Distance from Great Falls, MT to Phoenix, AZ is 1229Miles or 1978 Km. You can get this distance about 18 hours 18 mins. If you want to planning travel with plane for 973 Miles or 1566 Km, You can get this distance about 2 hours 35 mins .
A car with an average MPG will needs 56.9 gallons of gas to get the route between these points.
The estimated cost of gas to get between Great Falls, MT and Phoenix, AZ is $129.16.
During the route, an average car will release 1114.78 pounds of CO2 to the atmosphere. Your carbon footprint is 0.91 pounds of CO2 per mile.
* Average US MPG used for calculations is 21.6 MPG.
* Average US gas price used for calculation is 2.27 per gallon.