First pick
Bois de Cergy
Wood or forest · 370 m outside the commune
43 ha10.8 km of path
2 h 25 minto walk all 10.8 km of path
1.5 km north-westfrom the center
Chemin de Chasse-MaréeAllée Cavalière
Directionsto a point inside
Photo: Christophe Godart · CC BY-SA 4.015%woodland
Outdoors in Éragny-sur-Oise · protected areas, woods and footpaths
Éragny-sur-Oise has more footpaths per km² than 8 in 10 French towns
19 km of footpaths cross Éragny-sur-Oise (4.1 km per km²). No protected area reaches Éragny-sur-Oise; the nearest, Vexin Français Regional Nature Park, is 4.5 km from the town center. 15% of Éragny-sur-Oise is mapped woodland. 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: Vexin Français Regional Nature Park, 4.5 km
Woodland
15%
of the land, mapped on OpenStreetMap
Compared town: 13%
Footpaths
19 km
4.1 km per km²
Compared town: 1.7 km per km²
Hiking routes
1.8 km
waymarked, GR and others
Compared town: 0.3 km per km²
Parks & woods
4
named, in or within 400 m of the commune
First: Bois de Cergy
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 Éragny-sur-Oise?
Read from the data: what stands out first, good and less good.
A place of footpaths4.1 km per km² of mapped footpath, against 1.7 km per km² for the median compared town.Protected land nearbyVexin Français Regional Nature Park is 4.5 km from the town center.
What sets Éragny-sur-Oise apart: its footpaths, then protected land close by.
Against French towns
How Éragny-sur-Oise 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
Woodland15%Share of the land mapped as forest or woods on OpenStreetMap
54out of 100
Footpaths4.1 km per km²Km of mapped footpath and track open on foot, per km² of the commune
85out of 100
Hiking routes0.4 km per km²Km of waymarked hiking routes (GR and others), per km² of the commune
53out of 100
Percentiles among compared French towns; ties count half.
Towns its size
Éragny-sur-Oise has the 10th most footpaths per km² of 41 towns its size
The 40 compared French towns nearest in population (17,743 to 19,006 residents), by km of footpath per km². Hover for each one’s protected land and woods; click for its page.
From Jouy-le-Moutier (10.3 km per km²) to Mauges-sur-Loire (0.5 km per km²).
Every town in the comparison
| Town | Paths (km/km²) | Woodland | Protected | Coast | |
|---|---|---|---|---|---|
| 1 | Jouy-le-Moutier Val-d'Oise | 10.3 | 23% | 0% | 123 km |
| 2 | Meylan Isère | 9.2 | 18% | 12% | 205 km |
| 3 | Saint-Égrève Isère | 5.8 | 22% | 30% | 208 km |
| 4 | Bonneuil-sur-Marne Val-de-Marne | 5.8 | 3.6% | 0% | 163 km |
| 5 | Chennevières-sur-Marne Val-de-Marne | 5.4 | 6.2% | 0% | 163 km |
| 6 | Floirac Gironde | 5.1 | 16% | 2.6% | 19 km |
| 7 | Bischheim Bas-Rhin | 5.1 | 3.6% | 0.6% | 449 km |
| 8 | Faches-Thumesnil Nord | 4.4 | 0.2% | 0% | 66 km |
| 9 | Balma Haute-Garonne | 4.2 | 6.4% | 0% | 142 km |
| 10 | Éragny-sur-Oise Val-d'Oise | 4.1 | 15% | 0% | 124 km |
| 11 | Cesson-Sévigné Ille-et-Vilaine | 3.9 | 5.2% | 0% | 50 km |
| 12 | Moissy-Cramayel Seine-et-Marne | 3.9 | 4.7% | 0% | 180 km |
| 13 | Écully Rhône | 3.8 | 14% | 0% | 253 km |
| 14 | Garches Hauts-de-Seine | 3.7 | 2.5% | 0% | 144 km |
| 15 | Bry-sur-Marne Val-de-Marne | 3.6 | 7% | 0% | 158 km |
| 16 | Cognac Charente | 3.5 | 13% | 17% | 43 km |
| 17 | Hendaye Pyrénées-Atlantiques | 3.4 | 8% | 26% | On it |
| 18 | Ploemeur Morbihan | 3.3 | 15% | 4.9% | On it |
| 19 | Osny Val-d'Oise | 3.2 | 14% | 0.1% | 119 km |
| 20 | Hem Nord | 3 | 5.1% | 0% | 64 km |
| 21 | Le Puy-en-Velay Haute-Loire | 2.9 | 12% | 0% | 165 km |
| 22 | Le Pontet Vaucluse | 2.9 | 2.8% | 3.4% | 56 km |
| 23 | Louviers Eure | 2.8 | 55% | 0.1% | 64 km |
| 24 | Cluses Haute-Savoie | 2.8 | 33% | 0% | 264 km |
| 25 | Soisy-sous-Montmorency Val-d'Oise | 2.6 | 5% | 0% | 135 km |
| 26 | Carvin Pas-de-Calais | 2.5 | 5.3% | 0% | 73 km |
| 27 | Digne-les-Bains Alpes-de-Haute-Provence | 2.5 | 50% | 4% | 85 km |
| 28 | Pontarlier Doubs | 2.4 | 48% | 0% | 359 km |
| 29 | Sanary-sur-Mer Var | 2.2 | 16% | 0% | On it |
| 30 | Lunéville Meurthe-et-Moselle | 2.1 | 9% | 0.1% | 389 km |
| 31 | Limay Yvelines | 2.1 | 16% | 6.1% | 112 km |
| 32 | Châteauneuf-les-Martigues Bouches-du-Rhône | 2 | 17% | 27% | 6 km |
| 33 | Sorgues Vaucluse | 1.7 | 9.7% | 22% | 62 km |
| 34 | Bagnols-sur-Cèze Gard | 1.6 | 27% | 8.2% | 79 km |
| 35 | Brie-Comte-Robert Seine-et-Marne | 1.3 | 4.7% | 0% | 176 km |
| 36 | Riom Puy-de-Dôme | 1.1 | 2.4% | 1.3% | 269 km |
| 37 | Saint-Maximin-la-Sainte-Baume Var | 1 | 41% | 34% | 33 km |
| 38 | Pornic Loire-Atlantique | 1 | 4.4% | 0% | On it |
| 39 | Brignoles Var | 0.9 | 48% | 17% | 34 km |
| 40 | Romorantin-Lanthenay Loir-et-Cher | 0.8 | 30% | 100% | 249 km |
| 41 | Mauges-sur-Loire Maine-et-Loire | 0.5 | 4.7% | 11% | 88 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 Éragny-sur-Oise
Named parks, gardens and woods in the commune or within 400 m, the biggest and best-pathed first: Bois de Cergy leads, at 43 ha. Directions go to a point inside.
Parc des Larris
Park or garden · 30 m outside the commune
11 ha2.7 km of path
35 minto walk all 2.7 km of path
1.6 km northfrom the center
Directionsto a point inside
Bois des Chasse-Marée
Wood or forest
29 ha0.3 km of path
0.9 km southfrom the center
Directionsto a point inside
Parc urbain de Chennevières
Park or garden · 390 m outside the commune
1.1 ha0.7 km of path
10 minto walk all 0.7 km of path
1.9 km northfrom the center
Directionsto a point inside
Source: © OpenStreetMap contributors (ODbL): named parks, gardens and woods; sizes are the whole site.
Protected areas
Vexin Français Regional Nature Park is the nearest protected area, 4.5 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
Vexin Français Regional Nature Park
4.5 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 Éragny-sur-Oise
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
19 km
4.1 km per km²
Hiking routes
1.8 km
waymarked: 0.4 km per km²
Woodland
15%
about 0.7 km² of mapped woods
Km per km² of the commune · mapped on OpenStreetMap
Éragny-sur-OiseVal-d'Oise medianFrance median
Footpaths4.1
Hiking routes0.4
02.55 km per km²
Share of the land · mapped woods and forest
Éragny-sur-OiseVal-d'Oise medianFrance median
Woodland15%
0%50%100%
That is more than in 85% of compared French towns for footpaths per km², and for woodland more than in 54% 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 Éragny-sur-Oise is within 800 m of a mapped park or wood, as in most French towns.
3 named hiking routes within 2 km
GR (long-distance)PR (local walk)Other named walk
GR 21.5 km
PR B021 km
Le Fil d'Ariane3.6 km
GR 2 passes within 2 km of Éragny-sur-Oise.
Source: © OpenStreetMap contributors (ODbL), extracts of October 25, 2026 (Geofabrik).
When to get out
The best walking months in Éragny-sur-Oise: April to September
Météo-France’s 1991–2020 normals at Pontoise -Ville, 3 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 | 15.3 | 16.2 | 15.8 | 14.4 | 12.5 | 10.7 | 9.1 | 8.2 |
| High (°C) | 8 | 9 | 13 | 17 | 21 | 24 | 26 | 26 | 22 | 17 | 12 | 8 |
| Rain (mm) | 58 | 52 | 49 | 45 | 62 | 54 | 49 | 53 | 46 | 64 | 59 | 75 |
April is the driest month (45 mm) and August the warmest (highs of 26 °C). 75 mm of rain falls in December, the wettest month. Frost comes on about 35 nights a year. The climate in Éragny-sur-Oise →
Neighbors
Next to Éragny-sur-Oise
The nearest towns of 2,500 or more, colored by the share of their land in protected areas.
Conflans-Sainte-HonorineSaint-Ouen-l'AumônePontoiseMaurecourtPierrelayeHerblay-sur-SeineÉragny-sur-Oise
Under 1%1–10 %10–25 %25–50 %50 %+
| Town | Protected | Woodland | Paths (km/km²) |
|---|---|---|---|
| Éragny-sur-Oise | 0% | 15% | 4.1 |
| Conflans-Sainte-Honorine 36,958 · 2.2 km | 0% | 3.8% | 3.2 |
| Saint-Ouen-l'Aumône 25,578 · 2.8 km | 0% | 7.4% | 3.2 |
| Pontoise 31,970 · 3.6 km | 0.5% | 11% | 6.2 |
| Maurecourt 4,454 · 3.7 km | 0% | 15% | 3.2 |
| Pierrelaye 10,130 · 4 km | 0% | 20% | 2.4 |
| Herblay-sur-Seine 31,779 · 4.5 km | 0% | 10% | 2.7 |
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 Éragny-sur-Oise
Is Éragny-sur-Oise in a national or regional nature park?
No. The nearest protected area is Vexin Français Regional Nature Park, 4.5 km from the town center.
Are there good walks in Éragny-sur-Oise?
OpenStreetMap maps 19 km of footpaths and tracks open on foot in the commune, 4.1 km per km² (the median compared town: 1.7 km per km²); 2 km of waymarked hiking routes cross it.
How much of Éragny-sur-Oise is woodland?
15% of the commune is mapped woodland, private woods included; the median compared French town has 13%.
Is Éragny-sur-Oise near the sea?
No: the coast is 124 km from the town center, as the crow flies.
When is the best time for walking in Éragny-sur-Oise?
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 8, 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.