1
T. Howard Duckett Watershed
Managed by Washington Suburban Sanitary Commission
284 acres3 mi of trail
Dog rules not recorded
DirectionsTo Browns Bridge & Rocky Gorge Trail parking area
Outdoors · Ashton-Sandy Spring
Ashton-Sandy Spring, MD parks, trails & bike paths
About 24% of Ashton-Sandy Spring is conserved land, roughly 1,566 acres. There are about 7.5 miles of mapped trails, and the biggest networks are in T. Howard Duckett Watershed (3 mi) and Northwest Branch Stream Valley Park (1.4 mi).
Conserved land, trails, parks and bike routes in Ashton-Sandy Spring, measured from OpenStreetMap and USGS data.
At a glance
Ashton-Sandy Spring outdoors
Conserved land
24%
1,566 of 6,595 acres
Trails
7.5 mi
0.7 mi per sq mi · 5 on conserved land
Parks & preserves
7
278 conserved acres per 1,000 residents
Bike routes
0.5 mi
0.0 mi lanes · 0.5 mi off-road paths
Conserved land is a share of the whole town area. Bike lanes are often missing from the map in smaller towns, so that number is likely low.
Map
Conserved land, trails & bike routes
Tap a number or a place below to zoom in© OpenStreetMap contributors · USGS PAD-US
Places to walk
Parks & preserves with trails
Ranked by mapped trail miles. Directions go to the nearest marked trailhead or public parking.
2
Northwest Branch Stream Valley Park
Managed by Montgomery Parks
186 acres1.4 mi of trail
Underground Railroad Experience Trail
Dog rules not recorded
No trailhead mapped yet
Website
3
Woodlawn Manor Cultural Park
Managed by Montgomery Parks
79 acres0.4 mi of trail
Underground Railroad Experience Trail
Dog rules not recorded
No trailhead mapped yet
Website
4
Patuxent River Watershed Conservation Park
Nature preserve
108 acres0.2 mi of trail
Dog rules not recorded
No trailhead mapped yet
Website
Things to do
Beaches, playgrounds, falls & more
Pick a kind of place for the list, directions, or pins on the map above.
Playgrounds in Ashton-Sandy Spring
Unnamed playground
Unnamed playground
Trails
Named trails
Horses 1.3 miUnpaved 2.9 mi
- Underground Railroad Experience Trail1.2 mi
Water
Lakes & rivers
Tap a name for directions.
Who protects the land
1,566 conserved acres
Who manages it, from PAD-US. Approximate, because parcels can overlap.
Conserved doesn't always mean open to visitors. 813 acres are conservation easements, which are usually private land. Public access isn't recorded for 138 of 277 parcels. The places listed above are parks and preserves people visit.
Biking & sports
Bike routes, courts & fields
- Painted or protected bike lanes0.0 mi
- Off-road bike paths0.5 mi
- Shoulders & shared lanes0.0 mi
Courts & fields
- Tennis15
- Baseball3
- Equestrian2
- Soccer2
- Softball2
- Basketball2
- Football1
Counts include school and college facilities, which aren't always open to the public.
Public lands
The biggest protected places in Ashton-Sandy Spring
From USGS PAD-US: who manages each one and whether visitors are welcome.
Conservation Easement 1,280 acState Other or Unknown 318 acLocal Conservation Area 270 acLocal Park 256 acLocal Other or Unknown 170 ac
Showing 1–10 of 13 places
| Place | Managed by | Acres | Public access |
|---|---|---|---|
| Patuxent River Wastershed Conservation ParkState Other or Unknown | Not recorded | 357 | Access unknown |
| T. Howard Duckett WatershedLocal Conservation Area | County | 269 | Open |
| County LandLocal Other or Unknown | Not recorded | 115 | Access unknown |
| Woodlawn Cultural ParkLocal Park | Not recorded | 110 | Access unknown |
| Patuxent River SpState Park | Not recorded | 81 | Access unknown |
| Montgomery CountyLocal Park | County | 80 | Open |
| MD National Capital Parks and PlanningLocal Other or Unknown | Not recorded | 31 | Access unknown |
| Ednor ParkLocal Park | Other or Unknown Local Government | 25 | Open |
| Washington Suburban Sanitary CommissionLocal Other or Unknown | Not recorded | 23 | Access unknown |
| Open SpaceLocal Other or Unknown | Not recorded | 2 | Access unknown |
Nearby
Ashton-Sandy Spring and its neighbors
Towns whose outdoors data has been built so far.
| Town | Conserved | Trails | Parks & preserves |
|---|---|---|---|
| Ashton-Sandy Spring | 23.7% | 7.5 mi | 7 |
| Olney | 19.2% | 17.0 mi | 15 |
| Spencerville | 6.5% | 0.4 mi | 3 |
| Burtonsville | 29.5% | 15.0 mi | 9 |
| Cloverly | 28.3% | 26.0 mi | 15 |
Trail talk
Conditions & tips from neighbors
No recent posts about Ashton-Sandy Spring's trails yet. Muddy, icy, a bridge out, where to park: a quick post helps the next person.
Sources: trails, parks, preserves, courts and bike lanes © OpenStreetMap contributors (ODbL), map data as of 2026-09-28. Conserved land: USGS Gap Analysis Project, Protected Areas Database of the United States (PAD-US). Measured against the Census town boundary.
How we measure
"Trails" are OpenStreetMap paths, bridleways, public tracks and unpaved footways, plus footways inside a park or preserve or on a named trail route. Sidewalks are left out. Areas are counted on a 20-meter grid, so overlapping parcels count once. "Conserved" includes conservation easements, which protect land from development but are usually private property. Trailheads are the nearest marked trailhead, public parking lot or information board within about 150 meters of a preserve. Dog rules come from OpenStreetMap when someone has tagged them; otherwise we show what's typical for the land manager, or say the rules aren't recorded.
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