There are
1,638 mi
from Cottonwood, AZ to Dekalb, IL
That's the driving distance. It would take 1 day 5 hours to go from Cottonwood, Arizona to Dekalb, Illinois.
The flight distance (direct flight from Cottonwood, AZ to Dekalb, IL) is 1,349.62 mi.
1,638 mi = 2,635.78 kms