Distance from Helena, MT to Great Falls, MT is 91Miles or 146 Km. You can get this distance about 1 hour 32 mins. If you want to planning travel with plane for 73 Miles or 116 Km, You can get this distance about 39 mins .
A car with an average MPG will needs 4.21 gallons of gas to get the route between these points.
The estimated cost of gas to get between Helena, MT and Great Falls, MT is $9.56.
During the route, an average car will release 82.48 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.