Three Island Crossing State Park
Park
179 acres
Dog rules not recorded
No trailhead mapped yetWebsite ↗
Gorby Opera Theater · Photo: publichall · CC BY-SA 3.0AOutdoors
Outdoors in Glenns Ferry
Glenns Ferry has 188 acres of parks, 131 for every 1,000 residents
14% of Glenns Ferry’s land is conserved, about 180 acres. 93% of residents live within a half mile of a park. 1.5 miles of mapped trail cross Glenns Ferry, 0.7 per square mile of land.
Ahead of 94% of U.S. towns. What drives it
Conserved land
14%
180 acres · of 2.1 sq mi of land
Trails
1.5 mi
0.7 per sq mi of land
Park land
188 ac
131 acres per 1,000 residents
Near a park
93%
of residents within ½ mile
Lakes & rivers
1
What kind of outdoors town is Glenns Ferry?
Read from the map. The page puts what stands out first.
Outdoors grade
How much outdoors does Glenns Ferry have?
On conserved land, trails, park land and how close residents live to a park, Glenns Ferry is ahead of 94% of U.S. towns. All four inputs are above most U.S. towns; park acres per resident rank highest, trail miles lowest.
A
OutdoorsA character grade: shown, never part of Glenns Ferry’s overall grade.
Conserved land14% of the land · typical ID town 2% · U.S. 4%A−Trails0.7 miles of mapped trail per square mile of land (2 mi) · ID 0.7 · U.S. 0.4B+Park land131 acres of park per 1,000 residents (188 acres) · ID 6 · U.S. 13AParks close to home93% of residents within a half mile of a park · ID 87% · U.S. 72%A−
All U.S. towns we grade (21,298)Ahead of 94%
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Few Idaho towns conserve much land (a typical one, 2%; the U.S., 4%), so Glenns Ferry’s 14% is ahead of 100% of Idaho towns, while its trails per square mile lead 51% of them.
How sure. Graded on any three of the four inputs instead, the letter would range from A to A+. Trails and many small parks come from OpenStreetMap, mapped by volunteers, so coverage varies from town to town; the half mile is a straight line from each census block, so a river or highway in the way isn’t counted against it.
PAD-US, OpenStreetMap (© OpenStreetMap contributors), Census 2025 Gazetteer and 2020 blocks; details in Sources below. How TownRatings grades the outdoors →
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.
City Park
Park
7 acres
Dog rules not recorded
No trailhead mapped yet
Who protects it
180 conserved acres
14% of Glenns Ferry’s land. Who manages Glenns Ferry’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.
State parks179 ac
State Park · 179 ac
The biggest protected parcels
| Parcel (PAD-US) | Managed by | Acres | Public access |
|---|---|---|---|
| Three Island Crossing State Park State Park | State parks | 179 | Open |
Things to do
1 places to go in Glenns Ferry
Beaches, playgrounds, peaks, falls and more. Pick a kind.
Public pools in Glenns Ferry
Glenns Ferry PoolIn City Park
DirectionsTrails & water
1 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
1Baseball
Includes school and college facilities, which aren’t always open to the public.
History along the way
History →6 places on the National Register
The country’s official list of places worth saving (National Park Service).
Amustutz ApartmentsBuilding · listed 1982
About itGorby Opera TheaterBuilding · listed 1982
About itJ. S. McGinnis BuildingBuilding · listed 1982
About itO'Neill Brothers BuildingBuilding · listed 1982
About itOur Lady of Limerick Catholic ChurchBuilding · listed 1982
About itGlenns Ferry SchoolBuilding · listed 1984
About itWhen to get out
The best walking months in Glenns Ferry: April to June 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 | 15.0 | 13.9 | 12.4 | 10.9 | 9.7 | 9.0 |
| High (°F) | 41 | 48 | 58 | 66 | 76 | 86 | 96 | 94 | 83 | 68 | 52 | 40 |
| Rain (in) | 1.3 | 0.7 | 0.9 | 0.7 | 0.8 | 0.5 | 0.2 | 0.1 | 0.3 | 0.7 | 0.9 | 1.3 |
August is the driest month (0.1 in) and July the warmest (highs of 96 °F). 1.3 inches fall in December, the wettest month. Summer highs reach 96 °F, too hot for the outline. The climate in Glenns Ferry →
Questions about parks and trails in Glenns Ferry
How much of Glenns Ferry is conserved land?
14% of its land, against a typical 2% for an Idaho town and 4% nationally (PAD-US). Conserved doesn’t always mean open to visitors: easements are usually private land.
Are dogs allowed on Glenns Ferry’s trails?
Three Island Crossing State Park and City Park don’t have dog rules recorded on the map; check the signs at the trailhead.
Is there public land near Glenns Ferry?
144,610 acres of parks and open public land lie inside Glenns Ferry or within 10 miles of it (PAD-US), 188 of them inside the city line.
How much outdoors does Glenns Ferry have?
Ahead of 94% 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 Glenns Ferry 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 →