Distance from Knoxville, TN to Fort Smith, AR is 677Miles or 1089 Km. You can get this distance about 9 hours 47 mins. If you want to planning travel with plane for 590 Miles or 950 Km, You can get this distance about 1 hours 45 mins .
A car with an average MPG will needs 31.34 gallons of gas to get the route between these points.
The estimated cost of gas to get between Knoxville, TN and Fort Smith, AR is $71.14.
During the route, an average car will release 614.01 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.