Which Glendora Hiking Trails Are Open Right Now?

Ask a longtime Glendora resident whether the mountain trails are open, and you'll get two contradictory answers with equal confidence. One camp says everything's fine, the fire was two years ago. The other says don't bother, it's all still shut down. Both are half right, which is the same as being wrong, because the real answer depends entirely on which trail you mean.

The mountain and the foothills below it are not the same closure. One reopened long ago and never stopped running. The other is still closed, past its own original deadline, and has been for months. Knowing the difference is the whole trick to planning a weekend here without wasting a drive.

What the Bridge Fire actually shut down

The Bridge Fire started in September 2024 near the East Fork area by Cattle Canyon Bridge along Camp Bonita Road, and by the time it was controlled it had burned 56,030 acres across the San Gabriel Mountains. Angeles National Forest closed Glendora Mountain Road north of Big Dalton Canyon Road, along with all of Glendora Ridge Road between Mount Baldy and Glendora Mountain Road, citing burn scar instability and the risk of debris flow on the steep grades above the fire line.

That closure order, as first announced, ran through December 31, 2025. It covered the upper corridor only: the paved climb GMR regulars call the real ride, the stretch that eventually connects to the East Fork of the San Gabriel River and on toward Baldy Village. It never touched anything below Big Dalton Canyon Road.

Two years on, the road hasn't caught up to its own paperwork

Here's the part that surprises people who assumed this wrapped up on schedule. A Glendora Mountain Road business listing updated as recently as July 2026 still carries the status "closed" in its own name. A 2026 visitor review of the road describes it, in the present tense, as currently closed to Mount Baldy. Neither of those is a rumor from a hiking forum. Both post-date the original December 2025 closure window by more than half a year.

That's worth sitting with for a second. GMR gets closed all the time for ordinary reasons, Red Flag wind warnings that shut it down for a weekend, the occasional crash that blocks a lane for an afternoon. Those closures resolve fast. This one has now outlasted its own stated end date by months, which means anyone still planning a Baldy run based on last year's news is going to hit a gate. If you're heading up that way, the LA County road closures list is the one place that reflects today's status rather than a headline from 2024.

The trails that never needed the road to reopen

Here's the piece that actually changes your weekend plans. The City of Glendora maintains its own separate network entirely within city limits, roughly 19 miles across 32 trails, split between the Big Dalton Wilderness Area and the South Hills Wilderness Area. None of that is Angeles National Forest land, none of it fell under the Bridge Fire closure order, and none of it requires an Adventure Pass to park.

If you've been avoiding the foothills because you heard "the trails are closed," these are the ones you skipped for no reason:

• Big Dalton Canyon Trail – a 2.6-mile out and back that follows Big Dalton Creek past sycamores and small waterfalls, open year round, dogs welcome on leash.
• Keiser Trail – a 2.1-mile loop starting at the Big Dalton Canyon Road lot, where there's actual parking and restrooms, winding past Big Dalton Campground toward Glendora Wilderness Park.
• Coulter Pine Trail – the workout version, climbing the ridge above Big Dalton Canyon through oak woodland and stands of Coulter pine to views back over the valley.
• Mystic Canyon Trail – a short spur off the same trailhead as Big Dalton Canyon, worth combining with it since both hikes are brief.
• Rowley Wilderness Amphitheater – tucked inside Big Dalton Wilderness Area, a fire ring and picnic setup that's become enough of a local fixture that people get married there.
• South Hills Wilderness Area, including its own dog park, known for the kind of panoramic views over Glendora that don't require any elevation gain to reach.

All of that sits below the line where the fire closure starts. You can spend an entire season on these trails and never once run into a barricade.

A second closure, unrelated to the fire, worth clearing up separately

There's one more piece of this that gets folded into "the fire closures" when it has nothing to do with the Bridge Fire at all. The San Dimas Experimental Forest, just north of Glendora, is currently closed to public recreation, and that closure predates the fire by years. It's a working research site, established in 1993 as the largest chaparral experimental forest in the country, used for long-running studies on erosion, wildlife and fire behavior. It was even a UNESCO Biosphere Reserve until it withdrew from that designation in 2018. The closure there is permanent and purpose-built, not a wait-it-out situation, so there's no reopening date to track the way there is with GMR.

The quick version, if you're deciding this Saturday

What this actually means if you live here

The practical version is simple. If your Saturday plan involves the road to Baldy, check the county list before you drive up, because the closure is real and it's outlasted its own deadline. If your plan is closer to home, the Big Dalton and South Hills trail systems have been open the entire time, and there's no reason a two-year-old headline about fire closures should have kept you off the Coulter Pine ridge or out of the South Hills dog park this whole time.

The two systems just run on different clocks. One belongs to a federal forest recovering from a fire on its own timeline. The other belongs to the city, was never touched, and has been sitting there the whole time waiting for someone to stop assuming it was closed too.

If you're weighing what makes the foothill side of town work day to day, from trail access to the rhythm of the neighborhoods themselves, Maureen Haney and the team spend as much time tracking the details of daily life here as they do the market itself. Reach out anytime you want a local's read on what's actually happening on this side of the hills.