On a clear Saturday morning, the lot at Edgewood Park fills before nine. Cars circle for a spot, hikers cluster at the trailhead sign, and the wildflower loop gets crowded enough that you spend as much time stepping aside for other groups as you do looking at the poppies. A few hundred yards away, past the turn onto Crestview Drive and down Edmonds Road, there's a second parking area with room for twenty three cars. Most mornings it isn't full. That second lot belongs to Pulgas Ridge Open Space Preserve, and it sits close enough to San Carlos that residents drive past its entrance on their way to somewhere else almost every weekend.
Here's the thing worth knowing if you live here: San Carlos isn't really a one-trail town. The hills above Crestview Drive and Alameda de las Pulgas hold three separate parks stacked close together, and the one everyone skips is the only one that lets your dog off leash.
Three Parks, Not One
Edgewood Park and Natural Preserve gets the attention, and it earns some of it. It spans 467 acres of serpentine grassland and draws hikers from across the Peninsula for its spring wildflower displays. But Edgewood doesn't allow dogs at all, and its popularity means solitude is not really on offer.
Two other parks sit closer to the center of town than most residents realize. Eaton Park and Big Canyon Park are both inside San Carlos, near the Redwood City border, and Pulgas Ridge Open Space Preserve sits a stone's throw across Edgewood Road from Edgewood Park's day camp. One local hiker who lives near the Whipple Avenue and Alameda de las Pulgas intersection has counted five separate parks within walking distance of home, Eaton, Big Canyon, and Pulgas Ridge among them. That's a cluster of hill access most residents treat as a single park because they've only ever visited the famous one.
What 17.5 Acres of Off-Leash Actually Buys You
Pulgas Ridge is a 366-acre preserve managed by the Midpeninsula Regional Open Space District, with close to six miles of trail winding through canyons and up to a ridge with views toward the bay. The detail that separates it from every other hill park nearby is a 17.5-acre off-leash area in the center of the preserve, reachable from the Cordilleras Trail, the Polly Geraci and Hassler trails, and the Blue Oak Trail. Inside that zone, dogs can run free as long as they stay under voice control. Outside it, and on every other trail in the preserve, leashes go back on.
Bikes are not allowed anywhere in the preserve, which keeps the single track calmer than multi-use trails elsewhere on the Peninsula. Equestrians do use the trails, and the district's posted etiquette asks hikers and dog walkers to yield to horses and step aside on narrow sections.
Two Trails, Two Different Sundays
The preserve splits cleanly into an easy option and a real workout, and knowing the difference before you park saves you from committing to the wrong one.
The gentle route starts right at the Edmonds Road lot. It runs 0.8 miles at a very slight grade through a meadow to a bench by Cordilleras Creek, and the district built it to accommodate wheelchairs and strollers. Past that bench, the trail turns into a paved road with a grade that exceeds 10 percent, too steep for the same accessibility.
The longer option, sometimes called the Dream Trail Loop by hikers using route-tracking apps, covers close to 5.8 miles with about 858 feet of elevation gain and takes most people just under three hours. It threads through the Dusky Footed Woodrat Trail toward the ridge's roughly 760-foot summit, connects to the Polly Geraci Trail, and loops back past the off-leash area via the Hassler Trail before returning to the lot on the Blue Oak Trail. The terrain shifts from oak woodland to chaparral along the way, and the ridge top opens up views toward the Santa Cruz Mountains and Silicon Valley that Edgewood's flatter grassland doesn't offer.
| Route | Distance | Elevation Gain | Best For |
|---|---|---|---|
| Cordilleras Trail (out and back) | 0.8 mi | Minimal | Strollers, wheelchairs, short walks |
| Dream Trail Loop | 5.8 mi | ~858 ft | Full workout, ridge views, off-leash access |
A Sanatorium Once Stood Here
The land itself carries a history that most people walking through never learn. Before the Peninsula Open Space District purchased the site in 1983, it was the location of a tuberculosis sanatorium. The building was later demolished, but old foundations and stone walls are still visible along some of the trails, quiet markers of a use for this hillside that has nothing to do with hiking or dogs.
Spring is the season to see the preserve at its most alive. Around 90 native species of trees, shrubs, ferns, and wildflowers grow here, and April visitors tend to catch blooms like Indian warrior, hound's tongue, mule's ears, and milkmaids, along with three members of the lily family: fetid adder's tongue, giant trillium, and mission bells. Late summer, when the hills have dried out and gone gold, is a quieter time to walk, though it's also the season when poison oak is easiest to brush against if you stray off the marked path, and ticks are more active in the grass at trail edges. The district's trail crews keep the vegetation trimmed back from the main routes, which helps, but staying on the marked trail is still the simplest way to avoid both.
Getting There
From Highway 280, take the Edgewood Road exit and head northeast about three quarters of a mile toward Redwood City. Turn left on Crestview Drive, then take an immediate left onto Edmonds Road, which leads straight to the preserve entrance. The lot holds 23 standard spaces plus two ADA spaces, and it tends to fill up on weekend mornings during wildflower season but rarely reaches Edgewood's level of congestion the rest of the year.
What This Means If You Live Here
None of this requires a decision from anyone. It's not a case for or against anything. It just means the next time your dog is pacing by the door on a Saturday and Edgewood's lot looks full from the road, there's a second trailhead less than a mile away that most of your neighbors have never turned into. The loop is longer, the views are arguably better from the ridge, and it's the only one of the three parks that lets the leash come off.
If you've lived in San Carlos for years and have only ever hiked Edgewood, the Dream Trail Loop is worth learning before next spring's wildflowers arrive. And if you're the kind of person who already knows every trail in these hills and finds yourself thinking about what a home near them is actually worth, The Fallant Group works this stretch of the Peninsula regularly and is happy to talk through what you're seeing in the market, no matter what stage you're at.
