Altpeter Park
Managed by Jefferson County
4 acres
Dog rules not recorded
No trailhead mapped yet
Lorine Niedecker Cottage · Photo: TheCatalyst31 · CC0–Not graded
Outdoors in Sumner
Few parks or trails are on the map in Sumner
26 acres are parks and preserves, 32 per 1,000 residents. 1.5 miles of mapped trail cross Sumner, 0.1 per square mile of land. 1% of residents live within a half mile of a park.
Conserved land
1%
103 acres · of 16.3 sq mi of land
Trails
1.5 mi
0.1 per sq mi of land
Park land
26 ac
32 acres per 1,000 residents
Near a park
1%
of residents within ½ mile
Lakes & rivers
4
1 boat launch
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
Directions go to the nearest trailhead or public parking.
Koshkonong Wildlife Area
Managed by Wisconsin Department of Natural Resources
1 acres
Dog rules not recorded
No trailhead mapped yet
Who protects it
103 conserved acres
1% of Sumner’s land. Water is left out: Sumner has 16.3 square miles of land and 15.1 of water, so the share counts land only. Who manages Sumner’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.
USDA easements (NRCS)53 ac
County33 ac
State natural resources16 ac
Conservation Easement · 53 acUnknown Easement · 30 acState Recreation Area · 16 acLocal Park · 3 ac
Good to know
Conserved doesn’t always mean open to visitors. 84 acres are conservation easements, usually private land. Public access isn’t recorded for 3 of 7 parcels. The walks above are places people visit.
The biggest protected parcels
| Parcel (PAD-US) | Managed by | Acres | Public access |
|---|---|---|---|
| Koshkonong Wildlife Area State Recreation Area | State natural resources | 16 | Open |
| Busseyville Park Local Park | County | 2 | Open |
| Altpeter Park Local Park | County | 1 | Open |
Things to do
2 places to go in Sumner
Beaches, playgrounds, peaks, falls and more. Pick a kind.
Playgrounds in Sumner
1 playground without a name on the map. Tap “Show all on map” to see it.
Boat launches in Sumner
1 boat launch without a name on the map.
Trails & water
4 lakes & rivers
Lakes & rivers tap for directions
History along the way
History →1 place on the National Register
The country’s official list of places worth saving (National Park Service).
Lorine Niedecker CottageBuilding · listed 2018
About itWhen to get out
September is the best month for walking in Sumner
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 | 15.0 | 13.9 | 12.4 | 11.0 | 9.7 | 9.0 |
| High (°F) | 28 | 32 | 44 | 58 | 70 | 80 | 83 | 81 | 74 | 61 | 46 | 33 |
| Rain (in) | 1.5 | 1.5 | 2.1 | 3.6 | 4.1 | 5.3 | 4.0 | 4.1 | 3.5 | 2.9 | 2.3 | 1.8 |
January is the driest month (1.5 in) and July the warmest (highs of 83 °F). 5.3 inches fall in June, the wettest month. The climate in Sumner →
Next door
Sumner 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 |
|---|---|---|---|---|---|
| Sumner | — not graded: under 1,000 residents or part of its town | ||||
| Koshkonong | 5% | 0.2 | 255 | 49% | B |
| Oakland | 4% | 0.1 | 25 | 56% | B− |
| Albion | 2% | 0.3 | 153 | 20% | B− |
| Lake Koshkonong | — not graded: under 1,000 residents or part of its town | ||||
The four inputs of the Outdoors grade, from the engine; shares are of land, not water.
Questions about parks and trails in Sumner
Are dogs allowed on Sumner’s trails?
Altpeter Park and Koshkonong Wildlife Area don’t have dog rules recorded on the map; check the signs at the trailhead.
Is there public land near Sumner?
8,465 acres of parks and open public land lie inside Sumner or within 10 miles of it (PAD-US), 26 of them inside the town line.
Trail talk
Conditions, parking and favorite walks from Sumner 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 →