Virtually every resident lives within a half mile of a park in Alto
Virtually every resident lives within a half mile of a park. 1 acre is park or preserve, 1.4 per 1,000 residents. 1% of Alto’s land is conserved, about 1 acre.
Ahead of 29% of U.S. towns. What drives it
What kind of outdoors town is Alto?
Read from the map. The page puts what stands out first.
How much outdoors does Alto have?
On conserved land, trails, park land and how close residents live to a park, Alto is ahead of 29% of U.S. towns. The share of residents near a park holds the grade up; trail miles pull it down.
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.
1 conserved acres
1% of Alto’s land. Who manages Alto’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.
| Parcel (PAD-US) | Managed by | Acres | Public access |
|---|---|---|---|
| Mill Valley/Sausalito Path Local Recreation Area | County | 1 | Open |
0.6 miles of bike routes
Bike lanes are often missing from the map in smaller towns, so that number is likely low.
The best walking months in Alto: April 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) | 9.8 | 10.7 | 11.8 | 13.1 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.1 | 10.1 | 9.5 |
| High (°F) | 56 | 59 | 61 | 63 | 66 | 70 | 70 | 72 | 72 | 69 | 62 | 56 |
| Rain (in) | 5.8 | 5.8 | 4.2 | 2.0 | 0.9 | 0.2 | 0.0 | 0.1 | 0.1 | 1.4 | 3.3 | 6.5 |
July is the driest month (under 0.1 in) and September the warmest (highs of 72 °F). 6.5 inches fall in December, the wettest month. The climate in Alto →
Alto 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 |
|---|---|---|---|---|---|
| Alto | 1% | under 0.1 | 1 | 99%+ | C |
| Mill Valley | 25% | 4.7 | 54 | 99%+ | A+ |
| Strawberry | 22% | 2.0 | 22 | 99%+ | A+ |
The four inputs of the Outdoors grade, from the engine; shares are of land, not water.
Questions about parks and trails in Alto
How much of Alto is conserved land?
1% of its land, against a typical 4% for a California town and 4% nationally (PAD-US). Conserved doesn’t always mean open to visitors: easements are usually private land.
Where can I bike in Alto?
0.6 miles of bike routes are on the map: 0.1 of painted or protected lanes, 0.1 of off-road paths and 0.3 of shoulders and shared lanes.
Is there public land near Alto?
59,483 acres of parks and open public land lie inside Alto or within 10 miles of it (PAD-US), 1 of them inside the town line.
How much outdoors does Alto have?
Ahead of 29% 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 Alto 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 →