Boulder Mountains
Idaho
Elevation Range
6,000 ft - 12,662 ft
Notable Peaks
5
Coordinates
43.9021, -114.4092
About Boulder Mountains
The Boulder Mountains are a remote and rugged mountain range located in central Idaho. Spanning over 100 miles, the range is characterized by steep, granite-dominated peaks, deep glacial valleys, and alpine tundra environments. The terrain is highly variable, ranging from gentle, forested slopes to sheer rock faces and jagged ridgelines. Numerous lakes, streams, and glaciers can be found throughout the range, which was heavily glaciated during the last ice age.
Notable Peaks
Diamond Peak
11,331 ft
Thompson Peak
10,751 ft
Snowyside Peak
10,651 ft
Castle Peak
10,610 ft
Mount Borah
12,662 ft
Activities
Best Seasons
summer
fall
Gateway Towns
Data Source
Geographic data from USGS Geographic Names Information System (GNIS). Descriptions generated with AI assistance.