| Boulder Mountains | |
|---|---|
| Highest point | |
| Peak | Haystack Mountain |
| Elevation | 8,819 ft (2,688 m) |
| Coordinates | 46°08′29″N 112°19′35″W / 46.14139°N 112.32639°W |
| Geography | |
| Country | United States |
| State | Montana |
| Parent range | Rocky Mountains |
The Boulder Mountains are a mountain range running roughly north to south located west of Boulder between Helena and Butte in the U.S. state of Montana.[1] Parts of the range are in four different counties: Deer Lodge, Jefferson, Lewis and Clark, and Silver Bow.[1]
Haystack Mountain, which reaches 8,819 feet (2,688 m), is the tallest peak in the range.[2][3] The three other highest peaks are Jack Mountain at 8,752 feet (2,668 m), Bull Mountain at 8,609 feet (2,624 m), and Thunderbolt Mountain at 8,597 feet (2,620 m).[2] All four peaks are in Jefferson County.[2]