Walk down to the Crown Road turnaround this week and the creek bed under the first footbridge is bare rock and dry leaves. Dawn Falls, the 30-foot cascade that gives Baltimore Canyon Open Space Preserve its reputation, isn't dripping. It won't be, not seriously, until the winter rains that typically arrive by December start refilling Larkspur Creek.

Most of what gets written about this preserve treats that absence as the whole story: come back when it's wet, or don't bother. That advice holds up if you're driving in from outside Marin and the waterfall is the entire reason for the trip. It holds up a lot less if you already live a few minutes from one of the trailheads and have been walking past this canyon for years.

Baltimore Canyon covers 193 acres in the foothills below Mount Tamalpais, straddling the line between Kentfield and Larkspur. Nearly every online guide to it, from hiking directories to regional nature writers, orients around the Madrone Avenue access point on the Larkspur side, the dead-end residential street where the Dawn Falls Trail officially begins and where a handful of marked roadside spaces fill fast on any weekend with rain in the forecast. Kentfield has its own way in, and the case for using it doesn't depend on whether the falls are running.

The Shorter Route Nobody Leads With

From Kentfield, you reach the same preserve by way of Crown Road, a small turnaround off Woodland Road and Evergreen Drive that holds roughly ten cars, or by parking along Evergreen Drive itself and picking up the Crown Road Fire Road from there. Neither spot shows up as the lead recommendation in write-ups built around chasing the waterfall, which is strange, because neither one is actually the long way in.

Hikers who've done the comparison on both sides describe the Crown Road Fire Road as reaching a junction with the Dawn Falls Trail and then descending to the falls in barely half a mile. The Larkspur approach through Baltimore Canyon proper runs closer to a mile and a quarter each way. When the falls are running, Kentfield's side gets you there faster. When they're not, that same fire road keeps going past the junction toward the Ladybug Trail, King Mountain, and Blithedale Summit, terrain that has nothing to do with the creek at all.

That longer option is where the dry season actually pays off. A straight out-and-back to the falls covers about 2.5 miles round trip with roughly 400 feet of climbing, a modest outing built around a single feature. Loop through King Mountain from the Kentfield side instead and the same preserve stretches to somewhere around 6 miles with about 600 feet of gain, closer to three hours if you're not rushing, with a stretch near the ridge that opens up to views toward the Richmond-San Rafael Bridge. That's a different hike, not a smaller version of the same one, and it's the version that's genuinely available on a weekday morning in late September when nobody else is out here hoping to catch a trickle.

What the Dry Months Are Actually For

The redwoods shading most of this route aren't old growth, and the story behind that is worth knowing before you're standing under them. Baltimore Canyon once held one of the densest concentrations of coast redwoods in the Bay Area, logged in less than a decade during the 1800s to help build San Francisco. The name traces back to the Maryland origins of the operators who ran a steam-powered sawmill here starting in 1849. What stands now resprouted from those original stumps, which explains why the canopy still feels old even though almost nothing here predates the Gold Rush. Further along the fire road, hikers pass the remains of a quarry where crews once cut blue basalt for a dam project, one of the few visible traces of the canyon's working history before it became parkland.

None of that requires water in the creek to be worth walking through, and the dry months are arguably the better window to see it. The trail stays shaded and cool even as temperatures climb elsewhere in Marin. The ground is firm instead of the mud that shows up after a real storm, when the same creek can swell enough to flood sections of trail. And you're not competing for five roadside spaces on Madrone Avenue with everyone else chasing the same waterfall guide. The tradeoff is real. If a rushing creek and a full cascade are the point of your trip, September and October will disappoint. If the point is a shaded loop close to home with a Bay view at the top, this is close to the ideal stretch of the year to do it.

There's a practical upside layered on top of that. Marin County Parks has spent this fall moving its picnic and court reservation system onto a new online platform, with the changeover taking effect October 1 after a booking blackout earlier in September. Baltimore Canyon's trailheads aren't part of any of that. Parking on Crown Road or Evergreen Drive is free street parking, no permit or reservation required, which is one less thing to plan around compared to the county's more heavily programmed picnic areas and courts.

A few things carry over no matter what month it is. Poison oak grows throughout the preserve, dense enough that a refresher on what it looks like is worth doing before leaving the main tread. Cell service drops out inside the canyon, so telling someone your route ahead of time is not a bad habit. Dogs need to stay leashed on the marked trails, though the fire roads allow off-leash travel as long as a dog reliably comes back under voice command and a leash stays within reach the whole time.

The Neighbors Who Got There First

Two names come up often enough in accounts of this trail that they're worth mentioning on their own. Janis Joplin and Jerry Garcia both lived in homes near the Dawn Falls Trail, part of the string of musicians who settled into this stretch of Marin decades ago. That detail comes from Marin County Parks' own description of the preserve, not from hiker rumor, and it fits a canyon that has always sat a little apart from the more visible parts of local history: useful for lumber and rock before it was useful for recreation, home to musicians before it was home to hikers checking a waterfall's flow online.

That's the part the waterfall-focused guides tend to skip over. Baltimore Canyon isn't one feature you drive in for when conditions line up. It's terrain with two working entrances, one built around a landmark that only performs for about four months of the year, and one that has been quietly available the rest of the time to whoever already knows which road to turn down.

Living close enough to use a trail on a Tuesday morning instead of saving it for a weekend changes what the trail is for. If you're weighing what that kind of proximity is worth, or curious how a specific pocket of Kentfield fits into your own plans, Elizabeth Green Kilgore is a good person to ask.