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Mt. Hillyer Trail from Horse Flats Campground route map
Difficulty: ModerateOut and Back
California

Mt. Hillyer Trail from Horse Flats Campground

Mount Wilson, California

3.2 mi

Distance

653 ft

Elev. Gain

1h 21m

Est. Time

Out & Back

Route Type

Moderate

Difficulty

About This Trail

Mt. Hillyer Trail from Horse Flats Campground is an out-and-back trail in Los Angeles County, California. It is 3.2 miles long and gains 653 feet. The nearest town is Monrovia, California, about 10 miles away in a straight line.

From the trail data on this page.

Trail Conditions

Trail Conditions

Unknown

We have no current condition data for this trail. Check with the operator before you go, and submit a report below if you've been recently.

No recent condition reports. Be the first to share what you see on the trail.

Elevation Profile

Min:1,722 ft
Max:1,892 ft
Gain:199 ft
Loss:199 ft
Elevation profileA line rising and falling between 1,722 ft and 1,892 ft across 3.2 mi along the route, drawn from start to end.1,722 ft1,779 ft1,835 ft1,892 ft0.0 mi0.8 mi1.6 mi2.4 mi3.2 mi

Elevation at the labelled points along this route
PointDistance from startElevation
Start0.0 mi1,734 ft
High point1.9 mi1,892 ft
End3.2 mi1,734 ft

Trail Details

Route Type
Out & Back

Official sources & verification

Verify before you go

Where it is

Nearest town:
Monrovia, CA · about 10 mi away
County:
Los Angeles County, CA

Nearest town and county from U.S. Census Bureau place records and county boundaries.

We display cached information from agency feeds. Hours, fees, permits, closures, fire restrictions, and conditions change without notice. Outdoors is not the permitting authority. Confirm current conditions for this trail using the links above before you go — you are responsible for compliance. Last verified by us: May 23, 2026. Our copy is more than a month old — please reconfirm with the agency before relying on it.Spot an error in our data?

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Legacy import — verify before navigating

Path geometry came from our pre-launch legacy database. Routes have not yet been re-verified against the operator and may differ from the actual trail.

Nearby Trails

More trails near Mt. Hillyer Trail from Horse Flats Campground

Fallen Giant

0.2 mi
TrailDifficulty: Easy

Silver Moccasin NRT

2.0 mi
TrailDifficulty: Easy
Chilao to Mt. Hillyer via Horse Flats Trail

Chilao to Mt. Hillyer via Horse Flats Trail

6.8 mi
TrailDifficulty: Moderate
Chilao to Devil's Canyon Trail

Chilao to Devil's Canyon Trail

9.5 mi
TrailDifficulty: Difficult

National Forest Hiking Trail

0.2 mi
TrailDifficulty: Easy
Creekside

Creekside

0.5 mi
TrailDifficulty: Easy

Stay nearby

Campgrounds near this trail

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