Parks, trails & the outdoors in O'Brien
About 1% of O'Brien is conserved land, roughly 226 acres. There are about 3.4 miles of mapped trails.
Conserved land, trails & bike routes
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1 named trail
226 conserved acres
Who manages O'Brien’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.
| Place | Managed by | Acres | Public access |
|---|---|---|---|
| Miscellaneous State Resource Management Area | State natural resources | 226 | Open |
O'Brien and its neighbors
O'Brien has the second most mapped trails of the 4 towns around it. Tap a town to see its outdoors.
Trail talk
Conditions, parking and favorite walks from O'Brien neighbors.
Trails, parks, preserves, courts and bike lanes © OpenStreetMap contributors (ODbL), map data as of 2026-09-28. Conserved land: USGS Gap Analysis Project, 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.