There are
2,004 mi
from Auburn, WA to Dekalb, IL
That's the driving distance. It would take 1 day 10 hours to go from Auburn, Washington to Dekalb, Illinois.
The flight distance (direct flight from Auburn, WA to Dekalb, IL) is 1,674.09 mi.
2,004 mi = 3,225.57 kms