Distance from Rockford, IL to Rapid City, SD is 840Miles or 1351 Km. You can get this distance about 11 hours 56 mins. If you want to planning travel with plane for 724 Miles or 1164 Km, You can get this distance about 2 hours 3 mins .
A car with an average MPG will needs 38.89 gallons of gas to get the route between these points.
The estimated cost of gas to get between Rockford, IL and Rapid City, SD is $88.28.
During the route, an average car will release 761.93 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.