Lost River-Lemhi Ranges

Range TypeBogus mountain grouping for this site
Highest PointBorah Peak (12,662 ft/3859 m)
CountriesUnited States
Area3,745 sq mi / 9,700 sq km
Area may include lowland areas
Extent115 mi / 185 km North-South
69 mi / 111 km East-West
Center Lat/Long44° 22' N; 113° 30' W
Map LinkMicrosoft Bing Map

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Map of Lost River-Lemhi Ranges
Click on red triangle icons for links to other ranges.

Note: Range borders shown on map are an approximation and are not authoritative.
Click Here for a Full Screen Map

Other Ranges: To go to pages for other ranges either click on the map above, or on range names in the hierarchy snapshot below, which show the parent, siblings, and children of the Lost River-Lemhi Ranges.
Idaho-Bitterroot Rocky MountainsLevel 3 (Parent)
         Clearwater MountainsLevel 4 (Sibling)
         Bitterroot RangeLevel 4 (Sibling)
         Salmon River MountainsLevel 4 (Sibling)
         Sawtooth-Ketchum-Boise AreaLevel 4 (Sibling)
         Lost River-Lemhi RangesLevel 4
                 Lost River RangeLevel 5 (Child)
                 Lemhi RangeLevel 5 (Child)

Major Peaks of the Lost River-Lemhi Ranges

Ten Highest Peaks
RankPeak NameftmRange5
1.Borah Peak12,6623859Lost River Range
2.Leatherman Peak12,2283727Lost River Range
3.Mount Church12,200+3719+Lost River Range
4.Diamond Peak12,1973718Lemhi Range
5.Mount Breitenbach12,1403700Lost River Range
6.Lost River Mountain12,0783681Lost River Range
7.Mount Idaho12,0653677Lost River Range
8.Donaldson Peak12,0233665Lost River Range
9.USGS Peak11,9823652Lost River Range
10.No Regret Peak11,9723649Lost River Range
Sub-peaks are excluded from this list. List may not be complete, since only summits in the PBC Database are included.
Child Range High Points
RankPeak NameftmRange5
1.Borah Peak12,6623859Lost River Range
2.Diamond Peak12,1973718Lemhi Range

Photos of Peaks in the Lost River-Lemhi Ranges

Borah Peak

A view of the cleft forepeak along Borah's north ridge (1991-08-23).
Diamond Peak
Click on photo for original larger-size version.
Diamond Peak from the approach road. The 4x4 trailhead is below the trees on the left (2015-07-03). Photo by Eric Kassan.
Click here for larger-size photo.

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