There are
1,640 mi
from Sioux City, IA to Lake Oswego, OR
That's the driving distance. It would take 1 day 4 hours to go from Sioux City, Iowa to Lake Oswego, Oregon.
The flight distance (direct flight from Sioux City, IA to Lake Oswego, OR) is 1,316.03 mi.
1,640 mi = 1.61 kms