1
Greenhorn Mountain County Park
Park
171 acres0.8 mi of trail
Sand Shed Trail
Dog rules not recorded
No trailhead mapped yet
Outdoors · Alta Sierra
Alta Sierra, CA parks, trails & bike paths
About 45% of Alta Sierra is conserved land, roughly 289 acres. There are about 1.4 miles of mapped trails, and the biggest networks are in Greenhorn Mountain County Park (0.8 mi).
Conserved land, trails, parks and bike routes in Alta Sierra, measured from OpenStreetMap and USGS data.
At a glance
Alta Sierra outdoors
Conserved land
45%
289 of 647 acres
Trails
1.4 mi
1.4 mi per sq mi · 1 on conserved land
Parks & preserves
1
named on the map
Bike routes
0.0 mi
0.0 mi lanes · 0.0 mi off-road paths
Conserved land is a share of the whole town area. Bike lanes are often missing from the map in smaller towns, so that number is likely low.
Map
Conserved land, trails & bike routes
Tap a number or a place below to zoom in© OpenStreetMap contributors · USGS PAD-US
Places to walk
Parks & preserves with trails
Ranked by mapped trail miles. Directions go to the nearest marked trailhead or public parking.
Trails
Named trails
Unpaved 1.2 mi
- Sand Shed Trail0.4 mi
- Alta Sierra Trail0.2 mi
Who protects the land
289 conserved acres
Who manages it, from PAD-US. Approximate, because parcels can overlap.
Biking & sports
Bike routes, courts & fields
- Painted or protected bike lanes0.0 mi
- Off-road bike paths0.0 mi
- Shoulders & shared lanes0.0 mi
Public lands
The biggest protected places in Alta Sierra
From USGS PAD-US: who manages each one and whether visitors are welcome.
National Forest 197 acLocal Park 132 ac
| Place | Managed by | Acres | Public access |
|---|---|---|---|
| Sequoia National ForestNational Forest | U.S. Forest Service | 197 | Open |
| Greenhorn Mountain ParkLocal Park | County | 132 | Open |
Trail talk
Conditions & tips from neighbors
No recent posts about Alta Sierra's trails yet. Muddy, icy, a bridge out, where to park: a quick post helps the next person.
Sources: trails, parks, preserves, courts and bike lanes © OpenStreetMap contributors (ODbL), map data as of 2026-09-28. Conserved land: USGS Gap Analysis Project, Protected Areas Database of the United States (PAD-US). Measured against the Census town boundary.
How we measure
"Trails" are OpenStreetMap paths, bridleways, public tracks and unpaved footways, plus footways inside a park or preserve or on a named trail route. Sidewalks are left out. Areas are counted on a 20-meter grid, so overlapping parcels count once. "Conserved" includes conservation easements, which protect land from development but are usually private property. Trailheads are the nearest marked trailhead, public parking lot or information board within about 150 meters of a preserve. Dog rules come from OpenStreetMap when someone has tagged them; otherwise we show what's typical for the land manager, or say the rules aren't recorded.