There are
658 mi
from Rapid City, SD to Holladay, UT
That's the driving distance. It would take 11 hours 48 mins to go from Rapid City, South Dakota to Holladay, Utah.
The flight distance (direct flight from Rapid City, SD to Holladay, UT) is 497.62 mi.
658 mi = 1,058.14 kms