Skip to main content

Status unknown — verify before visiting

We don't have current condition data for this trail. Check with the land manager before you go.

Lost River Mountain
ExpertOut and Back

Lost River Mountain

Mackay, Idaho

4.5 mi

Distance

4,619 ft

Elev. Gain

3h 43m

Est. Time

Out & Back

Route Type

Expert

Difficulty

About This Trail

Imported description
The 6th highest mountain in Idaho is Lost River Mountain. This is steep the whole way up and down, with lots of sliding near the top due to the angle and loose rocks. There is a short ridge walk north from the top of highway 93. It is worth it if you want to get all 9 of Idaho's 12,000+ feet mountains.

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:2,325 ft
Max:3,662 ft
1,408 ft
1,408 ft
2,325 ft2,771 ft3,216 ft3,662 ft0.0 mi1.1 mi2.3 mi3.4 mi4.5 mi

Trail Details

Route Type
Out & Back
Surface
Dirt

Official sources & verification

Managed by United States Forest Service

Verify before you go

Managing agency

Verify by phone or mail

  • Address:ID
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.

Hunt context

This trail crosses hunting units

During hunting seasons, wear blaze orange and check regulations — see the Idaho hunting page

Spot an error in our data on Lost River Mountain?