156 miles
It is 169 miles according to Google Maps.
110 miles taking U.S. 87.
The air distance from Sydney, Australia, to Great Falls, Montana, is 8,211 miles. that equals 13,214 kilometers or 7,135 nautical miles.
Great Falls could be in Montana (2,136 miles), Virginia (996 miles) or South Carolina (577 miles).
700 miles
It is 638.39 miles according to MapQuest.
The flight from Great Falls, Montana to Sydney, Australia is approximately 17 hours. There is about 8,211 miles between the two locations.
The driving distance from Great Falls, Montana to Power, Montana is 25 miles via I-15 N per MapQuest. The driving time per MapQuest is 28 minutes.
264 road miles.
In Montana it is 2,486.93 miles accordiing to MapQuest. In Virginia it is 860.47 miles according to MapQuest. There is a Great Falls in Manitoba and probably elsewhere.
The driving distance from Great Falls, Montana to Helena, Montana is 90 miles via I-15 S per MapQuest. The driving time per MapQuest is 1 hour and 28 minutes.