Miles between Idaho Falls, ID and Rapid City, SD

There are
655 mi
from Idaho Falls, ID to Rapid City, SD

That's the driving distance. It would take 12 hours 13 mins to go from Idaho Falls, Idaho to Rapid City, South Dakota.

The flight distance (direct flight from Idaho Falls, ID to Rapid City, SD) is 440.77 mi.

655 mi = 1,054.68 kms