John Clyde Memorial Native Grassland Preserve
Managed by Franklin township NJ
130 acres3.5 mi of trail
Red TrailBlue TrailBrown TrailYellow Trail+1
Dog rules not recorded
Directionsto Griggstown native grassland preserve
–Not graded
Outdoors in Griggstown
38% of Griggstown’s land is conserved, and virtually every resident lives within a half mile of a park
Virtually every resident lives within a half mile of a park. The biggest trail networks: John Clyde Memorial Native Grassland Preserve (3.5 mi). 38% of Griggstown’s land is conserved, about 598 acres.
Conserved land
38%
598 acres · of 2.4 sq mi of land
Trails
7.0 mi
2.9 per sq mi of land
Park land
723 ac
891 acres per 1,000 residents
Near a park
99%+
of residents within ½ mile
Bike routes
2.5 mi
2.5 mi paths
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 John Clyde Memorial Native Grassland Preserve, with 3.5 miles. Directions go to the nearest trailhead or public parking.
Delaware and Raritan Canal State Park
Managed by New Jersey Division of Parks and Forestry
229 acres0.1 mi of trail
Dogs on leash
Directionsto D&R Canal Towpath ParkingWebsite ↗
Who protects it
598 conserved acres
38% of Griggstown’s land. Who manages Griggstown’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.
Town or city411 ac
Land trusts & nonprofits144 ac
Other state land130 ac
Not recorded77 ac
Local Other or Unknown · 326 acPrivate Conservation · 176 acAgricultural Easement · 165 acLocal Resource Management Area · 86 acPrivate Agricultural · 7 ac
Good to know
Conserved doesn’t always mean open to visitors. 81 acres are conservation easements, usually private land. Public access isn’t recorded for 1 of 24 parcels. The walks above are places people visit.
The biggest protected parcels
| Parcel (PAD-US) | Managed by | Acres | Public access |
|---|---|---|---|
| Franklin Township Unknown Local Other or Unknown | Town or city | 204 | Open |
| Simonson Brook Local Other or Unknown | Town or city | 105 | Open |
| Bunker Hill Environmental Center Local Resource Management Area | Town or city | 86 | Open |
| unknown Private Conservation | Not recorded | 77 | Open |
| Delaware and Raritan Greenway Land Trust Preserve Private Conservation | Land trusts & nonprofits | 70 | Open |
| Wilson / Canal Road Private Conservation | Land trusts & nonprofits | 22 | Closed |
| Franklin Township Agriculture Local Other or Unknown | Town or city | 15 | Open |
| Delaware and Raritan Greenway Land Trust Agriculture Private Agricultural | Land trusts & nonprofits | 7 | Open |
| Millstone River Private Conservation | Land trusts & nonprofits | 7 | Closed |
| Canal Park Local Other or Unknown | Town or city | 2 | Open |
Trails & water
8 named trails
Named trails
Open to bikes · 5.7 miHorses · 5.7 miUnpaved · 3.6 mi
Blue Trail2.1 mi
Red Trail2.1 mi
Brown Trail0.7 mi
Orange Trail0.7 mi
Yellow0.3 mi
Blue trail0.2 mi
Yellow trail0.2 mi
Yellow Trail0.1 mi
Biking & sports
2.5 miles of bike routes
Bike lanes are often missing from the map in smaller towns, so that number is likely low.
2.5 mi
off-road bike paths
Courts & fields
1Basketball
1Tennis
Includes school and college facilities, which aren’t always open to the public.
When to get out
The best walking months in Griggstown: 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 | 4.1 | 3.7 | 4.1 | 4.5 | 5.1 | 4.4 | 4.2 | 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 Griggstown →
Next door
Griggstown and its neighbors
Tap a town to see its outdoors.
Franklin Township58 miHillsborough Township45 miMontgomery Township27 miGriggstown7.0 miTen Mile Run3.7 miPleasant Plains1.2 miBlackwells Mills1.1 miEast Rocky Hill0.1 mi
| Town | Conserved of land | Trail mi per sq mi | Park acres per 1,000 | Near a park ½ mile | Outdoors |
|---|---|---|---|---|---|
| Griggstown | — not graded: under 1,000 residents or part of its town | ||||
| Montgomery Township | 27% | 0.8 | 165 | 99% | A+ |
| Franklin Township | 26% | 1.3 | 111 | 96% | A+ |
| Ten Mile Run | — not graded: under 1,000 residents or part of its town | ||||
| East Rocky Hill | — not graded: under 1,000 residents or part of its town | ||||
| Blackwells Mills | — not graded: under 1,000 residents or part of its town | ||||
| Pleasant Plains | — not graded: under 1,000 residents or part of its town | ||||
| Hillsborough Township | 32% | 0.8 | 182 | 98% | A+ |
The four inputs of the Outdoors grade, from the engine; shares are of land, not water.
Questions about parks and trails in Griggstown
Where can I hike in Griggstown?
The longest trail networks: John Clyde Memorial Native Grassland Preserve, 3.5 miles; Delaware and Raritan Canal State Park, 0.1 miles. Each one is on the map above, with directions to the nearest trailhead or parking.
Are dogs allowed on Griggstown’s trails?
OpenStreetMap records dogs as welcome at Delaware and Raritan Canal State Park (on leash). For the rest, check the signs at the trailhead.
Where can I bike in Griggstown?
2.5 miles of bike routes are on the map: 2.5 of off-road paths.
Is there public land near Griggstown?
43,612 acres of parks and open public land lie inside Griggstown or within 10 miles of it (PAD-US), 723 of them inside the town line.
Trail talk
Conditions, parking and favorite walks from Griggstown 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 →