From Yellowstone Park North Entrance

From the north entrance, take Highway 89 north from Gardiner to Livingston. In Livingston, take I−90 west to Bozeman and follow the I−90 Westbound directions.

From Yellowstone Park West Entrance

From the west entrance, take US Highway 191 north (aka MT−64) from West Yellowstone to Bozeman. (See the Option 2 map in the I−15 directions.) Be sure to turn right to stay on Highway 191 at Four Corners. In Bozeman, turn left on 7th and go north until you pass over I−90, then follow the I−90 Eastbound directions.