Greenhorn Mountain County Park
Park
171 acres0.8 mi of trail
Sand Shed Trail
Dog rules not recorded
No trailhead mapped yet
–Not graded
Outdoors in Alta Sierra
Few parks or trails are on the map in Alta Sierra
The biggest trail networks: Greenhorn Mountain County Park (0.8 mi). 44% of Alta Sierra’s land is conserved, about 289 acres. 173 acres are parks and preserves, 14,398 per 1,000 residents.
Conserved land
44%
289 acres · of 1.0 sq mi of land
Trails
1.4 mi
1.4 per sq mi of land
Park land
173 ac
14,398 acres per 1,000 residents
Near a park
66%
of residents within ½ mile
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 Greenhorn Mountain County Park, with 0.8 miles. Directions go to the nearest trailhead or public parking.
Who protects it
289 conserved acres
44% of Alta Sierra’s land. Who manages Alta Sierra’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.
U.S. Forest Service197 ac
County132 ac
National Forest · 197 acLocal Park · 132 ac
The biggest protected parcels
| Parcel (PAD-US) | Managed by | Acres | Public access |
|---|---|---|---|
| Sequoia National Forest National Forest | U.S. Forest Service | 197 | Open |
| Greenhorn Mountain Park Local Park | County | 132 | Open |
Trails & water
2 named trails
Named trails
Unpaved · 1.2 mi
Sand Shed Trail0.4 mi
Alta Sierra Trail0.2 mi
When to get out
The best walking months in Alta Sierra: May to 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) | 10.0 | 10.8 | 11.9 | 13.1 | 14.0 | 14.6 | 14.3 | 13.5 | 12.3 | 11.2 | 10.2 | 9.7 |
| High (°F) | 50 | 50 | 54 | 58 | 67 | 77 | 85 | 85 | 79 | 68 | 57 | 49 |
| Rain (in) | 4.8 | 4.6 | 3.5 | 1.9 | 0.9 | 0.2 | 0.1 | 0.2 | 0.2 | 0.8 | 2.0 | 4.4 |
July is the driest month (0.1 in) and August the warmest (highs of 85 °F). 4.8 inches fall in January, the wettest month. The climate in Alta Sierra →
Questions about parks and trails in Alta Sierra
Where can I hike in Alta Sierra?
The longest trail networks: Greenhorn Mountain County Park, 0.8 miles. Each one is on the map above, with directions to the nearest trailhead or parking.
Are dogs allowed on Alta Sierra’s trails?
Greenhorn Mountain County Park doesn’t have dog rules recorded on the map; check the signs at the trailhead.
Is there public land near Alta Sierra?
94,039 acres of parks and open public land lie inside Alta Sierra or within 10 miles of it (PAD-US), 310 of them inside the town line.
Trail talk
Conditions, parking and favorite walks from Alta Sierra 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 →