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Thunder Pass via American Lakes Trail route map
Difficulty: DifficultOut and Back

Thunder Pass via American Lakes Trail

Walden, Colorado

9.8 mi

Distance

2,556 ft

Elev. Gain

4h 10m

Est. Time

Out & Back

Route Type

Difficult

Difficulty

About This Trail

Thunder Pass via American Lakes Trail is an out-and-back trail in Routt National Forest, managed by the United States Forest Service, in Jackson County, Colorado. It is 9.8 miles long and gains 2,556 feet. The nearest town is Grand Lake, Colorado, about 17 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:3,002 ft
Max:3,491 ft
Gain:779 ft
Loss:779 ft
Elevation profileA line rising and falling between 3,002 ft and 3,491 ft across 9.8 mi along the route, drawn from start to end.3,002 ft3,165 ft3,328 ft3,491 ft0.0 mi2.4 mi4.9 mi7.3 mi9.8 mi

Elevation at the labelled points along this route
PointDistance from startElevation
Start0.0 mi3,004 ft
High point4.8 mi3,491 ft
End9.8 mi3,004 ft

Trail Details

Route Type
Out & Back

Official sources & verification

Managed by United States Forest Service

Verify before you go

Managing agency

Where it is

Nearest town:
Grand Lake, CO · about 17 mi away
County:
Jackson County, CO
Jurisdiction:
Routt National Forest · United States Forest Service

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.

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