Idaho borders Wyoming to the east, Montana to the northeast, Nevada and Utah to the south, Washington and Oregon to the west, and British Columbia, Canada to the north.
Wyoming is the state that borders Montana, Idaho, Utah, Colorado, Nebraska, and South Dakota.
Idaho borders Wyoming Oregon to the west.
Idaho is the state which boarders Wyoming to the west.
Idaho borders Wyoming to the east and Montana to the northeast.
Montana
There are no states north of Idaho, Montana borders Idaho to the east, although because of Idaho's shape Montana does, for a section of southern Idaho, border Idaho's southeastern part.
Wyoming
Montana, South Dakota, Nebraska, Colorado, Utah, Idaho
Idaho, Canada, Wyoming, North Dakota, and South Dakota.
Montana
Yellowstone National Park borders Wyoming, Idaho, and Montana.
Wyoming