Fort Moultrie Quartermaster and Support Facilities Historic District · Photo: Brian Stansberry · CC BY 3.012% of Sullivan's Island’s land is conserved: 187 acres
3.6 miles of mapped trail cross Sullivan's Island, 1.4 per square mile of land. The biggest trail networks: Fort Moultrie (1.5 mi). 40 acres are parks and preserves, 19 per 1,000 residents.
Ahead of 85% of U.S. towns. What drives it
What kind of outdoors town is Sullivan's Island?
Read from the map. The page puts what stands out first.
How much outdoors does Sullivan's Island have?
On conserved land, trails, park land and how close residents live to a park, Sullivan's Island is ahead of 85% of U.S. towns. All four inputs are above most U.S. towns; trail miles rank highest, the share of residents near a park lowest.
Few South Carolina towns conserve much land (a typical one, 1%; the U.S., 4%), so Sullivan's Island’s 12% is ahead of 94% of South Carolina towns, while its trails per square mile lead 95% of them.
Water is 27% of Sullivan's Island’s area (1 of 3 square miles), so every share here is of land; over land and water together, the conserved share would read 9%.
PAD-US, OpenStreetMap (© OpenStreetMap contributors), Census 2025 Gazetteer and 2020 blocks; details in Sources below. How TownRatings grades the outdoors →
Conserved land, trails & bike routes
Tap a number to zoom to a park. Tap a layer to hide it.
Pick a walk
The longest trail network is Fort Moultrie, with 1.5 miles. Directions go to the nearest trailhead or public parking.
United States Coast Guard Historic District
187 conserved acres
12% of Sullivan's Island’s land. Water is left out: Sullivan's Island has 2.5 square miles of land and 0.9 of water, so the share counts land only. Who manages Sullivan's Island’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.
Conserved doesn’t always mean open to visitors. 53 acres are conservation easements, usually private land. The walks above are places people visit.
| Parcel (PAD-US) | Managed by | Acres | Public access |
|---|---|---|---|
| Sullivan's Island Sand Dunes Local Conservation Area | Town or city | 70 | Restricted |
| Fort Sumter and Fort Moultrie National Historical Park Historic or Cultural Area | National Park Service | 31 | Restricted |
| South Carolina Department of Natural Resources Marshland 1 State Other or Unknown | State natural resources | 29 | Open |
| Pard Park Local Park | Town or city | 3 | Open |
| Poe Avenue Park Local Park | Town or city | 1 | Open |
25 places to go in Sullivan's Island
Beaches, playgrounds, peaks, falls and more. Pick a kind.
12 beaches without a name on the map. Tap “Show all on map” to see them.
8 playgrounds without a name on the map.
Plus 2 boat launches without a name on the map.
1 picnic area without a name on the map. Tap “Show all on map” to see it.
1 community garden without a name on the map.
1 named trail and 1 lakes & rivers
0.1 miles of bike routes
Bike lanes are often missing from the map in smaller towns, so that number is likely low.
Includes school and college facilities, which aren’t always open to the public.
8 places on the National Register
The country’s official list of places worth saving (National Park Service). The map also marks 8 historic points from OpenStreetMap: plaques, memorials and old buildings.
The best walking months in Sullivan's Island: April and May
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) | 10.2 | 11.0 | 11.9 | 13.0 | 13.8 | 14.3 | 14.1 | 13.3 | 12.3 | 11.3 | 10.4 | 10.0 |
| High (°F) | 59 | 61 | 67 | 74 | 81 | 87 | 90 | 88 | 84 | 77 | 68 | 62 |
| Rain (in) | 3.3 | 3.1 | 3.4 | 3.2 | 3.2 | 5.4 | 6.0 | 6.5 | 5.5 | 4.5 | 2.9 | 3.2 |
November is the driest month (2.9 in) and July the warmest (highs of 90 °F). 6.5 inches fall in August, the wettest month. Summer highs reach 90 °F, too hot for the outline. The climate in Sullivan's Island →
Sullivan's Island 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's Island | 12% | 1.4 | 19 | 76% | A |
| Mount Pleasant | 10% | 0.8 | 26 | 55% | A− |
| Isle of Palms | 1% | 1.8 | 5 | 36% | C+ |
The four inputs of the Outdoors grade, from the engine; shares are of land, not water.
Questions about parks and trails in Sullivan's Island
Where can I hike in Sullivan's Island?
The longest trail networks: Fort Moultrie, 1.5 miles; J. Marshall Stith Park, 0.1 miles. Each one is on the map above, with directions to the nearest trailhead or parking.
How much of Sullivan's Island is conserved land?
12% of its land, against a typical 1% for a South Carolina town and 4% nationally (PAD-US). Conserved doesn’t always mean open to visitors: easements are usually private land.
Are dogs allowed on Sullivan's Island’s trails?
Fort Moultrie and J. Marshall Stith Park don’t have dog rules recorded on the map; check the signs at the trailhead.
Where can I bike in Sullivan's Island?
0.1 miles of bike routes are on the map: 0.1 of painted or protected lanes.
Is there public land near Sullivan's Island?
7,510 acres of parks and open public land lie inside Sullivan's Island or within 10 miles of it (PAD-US), 69 of them inside the town line.
How much outdoors does Sullivan's Island have?
Ahead of 85% of U.S. towns on the Outdoors grade. The grade combines the share of land that is conserved, miles of mapped trail per square mile of land, park acres per 1,000 residents and the share of residents within a half mile of a park. It’s a character grade, so it isn’t part of the overall grade. How it works.
Trail talk
Conditions, parking and favorite walks from Sullivan's Island neighbors.
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 →