Gary Giacomini Open Space Preserve
Managed by Marin County Parks
300 acres4.3 mi of trail
Edgewood Trail
Dog rules not recorded
No trailhead mapped yetWebsite ↗
Photo: Gorthian · CC BY-SA 4.0A+Outdoors
Outdoors in Woodacre
36% of Woodacre’s land is conserved, and virtually every resident lives within a half mile of a park
Virtually every resident lives within a half mile of a park. 8.9 miles of mapped trail cross Woodacre, 5.0 per square mile of land. 36% of Woodacre’s land is conserved, about 413 acres.
Among the top 1% of U.S. towns. What drives it
Conserved land
36%
413 acres · of 1.8 sq mi of land
Trails
8.9 mi
5.0 per sq mi of land
Park land
416 ac
256 acres per 1,000 residents
Near a park
99%+
of residents within ½ mile
Bike routes
0.3 mi
0.3 mi lanes
Lakes & rivers
1
What kind of outdoors town is Woodacre?
Read from the map. The page puts what stands out first.
Outdoors grade
How much outdoors does Woodacre have?
On conserved land, trails, park land and how close residents live to a park, Woodacre is among the top 1% of U.S. towns. All four inputs put Woodacre near the top nationally; trail miles rank highest.
A+
OutdoorsA character grade: shown, never part of Woodacre’s overall grade.
Conserved land36% of the land · typical CA town 4% · U.S. 4%A+Trails5.0 miles of mapped trail per square mile of land (9 mi) · CA 0.9 · U.S. 0.4A+Park land256 acres of park per 1,000 residents (416 acres) · CA 5 · U.S. 13AParks close to homeVirtually all residents within a half mile of a park · CA 91% · U.S. 72%A+
All U.S. towns we grade (21,298)Among the top 1%
LessMore
How sure. Graded on any three of the four inputs instead, the letter would still be A+. Trails and many small parks come from OpenStreetMap, mapped by volunteers, so coverage varies from town to town; the half mile is a straight line from each census block, so a river or highway in the way isn’t counted against it.
PAD-US, OpenStreetMap (© OpenStreetMap contributors), Census 2025 Gazetteer and 2020 blocks; details in Sources below. How TownRatings grades the outdoors →
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 Gary Giacomini Open Space Preserve, with 4.3 miles. Directions go to the nearest trailhead or public parking.
White Hill Open Space Preserve
Managed by Marin County Open Space District
79 acres2 mi of trail
White Hill TrailMartha L. McCormack Trail
Dog rules not recorded
Directionsto the parking lotWebsite ↗
San Geronimo Meadow
Managed by Marin Open Space Trust
49 acres1.8 mi of trail
Dog rules not recorded
No trailhead mapped yet
San Geronimo Park
Managed by Marin County Parks
49 acres
Dog rules not recorded
No trailhead mapped yetWebsite ↗
Who protects it
413 conserved acres
36% of Woodacre’s land. Who manages Woodacre’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.
Regional agency412 ac
Land trusts & nonprofits48 ac
Local Conservation Area · 364 acLocal Park · 49 acUnknown Easement · 48 ac
The biggest protected parcels
| Parcel (PAD-US) | Managed by | Acres | Public access |
|---|---|---|---|
| Gary Giacomini Open Space Preserve Local Conservation Area | Regional agency | 295 | Open |
| White Hill Open Space Preserve Local Conservation Area | Regional agency | 69 | Open |
| San Geronimo County Park Local Park | Regional agency | 49 | Closed |
Things to do
2 places to go in Woodacre
Beaches, playgrounds, peaks, falls and more. Pick a kind.
Waterfalls in Woodacre
Roy's RifflesIn San Geronimo Meadow
DirectionsPicnic areas in Woodacre
1 picnic area without a name on the map. Tap “Show all on map” to see it.
Trails & water
3 named trails and 1 lakes & rivers
Named trails
Open to bikes · 0.9 miHorses · 0.8 miUnpaved · 3.5 mi
White Hill Trail0.8 mi
Edgewood Trail0.6 mi
Martha L. McCormack Trail0.2 mi
Lakes & rivers tap for directions
Biking & sports
0.3 miles of bike routes
Bike lanes are often missing from the map in smaller towns, so that number is likely low.
0.3 mi
painted or protected bike lanes
Courts & fields
2Tennis
1Baseball
Includes school and college facilities, which aren’t always open to the public.
When to get out
The best walking months in Woodacre: 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 | 14.6 | 13.6 | 12.4 | 11.1 | 10.1 | 9.5 |
| High (°F) | 56 | 58 | 61 | 63 | 67 | 73 | 76 | 77 | 77 | 72 | 62 | 56 |
| Rain (in) | 7.4 | 7.2 | 5.2 | 2.5 | 1.2 | 0.3 | 0.0 | 0.1 | 0.1 | 1.8 | 4.0 | 8.1 |
July is the driest month (under 0.1 in) and August the warmest (highs of 77 °F). 8.1 inches fall in December, the wettest month. The climate in Woodacre →
Next door
Woodacre and its neighbors
Woodacre has the most mapped trails of the 2 towns around it. 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 |
|---|---|---|---|---|---|
| Woodacre | 36% | 5.0 | 256 | 99%+ | A+ |
| San Geronimo | — not graded: under 1,000 residents or part of its town | ||||
The four inputs of the Outdoors grade, from the engine; shares are of land, not water.
Questions about parks and trails in Woodacre
Where can I hike in Woodacre?
The longest trail networks: Gary Giacomini Open Space Preserve, 4.3 miles; White Hill Open Space Preserve, 2 miles; San Geronimo Meadow, 1.8 miles. Each one is on the map above, with directions to the nearest trailhead or parking.
How much of Woodacre is conserved land?
36% 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.
Are dogs allowed on Woodacre’s trails?
Gary Giacomini Open Space Preserve and White Hill Open Space Preserve don’t have dog rules recorded on the map; check the signs at the trailhead.
Where can I bike in Woodacre?
0.3 miles of bike routes are on the map: 0.3 of painted or protected lanes.
Is there public land near Woodacre?
89,165 acres of parks and open public land lie inside Woodacre or within 10 miles of it (PAD-US), 416 of them inside the town line.
How much outdoors does Woodacre have?
Among the top 1% 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 Woodacre 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 →