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Groupe scolaire Pasteur (1), Sannois, Val-d'OisePhoto: CVB · CC BY 4.0
17%woodland
Outdoors in Sannois · protected areas, woods and footpaths

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

Footpaths add up to 29 km across Sannois (6 km per km²). No protected area reaches Sannois; the nearest, Sites de Seine-Saint-Denis (Natura 2000), is 3.8 km from the town center. Mapped woodland covers 17% of Sannois. 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: Sites de Seine-Saint-Denis, 3.8 km
Woodland
17%
of the land, mapped on OpenStreetMap
Compared town: 13%
Footpaths
29 km
6 km per km²
Compared town: 1.7 km per km²
Hiking routes
0 km
waymarked, GR and others
Compared town: 0.3 km per km²
Parks & woods
12
named, in or within 400 m of the commune
First: Forêt régionale de Cormeilles

Throughout this page, the Val-d'Oise 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 Sannois?

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

What sets Sannois apart: its footpaths, then protected land close by.

Against French towns

How Sannois 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
Woodland17%Share of the land mapped as forest or woods on OpenStreetMap
Median 13%0100
57out of 100
Footpaths6 km per km²Km of mapped footpath and track open on foot, per km² of the commune
Median 1.7 km per km²08+
94out of 100
Hiking routes0 km per km²Km of waymarked hiking routes (GR and others), per km² of the commune
NoneMedian 0.3 km per km²3+
12out of 100

Percentiles among compared French towns; ties count half.

Towns its size

Sannois has the 11th most footpaths per km² of 41 towns its size

The 40 compared French towns nearest in population (25,789 to 28,046 residents), by km of footpath per km². Hover for each one’s protected land and woods; click for its page.

Sannois 6
Paris 4eSèvremoine
0714 km per km²

From Paris 4e (12.9 km per km²) to Sèvremoine (0.6 km per km²).

Every town in the comparison
TownPaths (km/km²)WoodlandProtectedCoast
1Paris 4e Paris12.90%0%150 km
2Les Ulis Essonne10.913%0.2%156 km
3Taverny Val-d'Oise10.533%0.4%129 km
4Villeneuve-la-Garenne Hauts-de-Seine9.84.2%0%141 km
5Champs-sur-Marne Seine-et-Marne9.636%0.1%160 km
6Grigny Essonne8.77.2%0%170 km
7Élancourt Yvelines8.226%3.5%138 km
8Cormeilles-en-Parisis Val-d'Oise7.214%0%133 km
9Gradignan Gironde6.817%0%26 km
10Yerres Essonne6.636%0%169 km
11Sannois Val-d'Oise617%0%135 km
12Bussy-Saint-Georges Seine-et-Marne5.931%2.3%167 km
13Armentières Nord5.93.8%0%50 km
14Sucy-en-Brie Val-de-Marne5.731%0%165 km
15Blagnac Haute-Garonne5.65.4%7.5%152 km
16Cenon Gironde5.48.9%0%18 km
17Eaubonne Val-d'Oise51.9%0%134 km
18Limeil-Brévannes Val-de-Marne4.829%0%165 km
19Lambersart Nord4.73.4%0%59 km
20Castelnau-le-Lez Hérault4.64.5%1.2%11 km
21Miramas Bouches-du-Rhône49.2%5.7%18 km
22Illkirch-Graffenstaden Bas-Rhin3.930%26%454 km
23La Garde Var3.87.6%25%On it
24Biarritz Pyrénées-Atlantiques3.511%3.5%On it
25Le Grand-Quevilly Seine-Maritime3.44.9%0.1%50 km
26Vertou Loire-Atlantique3.119%0%41 km
27Sens Yonne3.14.6%0%249 km
28Brétigny-sur-Orge Essonne39.5%0%169 km
29Soissons Aisne2.77.5%0%148 km
30Aurillac Cantal2.72.9%0.2%195 km
31Rambouillet Yvelines2.648%74%139 km
32Lunel Hérault2.20.4%0.6%14 km
33Gonesse Val-d'Oise2.14%0%141 km
34Villeparisis Seine-et-Marne1.913%0%153 km
35Les Pavillons-sous-Bois Seine-Saint-Denis1.90%0%151 km
36Saumur Maine-et-Loire1.515%100%133 km
37Muret Haute-Garonne1.510%3.2%150 km
38La Teste-de-Buch Gironde1.156%46%On it
39Étampes Essonne112%0%172 km
40Bergerac Dordogne114%1.9%86 km
41Sèvremoine Maine-et-Loire0.65.3%0%70 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 Sannois

Named parks, gardens and woods in the commune or within 400 m, the biggest and best-pathed first: Forêt régionale de Cormeilles leads, at 274 ha. Directions go to a point inside.

First pick

Forêt régionale de Cormeilles

Wood or forest
274 ha48.4 km of path
10 h 45 minto walk all 48.4 km of path
2.3 km westfrom the center
Route StratégiqueChemin du Tour du FortChemin de la Fontaine aux Ruisseaux+5 paths
Directionsto a point inside

Butte d'Orgemont

Park or garden · 170 m outside the commune
36 ha8.4 km of path
1 h 50 minto walk all 8.4 km of path
2 km south-eastfrom the center
Chemin de Sablé
Directionsto a point inside

Butte des Châtaigniers

Park or garden
15 ha2.1 km of path
30 minto walk all 2.1 km of path
1.1 km southfrom the center
Directionsto a point inside

Parc Cadet de Vaux

Park or garden · 190 m outside the commune
2.9 ha0.9 km of path
10 minto walk all 0.9 km of path
2 km north-westfrom the center
Directionsto a point inside

Parc de loisirs de Cernay

Park or garden · 50 m outside the commune
1.6 ha0.7 km of path
10 minto walk all 0.7 km of path
0.8 km northfrom the center
Directionsto a point inside

Plaine de Jeux

Park or garden · 100 m outside the commune
1.1 ha0.6 km of path
10 minto walk all 0.6 km of path
1.5 km north-westfrom the center
Directionsto a point inside

Square Jean Mermoz

Park or garden
1.1 ha0.4 km of path
Centralin the middle of Sannois
Directionsto a point inside

Square Alexandre Ribot

Park or garden
0.5 ha0.3 km of path
Centralin the middle of Sannois
Directionsto a point inside
All 12 named parks, gardens and woods
Forêt régionale de CormeillesWood or forest · 274 ha · 48.4 km of path
Directions
Butte d'OrgemontPark or garden · 36 ha · 8.4 km of path · just outside
Directions
Butte des ChâtaigniersPark or garden · 15 ha · 2.1 km of path
Directions
Parc Cadet de VauxPark or garden · 2.9 ha · 0.9 km of path · just outside
Directions
Parc de loisirs de CernayPark or garden · 1.6 ha · 0.7 km of path · just outside
Directions
Plaine de JeuxPark or garden · 1.1 ha · 0.6 km of path · just outside
Directions
Square Jean MermozPark or garden · 1.1 ha · 0.4 km of path
Directions
Square Alexandre RibotPark or garden · 0.5 ha · 0.3 km of path
Directions
Square de la CommanderiePark or garden · 0.5 ha · 0.2 km of path · just outside
Directions
Square des PiretinsPark or garden · 0.2 ha · 0.3 km of path
Directions
Square de l'EuropePark or garden · 0.3 ha · 0.2 km of path
Directions
Square VasseurPark or garden · 0.3 ha
Directions

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

Protected areas

Sites de Seine-Saint-Denis is the nearest protected area, 3.8 km away

The protected areas reaching the commune, and the nearest: national parks, regional nature parks, nature reserves and Natura 2000 sites.

Natura 2000 site

Sites de Seine-Saint-Denis

3.8 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 Sannois

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
29 km
6 km per km²
Hiking routes
0 km
waymarked: 0 km per km²
Woodland
17%
about 0.8 km² of mapped woods

Km per km² of the commune · mapped on OpenStreetMap

SannoisVal-d'Oise medianFrance median
Footpaths6
Hiking routes0
03.57 km per km²

Share of the land · mapped woods and forest

SannoisVal-d'Oise medianFrance median
Woodland17%
0%50%100%

That is more than in 94% of compared French towns for footpaths per km², and for woodland more than in 57% 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 Sannois is within 800 m of a mapped park or wood, as in most French towns.

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

When to get out

The best walking months in Sannois: April to September

Météo-France’s 1991–2020 normals at Le Bourget, 13 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)8.710.111.713.615.316.215.814.412.510.79.18.2
High (°C)891316202326252217118
Rain (mm)474144436154565345575463

February is the driest month (41 mm) and July the warmest (highs of 26 °C). 63 mm of rain falls in December, the wettest month. Frost comes on about 37 nights a year. The climate in Sannois →

Gardens

A garden to visit in Sannois

Named gardens in the commune.

Jardin botanique de Sannois des Plantes MédicinalesIn Sannois
Directions

Source: © OpenStreetMap contributors (ODbL) and Wikidata.

Neighbors

Next to Sannois

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

ErmontSaint-GratienFranconvilleEaubonneArgenteuilLe Plessis-BouchardSannois
Under 1%1–10 %10–25 %25–50 %50 %+
TownProtectedWoodlandPaths (km/km²)
Sannois0%17%6
Ermont
29,489 · 1.8 km
0%0%6.9
Saint-Gratien
21,336 · 2.4 km
0%0.7%6
Franconville
37,754 · 2.6 km
0%27%8.2
Eaubonne
26,211 · 2.7 km
0%1.9%5
Argenteuil
106,130 · 2.9 km
0%5.5%3.2
Le Plessis-Bouchard
8,518 · 3.3 km
0%1.2%5.8

Franconville 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 Sannois

Is Sannois in a national or regional nature park?

No. The nearest protected area is Sites de Seine-Saint-Denis, 3.8 km from the town center.

Are there good walks in Sannois?

OpenStreetMap maps 29 km of footpaths and tracks open on foot in the commune, 6 km per km² (the median compared town: 1.7 km per km²).

How much of Sannois is woodland?

17% of the commune is mapped woodland, private woods included; the median compared French town has 13%.

Is Sannois near the sea?

No: the coast is 135 km from the town center, as the crow flies.

When is the best time for walking in Sannois?

April 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.