There are
1,702 mi
from Tucson, AZ to Dekalb, IL
That's the driving distance. It would take 1 day 6 hours to go from Tucson, Arizona to Dekalb, Illinois.
The flight distance (direct flight from Tucson, AZ to Dekalb, IL) is 1,388.42 mi.
1,702 mi = 1.61 kms