Start at the end of Woodoaks Drive and the mountain looks like one thing: a green wall behind the neighborhood, laced with fire roads, patrolled mostly by dog walkers and the occasional mountain biker. Start instead from Harry A. Barbier Memorial Park a mile or so south and you'd swear it's the same mountain, because it is. Follow either route far enough east, though, and the ground underneath you changes ownership twice more before you reach the bay side, and the rules change with it. Nobody posts a sign at the exact spot where that happens. You just find out the hard way, usually from another hiker, sometimes from a ranger.
This matters more than it should for a stretch of hillside most Dominican residents treat as an extension of the backyard. The mountain behind the neighborhood is not one preserve. It is three separate jurisdictions stitched together along a shared ridge, each with its own dog policy, its own hours, and its own idea of what counts as a trail.
One Mountain, Three Owners
The chunk most people mean when they say "the preserve" is San Pedro Mountain Open Space Preserve, managed by Marin County Parks. Its main access points are the Woodoaks Drive trailhead on the Dominican side and the Gold Hill entrance out of Harry A. Barbier Memorial Park, which is city of San Rafael property, not county land, even though the trail underfoot doesn't announce the switch. Keep climbing past Barbier Park toward the bay-facing slope and you eventually cross into China Camp State Park, run by California State Parks under a different rulebook entirely.
Three owners. Three sets of rules. One continuous trail surface with no fence, no gate, and in most spots no sign to mark the line.
Here's the cheat sheet worth keeping on your phone before your dog does the deciding for you:
| Access Point | Managed By | Dog Rule |
|---|---|---|
| Woodoaks Drive trailhead | Marin County Parks (San Pedro Mountain Preserve) | Leashed at all times, 6-foot leash max, 3 dogs per person max |
| Gold Hill trailhead, Harry A. Barbier Memorial Park | City of San Rafael | Trail access point into the county preserve; county leash rules apply once you're on preserve trails |
| Ridge trails toward China Camp | California State Parks | No dogs permitted anywhere in the park, open sunrise to sunset only |
The practical result is that the same walk can start as a leashed county hike and end as a hike your dog isn't allowed to be on at all, without a single moment where that felt like a decision you made.
Where the Rules Actually Bite
If you've lived in Dominican long enough, you may remember a looser version of this mountain, one where a dog under solid voice control could work the fire roads off leash. That memory isn't wrong, exactly, it's outdated. Marin County's current posted policy for San Pedro Mountain Preserve is unambiguous: dogs on leash at all times, leash capped at six feet, a hard limit of three dogs per person, and no commercial dog walking permitted in the preserve at all. Whatever informal off-leash culture used to exist on those fire roads, it isn't the rule today, at least not on county ground.
Cross into China Camp and the leash question becomes irrelevant, because dogs aren't allowed there in any form. The park's boundary runs through the same ridge system as the preserve and Barbier Park, which means a hiker who started at Woodoaks Drive with every intention of staying on county land can find themselves, twenty minutes later, standing at the edge of a park where their dog technically shouldn't be. Multiple entrances feed into China Camp from the surrounding hillside, which makes consistent enforcement genuinely difficult and means the boundary functions more as an honor system than a checkpoint.
None of this is a reason to avoid the mountain. It's a reason to know, before you leave the driveway, which loop you're actually planning to walk.
Picking Your Route
Three named options cover most of what Dominican residents actually do up there, and they serve different moods.
- Gold Hill Grade to the old Nike Missile Site. The most walked route on the mountain, starting from Harry A. Barbier Memorial Park and climbing to a decommissioned Cold War missile installation that now serves as nothing more than a wide, open viewpoint. It's roughly four miles round trip and takes most hikers a bit over two hours. This is the route for a Saturday morning when you want a real climb but don't want to plan around it.
- Wood Oaks Trail from the Woodoaks Drive trailhead. The longest and steepest single trail inside the preserve itself, close to four and a half miles with the most elevation gain of any route on the mountain. This is the one for a longer morning, not a quick loop before errands.
- Scettrini Fire Road and the JCC Loop. A more moderate combination that shares its fire road stretch with mountain bikers, though the JCC Loop segment itself is closed to bikes. A reasonable middle option if Gold Hill feels too crowded and Wood Oaks feels like too much.
Whichever route you pick, the underlying geology doesn't change: north-facing slopes thick with oak, bay, and madrone, a few surprising pockets of redwood tucked into the upper canyons, and open grassland near the ridgeline that fills with wildflowers each spring.
The Practical Stuff Nobody Posts at the Trailhead
A few things worth knowing before you're already on the mountain and wishing you'd known them at home. There are no restrooms anywhere in the preserve, on any route. Trails turn to real mud during the rainy season, not just puddle-mud but the kind that adds twenty minutes to a familiar loop. Poison oak grows along several stretches of trail, especially lower down, and tick checks afterward aren't optional if you or your dog spent any time off the main tread. Parking at the Woodoaks Drive trailhead is street parking only, in a residential neighborhood, and the county is specific about not blocking driveways or gates. It's a small ask that keeps the access point open for everyone, including the neighbors who live there year-round and didn't sign up to have their curb treated as a trailhead lot.
Down the Hill
Most loops eventually spit you back out somewhere near Dominican University or the flat streets below it, and from there it's a short drive to Montecito Plaza, which has become the unofficial finish line for a lot of these Saturday mornings. Trader Joe's covers the grocery run you were going to make anyway. See's Candies is a few doors down if the hike earned something sweeter than a protein bar. Planet Juice handles the post-hike smoothie crowd, and F45, voted best fitness studio in Marin by Marin Independent Journal readers, pulls in the people who consider four miles of fire road a warmup rather than the main event.
It's a small loop within the bigger one: house to trailhead, trailhead to ridge, ridge back down to a shopping center that's been serving this stretch of San Rafael for decades. The mountain doesn't care which owner's land you're standing on. The rules do. Knowing the difference before you leash up is the part that actually changes your Saturday.
If you're weighing a move to a neighborhood like this one, or thinking about what a home near this kind of trail access is actually worth, that's the sort of local detail that doesn't show up in a listing description. Garrett Burdick has spent years working Dominican and the rest of Marin County closely enough to know which side of the ridge you're standing on. Let's Connect when you're ready to talk through what that local knowledge means for your next move.
