There are
1,075 mi
from Rapid City, SD to Las Cruces, NM
That's the driving distance. It would take 18 hours 44 mins to go from Rapid City, South Dakota to Las Cruces, New Mexico.
The flight distance (direct flight from Rapid City, SD to Las Cruces, NM) is 834.69 mi.
1,075 mi = 1,729.64 kms