Six Mile Run Reservoir Site
Nature preserve
2,653 acres20.7 mi of trail
Creek TrailBlackwells TrailTwisty TrailUnmarked Trail+1
Dog rules not recorded
Directionsto the trailhead
–Not graded
Outdoors in Six Mile Run
More than half of Six Mile Run’s land is conserved: 70%
70% of Six Mile Run’s land is conserved, about 3,390 acres. The biggest trail networks: Six Mile Run Reservoir Site (20.7 mi), Negri-Nepote Native Grassland Preserve (3.2 mi). 2,831 acres are parks and preserves, 982 per 1,000 residents.
Conserved land
70%
3,390 acres · of 7.5 sq mi of land
Trails
25 mi
3.3 per sq mi of land
Park land
2,831 ac
982 acres per 1,000 residents
Near a park
99%+
of residents within ½ mile
Bike routes
0.8 mi
0.8 mi paths
Lakes & rivers
2
The map
Conserved land, trails & bike routes
Tap a number to zoom to a park. Tap a layer to hide it.
Easements protect land from building but are usually private.© OpenStreetMap contributors · USGS PAD-US
Places to walk
Pick a walk
The longest trail network is Six Mile Run Reservoir Site, with 20.7 miles. Directions go to the nearest trailhead or public parking.
Negri-Nepote Native Grassland Preserve
Nature preserve
152 acres3.2 mi of trail
Dog rules not recorded
Directionsto the parking lot
Who protects it
3,390 conserved acres
70% of Six Mile Run’s land. Who manages Six Mile Run’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.
State natural resources2,626 ac
County615 ac
Town or city435 ac
Other state land270 ac
USDA easements (NRCS)66 ac
State Park · 2,626 acAgricultural Easement · 1,171 acLocal Other or Unknown · 215 ac
Good to know
Conserved doesn’t always mean open to visitors. 549 acres are conservation easements, usually private land. The walks above are places people visit.
The biggest protected parcels
| Parcel (PAD-US) | Managed by | Acres | Public access |
|---|---|---|---|
| Six Mile Run Reservoir Site State Park | State natural resources | 2,626 | Open |
| Franklin Township Unknown Local Other or Unknown | Town or city | 182 | Open |
| South Middlebush Conservation Local Other or Unknown | Town or city | 33 | Open |
Trails & water
5 named trails and 2 lakes & rivers
Named trails
Open to bikes · 12.9 miHorses · 12.5 miUnpaved · 14.5 mi
Creek Trail4.4 mi
Blackwells Trail4.4 mi
Twisty Trail2.0 mi
Unmarked Trail1.8 mi
Cedar Trail1.5 mi
Lakes & rivers tap for directions
Biking & sports
0.8 miles of bike routes
Bike lanes are often missing from the map in smaller towns, so that number is likely low.
0.8 mi
off-road bike paths
Courts & fields
4Basketball
3Soccer
2Tennis
1Baseball
Includes school and college facilities, which aren’t always open to the public.
When to get out
The best walking months in Six Mile Run: April to June and August
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) | 9.6 | 10.6 | 11.8 | 13.2 | 14.4 | 15.0 | 14.8 | 13.8 | 12.4 | 11.0 | 9.9 | 9.3 |
| High (°F) | 40 | 43 | 52 | 64 | 73 | 82 | 87 | 85 | 78 | 66 | 55 | 45 |
| Rain (in) | 3.5 | 2.8 | 4.2 | 3.7 | 4.1 | 4.4 | 5.1 | 4.4 | 4.1 | 4.2 | 3.3 | 4.4 |
February is the driest month (2.8 in) and July the warmest (highs of 87 °F). 5.1 inches fall in July, the wettest month. Summer highs reach 87 °F, too hot for the outline. The climate in Six Mile Run →
Next door
Six Mile Run and its neighbors
Six Mile Run has the second most mapped trails of the 8 towns around it. Tap a town to see its outdoors.
Franklin Township58 miSix Mile Run25 miNorth Brunswick Township8.9 miEast Millstone7.5 miBlackwells Mills1.1 miFranklin Park0.0 miMiddlebush0.0 miVoorhees0.0 mi
| Town | Conserved of land | Trail mi per sq mi | Park acres per 1,000 | Near a park ½ mile | Outdoors |
|---|---|---|---|---|---|
| Six Mile Run | — not graded: under 1,000 residents or part of its town | ||||
| Franklin Park | — not graded: under 1,000 residents or part of its town | ||||
| Middlebush | — not graded: under 1,000 residents or part of its town | ||||
| Blackwells Mills | — not graded: under 1,000 residents or part of its town | ||||
| Voorhees | — not graded: under 1,000 residents or part of its town | ||||
| East Millstone | — not graded: under 1,000 residents or part of its town | ||||
| North Brunswick Township | 10% | 0.7 | 18 | 97% | A |
| Franklin Township | 26% | 1.3 | 111 | 96% | A+ |
The four inputs of the Outdoors grade, from the engine; shares are of land, not water.
Questions about parks and trails in Six Mile Run
Where can I hike in Six Mile Run?
The longest trail networks: Six Mile Run Reservoir Site, 20.7 miles; Negri-Nepote Native Grassland Preserve, 3.2 miles. Each one is on the map above, with directions to the nearest trailhead or parking.
Are dogs allowed on Six Mile Run’s trails?
Six Mile Run Reservoir Site and Negri-Nepote Native Grassland Preserve don’t have dog rules recorded on the map; check the signs at the trailhead.
Where can I bike in Six Mile Run?
0.8 miles of bike routes are on the map: 0.8 of off-road paths.
Is there public land near Six Mile Run?
43,980 acres of parks and open public land lie inside Six Mile Run or within 10 miles of it (PAD-US), 2,831 of them inside the town line.
Trail talk
Conditions, parking and favorite walks from Six Mile Run neighbors.
Share a tip
Sources
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 →