1
Mahlon Dickerson Reservation
Managed by Morris County
3,127 acres23.4 mi of trail
Yellow TrailWhite TrailBlue TrailHighlands TrailPurple Trail
Dog rules not recorded
Outdoors · Jefferson
Jefferson, NJ parks, trails & bike paths
About 47% of Jefferson is conserved land, roughly 12,876 acres. There are about 83 miles of mapped trails, and the biggest networks are in Mahlon Dickerson Reservation (23.4 mi), Rockaway River WMA (18.5 mi), and Minnisink Reservation (2.1 mi).
Conserved land, trails, parks and bike routes in Jefferson, measured from OpenStreetMap and USGS data.
At a glance
Jefferson outdoors
Conserved land
47%
12,876 of 27,245 acres
Trails
83 mi
2 mi per sq mi · 66 on conserved land
Parks & preserves
8
625 conserved acres per 1,000 residents
Bike routes
0.3 mi
0.0 mi lanes · 0.3 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
Rockaway River Wildlife Management Area
Nature preserve
3,645 acres18.5 mi of trail
Beaver Brook Trail (White)Yellow/Highlands TrailTeal/Black DotYellow TrailHighlands Trail
Dog rules not recorded
3
Minnisink Reservation
Managed by Morris County
315 acres2.1 mi of trail
Dog rules not recorded
DirectionsTo the parking lot
4
Federal Land
Nature preserve
142 acres1.2 mi of trail
Dog rules not recorded
No trailhead mapped yet
5
Berkshire Valley Wildlife Management Area
Managed by State of New Jersey
482 acres0.9 mi of trail
Dog rules not recorded
DirectionsTo the parking lot
6
Sparta Mountain Wildlife Management Area
Nature preserve
225 acres0.5 mi of trail
Unmarked Trail
Dog rules not recorded
DirectionsTo the parking lot
All 8 parks & preserves
- Weldon Brook Wildlife Management Area13 ac
- Dogwood Park1 ac
Who protects the land
12,876 conserved acres
Who manages it, from PAD-US. Approximate, because parcels can overlap.
Conserved doesn't always mean open to visitors. 3,626 acres are conservation easements, which are usually private land. Public access isn't recorded for 11 of 98 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 paths0.3 mi
- Shoulders & shared lanes0.0 mi
Courts & fields
- Baseball12
- Tennis11
- Soccer6
- Basketball5
- Football2
- Equestrian2
- Beach volleyball1
Counts include school and college facilities, which aren't always open to the public.
Next door
Jefferson and its neighbors
Towns whose outdoors data has been built so far.
| Town | Conserved | Trails | Parks & preserves |
|---|---|---|---|
| Jefferson | 47.3% | 83.2 mi | 8 |
| West Milford | 56% | 233.5 mi | 9 |
| Hopatcong | 21.5% | 19.5 mi | 1 |
| Roxbury | 15.8% | 24.1 mi | 9 |
| Rockaway | 23.2% | 108.4 mi | 7 |
| Mount Arlington | 1.9% | 0.9 mi | 5 |
| Sparta | 18.9% | 27.1 mi | 7 |
Trail talk
Conditions & tips from neighbors
No recent posts about Jefferson'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 37-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.