Marin County Parks and Open Space Department

Trail Updates

The Marin County Open Space District (MCOSD) manages approximately 249 miles of fire roads and trails on 34 open space preserves. Certain fire roads and trails are temporarily closed because of wet weather conditions, natural hazards, wildland fire, construction activities, and/or resource restoration projects. Fire roads and trails are closed to protect natural resources and user safety. Depending on site conditions, closures may affect some or all uses including bicyclists, equestrians, pedestrians, and vehicles.

The MCOSD posts closure signs at trailheads to notify visitors of current use restrictions and to remind visitors to use alternate routes. Please cooperate with closure restrictions while visiting the MCOSD lands; violators are subject to citation. Conditions and closures may change without notice on a daily basis due to weather, natural hazards, wildland fire, and/or the MCOSD activities. Visit related pages to learn about safety, rules and regulations, and the MCOSD policies. For questions about the MCOSD fire road and trail closures, contact Superintendent Brian Sanford at (415) 473-7473.

Road and Trail Maintenance Projects

The Marin Municipal Water District will be repairing a pipeline on Crown Road Fire Road at Baltimore Canyon Preserve. Work will be mobilizing on April 11, 2016 with anticipated completion by April 14. 2016. Pedestrians will have through access. Non-emergency vehicle traffic may be delayed during working hours.

To improve emergency response ability for the Marin County Fire Department and access for preserve visitors, the MCOSD trail crew will be conducting trail maintenance activities on Smith Ridge Fire Road and Sunrise Fire Road (formerly Gunshot Fire Road) at Loma Alta Preserve. The roads will be closed periodically Monday through Thursday from 7:00am to 4:00pm for the months of April, May, and June 2016. Heavy equipment and materials necessary for the work may be on or adjacent to the fire road at all times for the duration of the project. For more information Contact Brian Sanford at (415) 473-7473.

The MCOSD trail crew continues to conduct trail maintenance activities on the Big Rock Ridge Trail, adjacent to and through the Lucas Valley Open Space Preserve, through April 28, 2016, Monday through Thursday from 7:30am to 4:00pm. The trail is now open to the public, but please proceed through work areas with caution and be courteous when passing, as crews and equipment will be on the trail.

Seasonal Fire Road Closures

Baltimore Canyon Preserve

Citron Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Blithedale Summit Preserve

Middle Summit Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Glen Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Camino Alto Preserve

Del Casa Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Cascade Canyon Preserve

Cascade Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Gary Giacomini Preserve

Conifer Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Cortez Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

East Sylvestris Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Manzanita Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

San Geronimo Ridge Fire Road East closes to vehicles, for natural resource protection.
Current status: Closed

San Geronimo Ridge Fire Road West closes to vehicles, for natural resource protection.
Current status: Closed

Summit Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

White Hill Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Horse Hill Preserve

Horse Hill Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Loma Verde Preserve

Chicken Shack Fire Road closes to vehicles, for natural resource protection.
Current status: CLosed

Little Cat Road Fire closes to vehicles, for natural resource protection.
Current status: Closed

Pebble Beach Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Ponti Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Via Escondia Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Winged Foot Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Lucas Valley Preserve

Luiz Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Ring Mountain Preserve

Endeavor Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Reed Ranch Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Terra Linda/Sleepy Hollow Preserve

Cemetery Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Del Ganado Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Mt. Muir Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Ridgewood Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Terra Linda Ridge Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

White Hill Preserve

White Hill Fire Road closes to vehicles, for natural resource protection.
Current status: Closed

Seasonal Trail Closures

Gary Giacomini Preserve

The Willis Evans Trail closes to bicyclists and equestrians, for Coho salmon habitat protection.
Current status: Closed

Indian Tree Preserve

The Upper Meadow Trail closes to equestrians, for soil conservation.
Current status: closed

The Rent Barn Trail closes to equestrians, for soil conservation.
Current status: Closed

The Deer Camp Cutoff Trail closes to equestrians, for soil conservation.
Current status: Closed

Roy’s Redwoods Preserve

The Roy’s Redwoods Loop Trail closes to equestrians, for soil conservation.
Current status: Closed

The Sprint Rock Trail closes to equestrians, for soil conservation.
Current status: Closed

Updated On:

04.14.16

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