Marin County Parks and Open Space Department

The Marin County Open Space District (MCOSD) manages 250 miles of roads and trails on 34 open space preserves. Roads and trails may be temporarily closed, or use restricted, due to safety, wet weather, natural hazards, wildland fire, construction, or restoration. Please cooperate with closure signs and notices, and take alternate routes.

Seasonal Closures: Roads and Trails

Roads and trails may be closed during the rainy season, typically November through March, for visitor safety and natural resources protection.

Baltimore Canyon Preserve

Citron Fire Road closed to vehicles, for natural resource protection.

Blithedale Summit Preserve

Middle Summit Fire Road closed to vehicles for natural resource protection.

Camino Alto Preserve

Del Casa Fire Road closed to vehicles, for natural resource protection.

Cascade Canyon Preserve

Cascade Fire Road closed to vehicles, for natural resource protection.

Gary Giacomini Preserve

Conifer Fire Road closed to vehicles, for natural resource protection.
Cortez Fire Road closed to vehicles, for natural resource protection.
East Sylvestris Fire Road closed to vehicles, for natural resource protection.
Manzanita Fire Road closed to vehicles, for natural resource protection.
San Geronimo Ridge Fire Road closed to vehicles, for natural resource protection.
Summit Fire Road closed to vehicles, for natural resource protection.
Willis Evans Trail closed to bicyclists and equestrians, for Coho salmon habitat protection.
White Hill Fire Road closed to vehicles, for natural resource protection.

Horse Hill Preserve

Horse Hill Fire Road closed to vehicles, for natural resource protection.

Indian Tree Preserve

Upper Meadow Trail closed to equestrians, for soil conservation.
Rent Barn Trail closed to equestrians, for soil conservation

Loma Alta

Smith Ridge Fire Road closed to vehicles, for natural resource protection.
Sunrise Fire Road (Gunshot Fire Road) closed to vehicles, for natural resource protection.

Loma Verde Preserve

Chicken Shack Fire Road closed to vehicles, for natural resource protection.
Little Cat Road Fire closed to vehicles, for natural resource protection.
Pebble Beach Fire Road closed to vehicles, for natural resource protection.
Ponti Fire Road closed to vehicles, for natural resource protection.
Via Escondia Fire Road closed to vehicles, for natural resource protection.
Winged Foot Fire Road closed to vehicles, for natural resource protection.

Lucas Valley Preserve

Luiz Fire Road closed to vehicles, for natural resource protection.
Endeavor Fire Road closed to vehicles, for natural resource protection.
Reed Ranch Fire Road closed to vehicles, for natural resource protection.

Terra Linda/Sleepy Hollow Preserve

Cemetery Fire Road closed to vehicles, for natural resource protection.
Del Ganado Fire Road closed to vehicles, for natural resource protection.
Mt. Muir Fire Road closed to vehicles, for natural resource protection.
Ridgewood Fire Road closed to vehicles, for natural resource protection.
Terra Linda Ridge Fire Road closed to vehicles, for natural resource protection.

White Hill Preserve

White Hill Fire Road closed to vehicles, for natural resource protection.

Learn more about trail safety, rules and regulations, and the MCOSD policies. For questions about the MCOSD road and trail closures, contact Superintendent Brian Sanford at (415) 473-7473.

Updated On:

3.31.17

We update this page when closures, openings, or conditions change.