselle3.842%0%277 km
3La Bresse Vosges3.558%100%450 km
4Fraisses Loire2.733%0%203 km
5Pringy Seine-et-Marne2.624%100%189 km
6Hussigny-Godbrange Meurthe-et-Moselle2.562%0%282 km
7Belz Morbihan2.425%13%On it
8Pont-de-Roide-Vermondans Doubs2.167%4.5%405 km
9Richwiller Haut-Rhin1.725%0%444 km
10Le Vigan Gard1.768%100%57 km
11Nouvoitou Ille-et-Vilaine1.71.6%0%60 km
12Saint-Cergues Haute-Savoie1.642%19%288 km
13Châteaubernard Charente1.51.2%1.6%44 km
14Lexy Meurthe-et-Moselle1.418%0%275 km
15Fléac Charente1.412%3.7%71 km
16Oudon Loire-Atlantique1.317%27%63 km
17La Croix-Valmer Var1.340%95%On it
18Aix-Noulette Pas-de-Calais1.316%0%73 km
19Touques Calvados1.32.5%0%2.8 km
20Saint-Germain-sur-Morin Seine-et-Marne1.315%0%167 km
21Ribécourt-Dreslincourt Oise1.237%1.5%116 km
22Mortagne-au-Perche Orne1.26.1%100%98 km
23Boissy-sous-Saint-Yon Essonne1.128%0%167 km
24Wimille Pas-de-Calais1.15.1%100%1.8 km
25Saint-Léger-de-Linières Maine-et-Loire127%0%109 km
26Verberie Oise120%8.1%123 km
27Tavaux Jura0.910%0%398 km
28Le Val-d'Ajol Vosges0.853%100%431 km
29Villedieu-les-Poêles-Rouffigny Manche0.72.5%0.6%21 km
30Blainville-sur-l'Eau Meurthe-et-Moselle0.646%0%388 km
31Grosseto-Prugna Corse-du-Sud0.659%0.2%On it
32Lapalud Vaucluse0.65%6.7%96 km
33Prunelli-di-Fiumorbo Haute-Corse0.536%100%On it
34Ablis Yvelines0.58.6%0%149 km
35Lherm Haute-Garonne0.36.9%0%156 km
36Mazères Ariège0.32%0.5%116 km
37Jonquières-Saint-Vincent Gard0.30.1%29%41 km
38Saint-Gildas-des-Bois Loire-Atlantique0.312%3.5%25 km
39Terranjou Maine-et-Loire0.28.6%0%118 km
40Bosroumois Eure0.21.5%0%44 km
41Pipriac Ille-et-Vilaine03.5%0%48 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.

123
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 Boissy-sous-Saint-Yon

Named parks, gardens and woods in the commune or within 400 m, the biggest and best-pathed first: Forêt régionale de Cheptainville leads, at 651 ha. Directions go to a point inside.

First pick

Forêt régionale de Cheptainville

Wood or forest
651 ha15.7 km of path
3 h 30 minto walk all 15.7 km of path
5 km south-eastfrom the center
Chemin de la Grande RuelleChemin Sentier LouchettesChemin du Four à Chaux
Directionsto a point inside

Bois Meurier

Wood or forest · 300 m outside the commune
5.9 ha0.2 km of path
2.6 km northfrom the center
Rue de la Montagne
Directionsto a point inside

Parc de l'Ormeteau

Park or garden
1.4 ha0.3 km of path
Centralin the middle of Boissy-sous-Saint-Yon
Directionsto a point inside

Source: © OpenStreetMap contributors (ODbL): named parks, gardens and woods; sizes are the whole site.

Protected areas

Gâtinais Français Regional Nature Park is the nearest protected area, 2.3 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

Gâtinais Français Regional Nature Park

2.3 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

9 km of footpaths and 11 km of hiking routes cross Boissy-sous-Saint-Yon

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
9.3 km
1.1 km per km²
Hiking routes
11 km
waymarked: 1.3 km per km²
Woodland
28%
about 2.3 km² of mapped woods

Km per km² of the commune · mapped on OpenStreetMap

Boissy-sous-Saint-YonEssonne medianFrance median
Footpaths1.1
Hiking routes1.3
02.55 km per km²

Share of the land · mapped woods and forest

Boissy-sous-Saint-YonEssonne medianFrance median
Woodland28%
0%50%100%

That is less than in 64% of compared French towns for footpaths per km², and for woodland more than in 74% 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 Boissy-sous-Saint-Yon is within 800 m of a mapped park or wood, as in most French towns.

9 named hiking routes within 2 km

GR (long-distance)Other named walk
GR 655ET16 km
Sur les traces de la Renarde13 km
Autour de Saint-Sulpice-de-Favières6.3 km
Bassin de l'Orge et moulin de Trévoix5.4 km
Au grès de la Juine4.9 km
Du Val d'Yerres à l'Étampois4.9 km
Promenade de l'Orge3.9 km
De la Bièvre à l'Orge3.4 km
Entre Essonne et Juine1.5 km

GR 655ET passes within 2 km of Boissy-sous-Saint-Yon.

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

When to get out

The best walking months in Boissy-sous-Saint-Yon: April and June to September

Météo-France’s 1991–2020 normals at Fontenay-Les-B., 7.2 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)8.710.111.713.615.216.115.714.312.510.79.18.3
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 Boissy-sous-Saint-Yon →

Neighbors

Next to Boissy-sous-Saint-Yon

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

ÉglyBreuilletArpajonBruyères-le-ChâtelOllainvilleLa NorvilleBoissy-sous-Saint-Yon
Under 1%1–10 %10–25 %25–50 %50 %+
TownProtectedWoodlandPaths (km/km²)
Boissy-sous-Saint-Yon0%28%1.1
Égly
7,166 · 3.1 km
0%13%3.9
Breuillet
9,157 · 3.2 km
0%33%2.8
Arpajon
11,698 · 4.4 km
0%2.4%3.3
Bruyères-le-Châtel
3,788 · 4.6 km
0.1%64%4.2
Ollainville
5,455 · 4.6 km
0%37%1.7
La Norville
4,268 · 4.8 km
0%4%2.2

Bruyères-le-Châtel is 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 Boissy-sous-Saint-Yon

Is Boissy-sous-Saint-Yon in a national or regional nature park?

No. The nearest protected area is Gâtinais Français Regional Nature Park, 2.3 km from the town center.

Are there good walks in Boissy-sous-Saint-Yon?

OpenStreetMap maps 9 km of footpaths and tracks open on foot in the commune, 1.1 km per km² (the median compared town: 1.7 km per km²); 11 km of waymarked hiking routes cross it.

How much of Boissy-sous-Saint-Yon is woodland?

28% of the commune is mapped woodland, private woods included; the median compared French town has 13%.

Is Boissy-sous-Saint-Yon near the sea?

No: the coast is 167 km from the town center, as the crow flies.

When is the best time for walking in Boissy-sous-Saint-Yon?

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.