About 26% of Manila is conserved land, roughly 115 acres. There are about 1.9 miles of mapped trails, and the biggest networks are in Manila Dunes Recreation Area (0.6 mi).
Conserved land, trails, parks and bike routes in Manila, measured from OpenStreetMap and USGS data.
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.
Counts include school and college facilities, which aren't always open to the public.
| Place | Managed by | Acres | Public access |
|---|---|---|---|
| Mad River Slough Wildlife AreaState Conservation Area | State fish & wildlife | 63 | Open |
| Humboldt Coastal Nature CenterPrivate Recreation or Education | Land trusts & nonprofits | 23 | Restricted |
| Manila Community ParkLocal Park | Regional agency | 15 | Open |
| Manila Dunes Recreation AreaLocal Recreation Area | Regional agency | 9 | Open |
| Unnamed Site - Friends of the DunesPrivate Other or Unknown | Land trusts & nonprofits | 5 | Open |
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.