795 miles taking this route:
It is 778 miles according to Google Maps.
Idaho Falls is a city in Idaho, it is not a waterfall. The elevation of Idaho Falls is 4,700 ft.
I believe you are referring to 'Meadow, Utah'. I could not find a town exactly 315 miles south of Idaho Falls, Idaho on I-15, but there is a town that is 316.7 miles south of Idaho Falls, Idaho named 'Meadow, Utah'. This is probably the town that you are referring to. Of course, that may vary according to how the distance is measured.
212 miles taking I-15 NORTH.
It is a 2038.0 mi drive
lincoln, nebraska
Approximately 576 miles
The top five in order are Boise, Nampa, Meridian, Idaho Falls. Pocatello,
It is 905 miles.
The nearest city to half way between Idaho Falls Idaho and Rapid City SD is Casper, Wyoming. But, it is somewhat closer to Rapid City.
Lake Havasu City, Arizona covers a total area of 43.1 square miles (111.6 square kilometers) and as of 2010, has a population of 55,657.
The distance from Lake Havasu, Az to Phx, Az is 180 miles