First pick
Parc de Versailles
Park or garden · 90 m outside the commune
663 ha79 km of path
17 h 35 minto walk all 79 km of path
3.8 km south-eastfrom the center
Allée du MailRu de GallyAllée des Moutons+5 paths
Directionsto a point inside
Photo: Lionel Allorge · CC BY-SA 3.031%woodland
Outdoors in Bailly · protected areas, woods and footpaths
Bailly has more footpaths per km² than 9 in 10 French towns
36 km of footpaths cross Bailly (5.5 km per km²). Mapped woodland covers 31% of Bailly. Bailly has 5 km of waymarked hiking routes. 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: Etangs et rigoles d’Yveline nature reserve, 7.2 km
Woodland
31%
of the land, mapped on OpenStreetMap
Compared town: 13%
Footpaths
36 km
5.5 km per km²
Compared town: 1.7 km per km²
Hiking routes
5 km
waymarked, GR and others
Compared town: 0.3 km per km²
Parks & woods
7
named, in or within 400 m of the commune
First: Parc 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 Bailly?
Read from the data: what stands out first, good and less good.
A place of footpaths5.5 km per km² of mapped footpath, against 1.7 km per km² for the median compared town.A wooded commune31% mapped woodland, more than in 77% of compared French towns, against 13% for the median compared town.Protected land nearbyEtangs et rigoles d’Yveline nature reserve is 7.2 km from the town center.
What sets Bailly apart: its footpaths, then its woods.
Against French towns
How Bailly 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
22out of 100
Woodland31%Share of the land mapped as forest or woods on OpenStreetMap
77out of 100
Footpaths5.5 km per km²Km of mapped footpath and track open on foot, per km² of the commune
92out of 100
Hiking routes0.8 km per km²Km of waymarked hiking routes (GR and others), per km² of the commune
75out of 100
Percentiles among compared French towns; ties count half.
Towns its size
Bailly has the 2nd most footpaths per km² of 41 towns its size
The 40 compared French towns nearest in population (3,700 to 3,764 residents), by km of footpath per km². Hover for each one’s protected land and woods; click for its page.
From Sochaux (5.8 km per km²) to Montastruc-la-Conseillère (0.2 km per km²).
Every town in the comparison
| Town | Paths (km/km²) | Woodland | Protected | Coast | |
|---|---|---|---|---|---|
| 1 | Sochaux Doubs | 5.8 | 6.7% | 0% | 418 km |
| 2 | Bailly Yvelines | 5.5 | 31% | 0% | 140 km |
| 3 | Cabourg Calvados | 4.3 | 0.4% | 0% | 0.8 km |
| 4 | Doussard Haute-Savoie | 2.7 | 53% | 100% | 244 km |
| 5 | Pélussin Loire | 2.7 | 50% | 100% | 212 km |
| 6 | Bohars Finistère | 2.6 | 11% | 0% | 3.3 km |
| 7 | Lourches Nord | 2.5 | 5.6% | 0% | 103 km |
| 8 | Blanzat Puy-de-Dôme | 2.5 | 24% | 0.1% | 263 km |
| 9 | La Ferté-Alais Essonne | 2.3 | 26% | 100% | 181 km |
| 10 | Les Rousses Jura | 2.3 | 52% | 100% | 321 km |
| 11 | Saint-Hippolyte-du-Fort Gard | 2.2 | 38% | 58% | 47 km |
| 12 | Audierne Finistère | 2.2 | 16% | 12% | On it |
| 13 | Ganges Hérault | 2 | 30% | 65% | 48 km |
| 14 | Latresne Gironde | 1.7 | 8.9% | 21% | 25 km |
| 15 | Malville Loire-Atlantique | 1.7 | 17% | 1.9% | 24 km |
| 16 | Veyre-Monton Puy-de-Dôme | 1.5 | 6.6% | 1.6% | 245 km |
| 17 | Isneauville Seine-Maritime | 1.5 | 6.7% | 0% | 47 km |
| 18 | Torreilles Pyrénées-Orientales | 1.5 | 0.4% | 20% | On it |
| 19 | Varennes-sur-Seine Seine-et-Marne | 1.3 | 1.7% | 38% | 218 km |
| 20 | Rœulx Nord | 1.2 | 0.4% | 0% | 103 km |
| 21 | Plobannalec-Lesconil Finistère | 1.1 | 3.3% | 0% | On it |
| 22 | Saïx Tarn | 0.9 | 12% | 3.3% | 93 km |
| 23 | Houdan Yvelines | 0.9 | 1.9% | 0% | 115 km |
| 24 | Saint-Martin-la-Plaine Loire | 0.9 | 11% | 0% | 224 km |
| 25 | Brantôme en Périgord Dordogne | 0.8 | 48% | 20% | 104 km |
| 26 | Bouzonville Moselle | 0.8 | 27% | 2.8% | 332 km |
| 27 | Flassans-sur-Issole Var | 0.7 | 58% | 0.8% | 28 km |
| 28 | Objat Corrèze | 0.7 | 8.2% | 0% | 160 km |
| 29 | Bouxwiller Bas-Rhin | 0.7 | 11% | 0.3% | 418 km |
| 30 | Pannes Loiret | 0.7 | 8.9% | 0% | 233 km |
| 31 | Fougerolles-Saint-Valbert Haute-Saône | 0.7 | 36% | 100% | 429 km |
| 32 | Peyrehorade Landes | 0.6 | 36% | 0% | 29 km |
| 33 | Bonnétable Sarthe | 0.6 | 34% | 0% | 130 km |
| 34 | Montamisé Vienne | 0.5 | 37% | 38% | 124 km |
| 35 | Sartène Corse-du-Sud | 0.4 | 17% | 39% | On it |
| 36 | Labastide-Saint-Pierre Tarn-et-Garonne | 0.4 | 3.4% | 1.5% | 169 km |
| 37 | Plémet Côtes-d'Armor | 0.3 | 10% | 0% | 35 km |
| 38 | Ribérac Dordogne | 0.3 | 9% | 12% | 77 km |
| 39 | Ardentes Indre | 0.3 | 24% | 0% | 231 km |
| 40 | Montreuil-Bellay Maine-et-Loire | 0.2 | 8.5% | 100% | 119 km |
| 41 | Montastruc-la-Conseillère Haute-Garonne | 0.2 | 8.4% | 0% | 142 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 Bailly
Named parks, gardens and woods in the commune or within 400 m, the biggest and best-pathed first: Parc de Versailles leads, at 663 ha. Directions go to a point inside.
Forêt de Marly-le-Roi
Wood or forest
2,109 ha194.8 km of path
43 h 15 minto walk all 194.8 km of path
4.7 km north-westfrom the center
Route HardouinRoute de la Grille MadameRoute Royale+5 paths
Directionsto a point inside
Arboretum de Versailles-Chèvreloup
Park or garden
212 ha0.5 km of path
5 minto walk all 0.5 km of path
2 km south-eastfrom the center
Parcours pieds-nus
Directionsto a point inside
Parc de la Châtaigneraie
Park or garden
1.7 ha0.7 km of path
10 minto walk all 0.7 km of path
Centralin the middle of Bailly
Directionsto a point inside
Parc La Roseraie
Park or garden · 320 m outside the commune
0.7 ha0.4 km of path
1.1 km westfrom the center
Directionsto a point inside
Parc de la Mairie
Park or garden
0.3 ha0.1 km of path
Centralin the middle of Bailly
Directionsto a point inside
Source: © OpenStreetMap contributors (ODbL): named parks, gardens and woods; sizes are the whole site.
Protected areas
Etangs et rigoles d’Yveline nature reserve is the nearest protected area, 7.2 km away
The protected areas reaching the commune, and the nearest: national parks, regional nature parks, nature reserves and Natura 2000 sites.
Nature reserve
Etangs et rigoles d’Yveline nature reserve
7.2 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 Bailly
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
36 km
5.5 km per km²
Hiking routes
5 km
waymarked: 0.8 km per km²
Woodland
31%
about 2 km² of mapped woods
Km per km² of the commune · mapped on OpenStreetMap
BaillyYvelines medianFrance median
Footpaths5.5
Hiking routes0.8
03.57 km per km²
Share of the land · mapped woods and forest
BaillyYvelines medianFrance median
Woodland31%
0%50%100%
That is more than in 92% of compared French towns for footpaths per km², and for woodland more than in 77% 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 Bailly is within 800 m of a mapped park or wood, as in most French towns.
8 named hiking routes within 2 km
PR (local walk)Other named walk
PR 8711 km
PR 894.3 km
PR 883.3 km
Parcours randonnée11 km
Les Arbres du Monde: Circuit Rouge3.1 km
Les Arbres du Monde: Circuit Bleu1.9 km
Alternative du sentier des Gondi1.2 km
Alternative sentier des Seigneurs0.9 km
Source: © OpenStreetMap contributors (ODbL), extracts of October 25, 2026 (Geofabrik).
When to get out
The best walking months in Bailly: April and June to September
Météo-France’s 1991–2020 normals at Toussus le Noble, 10 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 | 14.4 | 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 Bailly →
Neighbors
Next to Bailly
The nearest towns of 2,500 or more, colored by the share of their land in protected areas.
Noisy-le-RoiL'Étang-la-VilleLe Chesnay-RocquencourtFontenay-le-FleuryLouveciennesMarly-le-RoiBailly
Under 1%1–10 %10–25 %25–50 %50 %+
| Town | Protected | Woodland | Paths (km/km²) |
|---|---|---|---|
| Bailly | 0% | 31% | 5.5 |
| Noisy-le-Roi 7,713 · 1.4 km | 0% | 20% | 4.9 |
| L'Étang-la-Ville 5,157 · 3.4 km | 0% | 62% | 8.8 |
| Le Chesnay-Rocquencourt 30,689 · 3.8 km | 0% | 21% | 6.3 |
| Fontenay-le-Fleury 13,680 · 3.8 km | 0% | 8% | 3.3 |
| Louveciennes 7,990 · 4 km | 0% | 31% | 3.3 |
| Marly-le-Roi 16,756 · 4 km | 0% | 37% | 7.6 |
L'Étang-la-Ville 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 Bailly
Is Bailly in a national or regional nature park?
No. The nearest protected area is Etangs et rigoles d’Yveline nature reserve, 7.2 km from the town center.
Are there good walks in Bailly?
OpenStreetMap maps 36 km of footpaths and tracks open on foot in the commune, 5.5 km per km² (the median compared town: 1.7 km per km²); 5 km of waymarked hiking routes cross it.
How much of Bailly is woodland?
31% of the commune is mapped woodland, private woods included; the median compared French town has 13%.
Is Bailly near the sea?
No: the coast is 140 km from the town center, as the crow flies.
When is the best time for walking in Bailly?
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.