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Monrovia Hillside Preserve
4.6 ★★★★★ 29 Google reviews · Running trail in Monrovia, California · Hours vary
Runner's snapshot
- Surface
- Not reported
- Loop distance
- Not reported
- Shape
- Loop
- Shade
- Not reported
- Access
- Not reported
Confirmed from Monrovia Hillside Preserve's own listing, the park or land manager's website, and runner reviews. Blank cells mean we could not verify that fact — we would rather say "not reported" than invent one. There is no Easy / Moderate / Hard rating on this page on purpose: a one-word difficulty score tells you nothing about whether a trail suits your run. Surface, distance, shade and hours do.
What runners say about Monrovia Hillside Preserve
“Surface is well maintained, and the views are lovely.”
“Beautiful trail, very well-kept.”
The trail itself is nice. Finding the trailhead is another story. There is no sign - you just need to "know" that what looks like someone's driveway is actually the way to the trailhead. Is this preserve supposed to be open to the public? Or just to residents of the neighborhood?
It was an easy hike. Nice weather to hike here in the winter. Flowers are blooming.
Putting this address in your GPS will get you right next to the trail head: 873 Lower Clamshell TKTL But park somewhere along Ridgeside Drive before Lower Clamshell. There are signs on Ridgeside that say “Residents Parking only” but it’s not really enforced. Very approachable hike for someone in ok shape.
It was unexpected day for us to come here, random discovery looking for a place to walk. Saw the many pretty pictures, we decided to put on the gps for here. Took us to Clamshell road toward 2 driveways that split.
Trail conditions & character
“Got off the car to asked if we can park here because the street sign say resident parking only.”
“Surface is well maintained, and the views are lovely.”
“It's a big, long, hilly walk just to get to the trail since there is no parking lot.”
Plan your run at Monrovia Hillside Preserve
The practical stuff
- AccessHours vary — hours are not posted for this trail, so check before an early or late run
- DistanceNot reported. Trail systems often quote total path mileage rather than a single loop, so measure the route you actually want before you drive out.
- ShadeNot reported. Assume some of it is exposed and carry water in summer.
- At the trailheadparking — reported by runners
- Websitecityofmonrovia.org
- Phone+1 626-256-8282
Running trails near Monrovia
Other trails within easy driving distance — useful when this one is flooded, gated, or just not the run you had in mind today.
Sunset Bench
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Monrovia Canyon Park
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City park on 80 acres with trails, camping & a waterfall, plus a nature center & cabin for events.
Kiwanis Park
4.6 ★★★★★ 148 reviews
Park with a playground and picnic tables, plus swings and slides for kids.
Gabrielino Trail Eastern Trailhead
4.7 ★★★★★ 6 reviews
