Skip to main content
Sunset Ridge Middle Sam Merrill and Mount Lowe Motorway Loop route map
Difficulty: ExpertLoop

Sunset Ridge Middle Sam Merrill and Mount Lowe Motorway Loop

La Canada Flintridge, California

10.2 mi

Distance

5,230 ft

Elev. Gain

Loop

Route Type

Expert

Difficulty

About This Trail

Sunset Ridge Middle Sam Merrill and Mount Lowe Motorway Loop is a loop trail in Los Angeles County, California. It is 10 miles long and gains 5,230 feet. It is in or next to Altadena, California.

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:634 ft
Max:1,375 ft
Gain:1,594 ft
Loss:1,594 ft
Elevation profileA line rising and falling between 634 ft and 1,375 ft across 10.2 mi along the route, drawn from start to end.634 ft881 ft1,128 ft1,375 ft0.0 mi2.5 mi5.1 mi7.6 mi10.2 mi

Elevation at the labelled points along this route
PointDistance from startElevation
Start0.0 mi642 ft
High point4.8 mi1,375 ft
End10.2 mi642 ft

Trail Details

Route Type
Loop

Official sources & verification

Verify before you go

Where it is

Nearest town:
Altadena, CA · in or next to town
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?

Reviews

No reviews yet

Be the first to share your experience and help others plan their visit.

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.

Spot an error in our data on Sunset Ridge Middle Sam Merrill and Mount Lowe Motorway Loop?