There are
1,715 mi
from Peoria, AZ to Dekalb, IL
That's the driving distance. It would take 1 day 6 hours to go from Peoria, Arizona to Dekalb, Illinois.
The flight distance (direct flight from Peoria, AZ to Dekalb, IL) is 1,400.72 mi.
1,715 mi = 1.61 kms