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Arthur's Rock, Timber, Westridge, and South Valley Loop route map
Difficulty: DifficultLoop

Arthur's Rock, Timber, Westridge, and South Valley Loop

Fort Collins, Colorado

8.5 mi

Distance

2,201 ft

Elev. Gain

3h 42m

Est. Time

Loop

Route Type

Difficult

Difficulty

About This Trail

Arthur's Rock, Timber, Westridge, and South Valley Loop is a loop trail in Lory State Park, managed by Colorado Parks and Wildlife, in Larimer County, Colorado. It is 8.5 miles long and gains 2,201 feet. The nearest town is Fort Collins, Colorado, about 2 miles away in a straight line.

From the trail data on this page. For conditions and closures, see official sources.

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.

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Elevation Profile

Min:1,666 ft
Max:2,124 ft
Gain:671 ft
Loss:671 ft
Elevation profileA line rising and falling between 1,666 ft and 2,124 ft across 8.5 mi along the route, drawn from start to end.1,666 ft1,819 ft1,971 ft2,124 ft0.0 mi2.1 mi4.3 mi6.4 mi8.5 mi

Elevation at the labelled points along this route
PointDistance from startElevation
Start0.0 mi1,717 ft
High point3.4 mi2,124 ft
End8.5 mi1,717 ft

Trail Details

Route Type
Loop

Official sources & verification

Managed by Colorado Parks and Wildlife

Verify before you go

Source of truth

Where it is

Nearest town:
Fort Collins, CO · about 2 mi away
County:
Larimer County, CO
Jurisdiction:
Lory State Park · Colorado Parks and Wildlife

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

Verify by phone or mail

  • Operator:(970) 493-1623
  • Address:708 Lodgepole Drive, Bellvue, CO 80512 · CO
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.

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