1
Fairfax Open Space Preserve
Managed by Town of Fairfax and Marin County Open Space District
103 acres1 mi of trail
Marin Open Space Trust Trail
Dog rules not recorded
No trailhead mapped yet
Outdoors · Fairfax
Fairfax, CA parks, trails & bike paths
About 4.8% of Fairfax is conserved land, roughly 68 acres. There are about 7.5 miles of mapped trails, and the biggest networks are in Fairfax Open Space Preserve (1 mi), Cascade Canyon Preserve (0.5 mi), and Elliott Nature Preserve (0.5 mi).
Conserved land, trails, parks and bike routes in Fairfax, measured from OpenStreetMap and USGS data.
At a glance
Fairfax outdoors
Conserved land
4.8%
68 of 1,418 acres
Trails
7.5 mi
3.4 mi per sq mi · 2 on conserved land
Parks & preserves
10
9 conserved acres per 1,000 residents
Bike routes
1.7 mi
1.5 mi lanes · 0.1 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.
2
Cascade Canyon Preserve
Managed by Marin County Open Space District
41 acres0.5 mi of trail
Ridge ConnectorPam's Blue Ridge Trail
Dog rules not recorded
3
Elliott Nature Preserve
Managed by Marin County Open Space District & Town of Fairfax
12 acres0.5 mi of trail
Carry Camp Loop
Dog rules not recorded
No trailhead mapped yet
4
Mount Tamalpais Watershed
Managed by Marin Municipal Water District
9 acres0.4 mi of trail
Deer Park Fire Road Extension TrailDeer Park Trail
Dog rules not recorded
All 10 parks & preserves
Fairfax Open Space Preserve103 acres · 1 mi of trail · Town of Fairfax and Marin County Open Space District
Cascade Canyon Preserve41 acres · 0.5 mi of trail · Marin County Open Space District
Elliott Nature Preserve12 acres · 0.5 mi of trail · Marin County Open Space District & Town of Fairfax
Mount Tamalpais Watershed9 acres · 0.4 mi of trail · Marin Municipal Water District
Loma Alta Open Space Preserve9 acres · 0.2 mi of trail · Marin County Open Space District
Bolinas Park7 acres · 0.1 mi of trail
Bald Hill Open Space Preserve6 acres · 0.1 mi of trail · Marin County Parks
Hawthorne Canyon Open Space Preserve1 acres · Town of San Anselmo
Upper Hawthorne Canyon Open Space Preserve1 acres · Town of San Anselmo
Piper Lane Presere1 acres · Western Alliance for Nature
Who protects the land
68 conserved acres
Who manages it, from PAD-US. Approximate, because parcels can overlap.
Biking & sports
Bike routes, courts & fields
- Painted or protected bike lanes1.5 mi
- Off-road bike paths0.1 mi
- Shoulders & shared lanes0.1 mi
Courts & fields
- Tennis9
- Baseball2
Counts include school and college facilities, which aren't always open to the public.
Nearby
Fairfax and its neighbors
Towns whose outdoors data has been built so far.
| Town | Conserved | Trails | Parks & preserves |
|---|---|---|---|
| Fairfax | 4.8% | 7.5 mi | 10 |
| Sleepy Hollow | 27.4% | 24.9 mi | 2 |
| San Anselmo | 9.9% | 6.4 mi | 17 |
Trail talk
Conditions & tips from neighbors
No recent posts about Fairfax'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.