There are
1,215 mi
from Rapid City, SD to Lake Oswego, OR
That's the driving distance. It would take 21 hours 42 mins to go from Rapid City, South Dakota to Lake Oswego, Oregon.
The flight distance (direct flight from Rapid City, SD to Lake Oswego, OR) is 956.02 mi.
1,215 mi = 1,955.09 kms