Region 5 Designation

Designating roads and trails in five central Marin preserves.



After careful evaluation of public comments, the Marin County Open Space District approved the Region 5 proposed conditional designation maps in winter 2019. Read the memo pdf about conditional designation of Region 5.

Region 5 designation map thumbnail

The Region 5 Designation Map shows designated roads and trails for Region 5: Terra Linda/Sleepy Hollow, San Pedro Mountain, Santa Margarita Island, Santa Venetia Marsh, and Bald Hill Preserves.

Region 5 use map thumbnail

The Region 5 Use Map shows designated use for hikers, cyclists, and equestrians on roads and trails in Region 5 preserves.


Community Workshop

Marin County Open Space District (MCOSD) hosted a community workshop to solicit public input on the formal road and trail designation of Region 5. The workshop took place on Saturday, August 25, 2018, from 1:00pm to 3:00pm, at Embassy Suites San Rafael, 101 McInnis Parkway, San Rafael. Public comments on the Region 5 Designation were received through October 20, 2018.

Location Details

Region 5 is located north of the City of San Anselmo in the center of Marin County, east of Region 2 and south of Region 3. The region consists of five preserves totaling 1,602 acres, including Bald Hill, San Pedro Mountain, Terra Linda/Sleepy Hollow Divide, Santa Margarita Island, and Santa Venetia Marsh. The Terra Linda/Sleepy Hollow Divide Preserve is the largest in this region (1,172 acres), followed by San Pedro Mountain (358 acres) and Santa Venetia (33 acres). Region 5 contains 22 miles of roads and trails; it is the second lowest in mileage of the six regions.

The Terra Linda/Sleepy Hollow Divide Preserve is located south of Lucas Valley Road and extends in a southerly direction towards Sir Francis Drake Boulevard. Residential areas surround the Terra Linda/Sleepy Hollow Divide Preserve. The Bald Hill Preserve is located southwest of Terra Linda/Sleepy Hollow Divide and abuts Marin Municipal Water District land to the west. The San Pedro Mountain Preserve is located east of the Marin County Civic Center, and is adjacent to Harry Barbier City Park and China Camp State Park to the east.