There are
1,552 mi
from Tucson, AZ to Decatur, IL
That's the driving distance. It would take 1 day 4 hours to go from Tucson, Arizona to Decatur, Illinois.
The flight distance (direct flight from Tucson, AZ to Decatur, IL) is 1,331.18 mi.
1,552 mi = 1.61 kms