Mountains, Montana & Idaho

Mountain Ranges: ID & MT

Hold the cursor over a number to see the name.
Refer to the alphabetical list below to find a desired mountain range.

The Rocky Mountains that the Corps of Discovery crossed were 250 miles wide. To learn what they had expected to find, see the following detail from a map they may have carried with them, compiled by Nicholas King.
  • Absaroka - MT - 1
  • Adel - MT - 9
  • Albion - ID - 42
  • Anaconda - MT - 2
  • Aspen - ID - 43
  • Bannock - ID - 44
  • Bear River - ID - 45
  • Bears Paw - MT - 83
  • Beartooth - MT - 3
  • Beaverhead - MT - 4
  • Belt, Big - MT - 5
  • Belt, Little - MT - 6
  • Big Hole - ID - 46
  • Bighorn - MT - 82
  • Bighorn Crags - ID - 47
  • Big Sheep - MT - 84
  • Birdtail - MT - 90
  • Bitterroot - MT - 8
  • Black Pine - ID - 48
  • Boise - ID - 49
  • Boulder - ID - 50
  • Boulder - MT - 85
  • Bridger - MT - 9
  • Bull - MT - 79
  • Cabinet - MT - 10
  • Caribou - ID - 51
  • Cassia - ID - 52
  • Castle - MT - 11
  • Centennial - MT - 12
  • Coeur d'Alene - ID/MT - 54
  • Clearwater - ID - 53
  • Craters of the Moon - ID - 55
  • Crazy - MT - 14
  • Deep Creek - ID - 56
  • Elkhorn - MT - 15
  • Flathead - MT - 16
  • Flint Creek - MT - 17
  • Gallatin - MT - 18
  • Garnet - MT - 19
  • Glacier Nat'l Park - MT - 20
  • Gravelly - MT - 21
  • Grays Lake - ID - 57
  • Henry's Lake - ID - 58
  • Highland - MT - 22
  • Highwood - MT - 23
  • Judith - MT - 81
  • Lemhi - ID - 59
  • Lionhead - MT - 24
  • Little Rockies - MT - 78
  • Lost River - ID - 60
  • Madison - MT - 25
  • Mission - MT - 26
  • Ninemile Divide - MT - 87
  • Owyhee - ID - 61
  • Palouse Range - ID - 89
  • Payette Crest - ID - 62
  • Pioneer - ID - 63
  • Pioneer, East - MT - 28
  • Pioneer, West - MT - 27
  • Portneuf - ID - 64
  • Pruess - ID - 65
  • Pryor - MT - 29
  • Purcell - MT - 30
  • Rattlesnake - MT - 31
  • Reservation Divide - MT - 88
  • Rocky Mountain Front - MT - 32.
  • Rosebud - MT - 77
  • Ruby - MT - 33
  • St. Joe - ID - 73
  • Salish - MT - 34
  • Salmon River - ID - 66
  • Sapphire - MT - 35
  • Sawtooth - ID - 67
  • Selkirk - ID - 68
  • Seven Devils - ID - 69
  • Smoky - ID - 70
  • Snake - ID - 71
  • Snowcrest - MT - 36
  • Snowy - MT - 7
  • Soldier - ID - 72
  • Spanish Peaks - MT - 37
  • Sublette - ID - 74
  • Swan - MT - 38
  • Sweet Grass Hills - MT - 86
  • Tendoy - MT - 40
  • Tobacco Root - MT - 39
  • West - ID - 75
  • White Cloud - ID - 76
  • Whitefish - MT - 41
  • Wolf - MT - 80