Otter Brook Preserve
Managed by The Nature Conservancy
712 acres1.2 mi of trail
Dogs usually not allowed
No trailhead mapped yet
Photo: Unknown photographer · Public domain–Not graded
Outdoors in Sullivan
Few parks or trails are on the map in Sullivan
The biggest trail networks: Otter Brook Preserve (1.2 mi), Allison Nims Piper Memorial Forest (1.2 mi), Olsen Family Forest (0.9 mi). 29% of Sullivan’s land is conserved, about 3,472 acres. 117 acres are parks and preserves, 170 per 1,000 residents.
Conserved land
29%
3,472 acres · of 18.5 sq mi of land
Trails
17 mi
0.9 per sq mi of land
Park land
117 ac
170 acres per 1,000 residents
Near a park
4%
of residents within ½ mile
Highest peak
1,736 ft
Boynton Hill
Lakes & rivers
3
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 Otter Brook Preserve, with 1.2 miles. Directions go to the nearest trailhead or public parking.
Allison Nims Piper Memorial Forest
Managed by Society for the Protection of New Hampshire Forests
254 acres1.2 mi of trail
Dog rules not recorded
No trailhead mapped yet
Olsen Family Forest
Managed by Society for the Protection of New Hampshire Forests
736 acres0.9 mi of trail
Dog rules not recorded
No trailhead mapped yet
Winch Trust Town Forest
Managed by Town of Sullivan
112 acres0.5 mi of trail
Dog rules not recorded
Directionsto the parking lot
All 7 parks & preserves
Otter Brook Preserve712 acres · 1.2 mi of trail · The Nature Conservancy
Allison Nims Piper Memorial Forest254 acres · 1.2 mi of trail · Society for the Protection of New Hampshire Forests
Olsen Family Forest736 acres · 0.9 mi of trail · Society for the Protection of New Hampshire Forests
Winch Trust Town Forest112 acres · 0.5 mi of trail · Town of Sullivan
DirectionsAndorra Forest124 acres · Society for the Protection of NH Forests
John and Rosemarie Calhoun Family Forest102 acres · Monadnock Conservancy
Taves Reservation1 acres · Society for the Protection of New Hampshire Forests
Who protects it
3,472 conserved acres
29% of Sullivan’s land. Who manages Sullivan’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.
Land trusts & nonprofits4,064 ac
Not recorded1,066 ac
Conservation Easement · 3,321 acPrivate Conservation · 1,692 acLocal Resource Management Area · 117 ac
Good to know
Conserved doesn’t always mean open to visitors. 1,663 acres are conservation easements, usually private land. Public access isn’t recorded for 35 of 35 parcels. The walks above are places people visit.
The biggest protected parcels
| Parcel (PAD-US) | Managed by | Acres | Public access |
|---|---|---|---|
| Olsen Family Forest Private Conservation | Not recorded | 754 | Unknown |
| Otter Brook Preserve Private Conservation | Land trusts & nonprofits | 732 | Unknown |
| Allison Nims Piper Memorial Forest Private Conservation | Not recorded | 195 | Unknown |
| Winch Trust Town Forest Local Resource Management Area | Not recorded | 117 | Unknown |
| Otter Brook/Andorra Forest Private Conservation | Land trusts & nonprofits | 11 | Unknown |
Things to do
8 places to go in Sullivan
Beaches, playgrounds, peaks, falls and more. Pick a kind.
Playgrounds in Sullivan
1 playground without a name on the map. Tap “Show all on map” to see it.
Peaks in Sullivan
Boynton Hill1,736 ft elevation · In Allison Nims Piper Memorial Forest
DirectionsFrost Hill1,699 ft elevation · In Andorra Forest
DirectionsWinch Hill1,640 ft elevation
DirectionsSpaulding Hill1,598 ft elevation
DirectionsHubbard Hill1,476 ft elevation
DirectionsFrost Hill1,312 ft elevation
DirectionsNims Hill1,309 ft elevation
DirectionsTrails & water
3 lakes & rivers
Lakes & rivers tap for directions
Biking & sports
0.0 miles of bike routes
Bike lanes are often missing from the map in smaller towns, so that number is likely low.
Courts & fields
1Basketball
Includes school and college facilities, which aren’t always open to the public.
When to get out
The best walking months in Sullivan: May, August and 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) | 9.3 | 10.5 | 11.8 | 13.3 | 14.6 | 15.3 | 15.1 | 13.9 | 12.4 | 10.9 | 9.6 | 9.0 |
| High (°F) | 30 | 33 | 41 | 54 | 66 | 74 | 79 | 77 | 70 | 57 | 45 | 34 |
| Rain (in) | 3.5 | 3.0 | 3.6 | 3.7 | 3.8 | 4.6 | 4.6 | 4.6 | 4.4 | 5.1 | 3.8 | 4.2 |
February is the driest month (3.0 in) and July the warmest (highs of 79 °F). 5.1 inches fall in October, the wettest month. The climate in Sullivan →
Next door
Sullivan 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 |
|---|---|---|---|---|---|
| Sullivan | — not graded: under 1,000 residents or part of its town | ||||
| Gilsum | — not graded: under 1,000 residents or part of its town | ||||
| Keene | 22% | 2.2 | 103 | 84% | A+ |
| Nelson | — not graded: under 1,000 residents or part of its town | ||||
| Stoddard | 68% | 1.6 | 341 | 10% | A |
The four inputs of the Outdoors grade, from the engine; shares are of land, not water.
Questions about parks and trails in Sullivan
Where can I hike in Sullivan?
The longest trail networks: Otter Brook Preserve, 1.2 miles; Allison Nims Piper Memorial Forest, 1.2 miles; Olsen Family Forest, 0.9 miles; Winch Trust Town Forest, 0.5 miles. Each one is on the map above, with directions to the nearest trailhead or parking.
Are dogs allowed on Sullivan’s trails?
Otter Brook Preserve and Allison Nims Piper Memorial Forest don’t have dog rules recorded on the map; check the signs at the trailhead.
Is there public land near Sullivan?
11,817 acres of parks and open public land lie inside Sullivan or within 10 miles of it (PAD-US), 117 of them inside the town line.
Trail talk
Conditions, parking and favorite walks from Sullivan 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 →