Photo: John Phelan · CC BY 3.0Sudbury has 57 miles of mapped trails, 2.4 for every square mile of land
29% of Sudbury’s land is conserved, about 4,512 acres. Virtually every resident lives within a half mile of a park. 2,429 acres are parks and preserves, 126 per 1,000 residents.
Among the top 1% of U.S. towns · #31 of 283 in Massachusetts. What drives it
What kind of outdoors town is Sudbury?
Read from the map. The page puts what stands out first.
How much outdoors does Sudbury have?
On conserved land, trails, park land and how close residents live to a park, Sudbury is among the top 1% of U.S. towns, #31 of 283 in Massachusetts. All four inputs put Sudbury near the top nationally; trail miles rank highest.
Massachusetts towns conserve more land than most (a typical one, 21%; the U.S., 4%), so Sudbury’s 29% is ahead of 70% of Massachusetts towns, while its trails per square mile lead 62% of them.
PAD-US, OpenStreetMap (© OpenStreetMap contributors), Census 2025 Gazetteer and 2020 blocks; details in Sources below. How TownRatings grades the outdoors →
Conserved land, trails & bike routes
Tap a number to zoom to a park. Tap a layer to hide it.
Pick a walk
The longest trail network is Nobscot Scout Reservation, with 9.7 miles. Directions go to the nearest trailhead or public parking.
Assabet River National Wildlife Refuge
Memorial Forest
Sudbury Water District
Davis Farm Conservation Land
Hopbrook Marsh Conservation Land
Piper Farm Conservation Area
Nobscot Reservation
All 66 parks & preserves
4,512 conserved acres
29% of Sudbury’s land. Who manages Sudbury’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.
Conserved doesn’t always mean open to visitors. 1,018 acres are conservation easements, usually private land. Public access isn’t recorded for 27 of 215 parcels. The walks above are places people visit.
| Parcel (PAD-US) | Managed by | Acres | Public access |
|---|---|---|---|
| Great Meadows National Wildlife Refuge National Wildlife Refuge | U.S. Fish and Wildlife Service | 1,874 | Restricted |
| Assabet River National Wildlife Refuge National Wildlife Refuge | U.S. Fish and Wildlife Service | 947 | Restricted |
| Pantry Brook Wildlife Management Area State Conservation Area | State fish & wildlife | 407 | Restricted |
| Marlborough Sudbury State Forest State Resource Management Area | State parks | 239 | Open |
| Marlborough-Sudbury State Forest State Resource Management Area | Not recorded | 239 | Open |
| Unknown Park Local Conservation Area | Town or city | 225 | Open |
| Town of Sudbury Local Other or Unknown | Not recorded | 166 | Open |
| Water District Land Watershed Protection Area | Not recorded | 101 | Unknown |
| Wayside Inn Private Historic or Cultural | Not recorded | 100 | Restricted |
| Hopbrook Marsh Conservation Land Local Conservation Area | Town or city | 96 | Restricted |
5 smaller protected places aren’t shown.
27 places to go in Sudbury
Beaches, playgrounds, peaks, falls and more. Pick a kind.
Plus 13 playgrounds without a name on the map. Tap “Show all on map” to see them.
3 scenic views without a name on the map.
25 named trails and 22 lakes & rivers
15 more trails
9.3 miles of bike routes
Bike lanes are often missing from the map in smaller towns, so that number is likely low.
Includes school and college facilities, which aren’t always open to the public.
5 places on the National Register
The country’s official list of places worth saving (National Park Service). The map also marks 4 historic points from OpenStreetMap: plaques, memorials and old buildings.
The best walking months in Sudbury: April to September
NOAA’s 1991–2020 normals for the town and the daylight at its latitude. Outlined months have long days, highs of 59 to 86 °F and little rain for the place.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 9.4 | 10.5 | 11.8 | 13.3 | 14.6 | 15.3 | 15.0 | 13.9 | 12.4 | 11.0 | 9.7 | 9.1 |
| High (°F) | 36 | 39 | 47 | 60 | 71 | 79 | 84 | 83 | 75 | 63 | 51 | 41 |
| Rain (in) | 3.4 | 3.2 | 4.2 | 4.1 | 3.7 | 4.1 | 3.7 | 3.8 | 3.9 | 4.7 | 3.9 | 4.5 |
February is the driest month (3.2 in) and July the warmest (highs of 84 °F). 4.7 inches fall in October, the wettest month. The climate in Sudbury →
Sudbury and its neighbors
Tap a town to see its outdoors.
| Town | Conserved of land | Trail mi per sq mi | Park acres per 1,000 | Near a park ½ mile | Outdoors |
|---|---|---|---|---|---|
| Sudbury | 29% | 2.4 | 126 | 99%+ | A+ |
| Wayland | 41% | 3.8 | 106 | 98% | A+ |
| Maynard | 39% | 3.5 | 19 | 99%+ | A+ |
| Framingham | 21% | 2.8 | 26 | 98% | A+ |
| Stow | 32% | 4.2 | 241 | 85% | A+ |
| Concord | 37% | 5.1 | 198 | 99%+ | A+ |
| Hudson | 14% | 1.9 | 24 | 95% | A |
| Marlborough | 19% | 2.8 | 35 | 95% | A+ |
The four inputs of the Outdoors grade, from the engine; shares are of land, not water.
Questions about parks and trails in Sudbury
Where can I hike in Sudbury?
The longest trail networks: Nobscot Scout Reservation, 9.7 miles; Assabet River National Wildlife Refuge, 4.7 miles; Memorial Forest, 3.4 miles; Sudbury Water District, 3.3 miles. Each one is on the map above, with directions to the nearest trailhead or parking.
How much of Sudbury is conserved land?
29% of its land, against a typical 21% for a Massachusetts town and 4% nationally (PAD-US). Conserved doesn’t always mean open to visitors: easements are usually private land.
Are dogs allowed on Sudbury’s trails?
Nobscot Scout Reservation and Assabet River National Wildlife Refuge don’t have dog rules recorded on the map; check the signs at the trailhead.
Where can I bike in Sudbury?
9.3 miles of bike routes are on the map: 0.2 of painted or protected lanes, 8.9 of off-road paths and 0.2 of shoulders and shared lanes.
Is there public land near Sudbury?
57,265 acres of parks and open public land lie inside Sudbury or within 10 miles of it (PAD-US), 2,463 of them inside the town line.
How much outdoors does Sudbury have?
Among the top 1% of U.S. towns on the Outdoors grade, #31 of 283 in Massachusetts. The grade combines the share of land that is conserved, miles of mapped trail per square mile of land, park acres per 1,000 residents and the share of residents within a half mile of a park. It’s a character grade, so it isn’t part of the overall grade. How it works.
Trail talk
Conditions, parking and favorite walks from Sudbury neighbors.
Where this page comes from
Conserved and public land: USGS Protected Areas Database of the United States (PAD-US), service updated July 2026. Parks, trails, playgrounds, beaches and other places: OpenStreetMap (© OpenStreetMap contributors, ODbL), map data as of 2026-10-28. Land and water area: Census 2025 Gazetteer. Residents near a park: 2020 Census blocks. National Register: National Park Service. How TownRatings grades the outdoors →