There are
1,018 mi
from Warwick, RI to Dekalb, IL
That's the driving distance. It would take 19 hours 31 mins to go from Warwick, Rhode Island to Dekalb, Illinois.
The flight distance (direct flight from Warwick, RI to Dekalb, IL) is 891.25 mi.
1,018 mi = 1.61 kms