Helena MT to Calgary AB road trip via Interstate 15 and Alberta Highways 2, 3, 4

0:00 Helena, MT 0:45 Interstate 15 North 18:23 descending 24:23 the Great Plains 33:47 Great Falls, MT 36:27 Interstate 15 North 1:03:13 Marias River crossing 1:05:53 Shelby, MT (rail cars) 1:07:37 Interstate 15 North 1:20:47 US-Canada border crossing (Sweet Grass, Coutts Port of Entry) 1:23:02 Alberta Highway 4 North 1:49:13 Lethbridge, AB 1:57:17 Alberta Highway 3 West 2:11:51 Alberta Highway 2 North 2:59:07 Calgary, AB