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Harper Lake route map
Difficulty: EasyLoop

Harper Lake

Louisville, Colorado

1.0 mi

Distance

131 ft

Elev. Gain

20m

Est. Time

Loop

Route Type

Easy

Difficulty

About This Trail

Harper Lake is a loop trail in Boulder County, Colorado. It is 1 mile long and gains 131 feet. It is in or next to Louisville, Colorado.

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.

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Elevation Profile

Min:1,707 ft
Max:1,720 ft
Gain:40 ft
Loss:40 ft
Elevation profileA line rising and falling between 1,707 ft and 1,720 ft across 1.0 mi along the route, drawn from start to end.1,707 ft1,711 ft1,716 ft1,720 ft0.0 mi0.2 mi0.5 mi0.7 mi1.0 mi

Elevation at the labelled points along this route
PointDistance from startElevation
Start0.0 mi1,712 ft
High point0.6 mi1,720 ft
End1.0 mi1,712 ft

Trail Details

Route Type
Loop

Official sources & verification

Verify before you go

Where it is

Nearest town:
Louisville, CO · in or next to town
County:
Boulder County, CO

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

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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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