Distance from Casper, WY to Great Falls, MT is 493Miles or 794 Km. You can get this distance about 7 hours 32 mins. If you want to planning travel with plane for 402 Miles or 647 Km, You can get this distance about 1 hours 21 mins .
A car with an average MPG will needs 22.82 gallons of gas to get the route between these points.
The estimated cost of gas to get between Casper, WY and Great Falls, MT is $51.8.
During the route, an average car will release 447.09 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.