There are
1,427 mi
from Las Cruces, NM to Dekalb, IL
That's the driving distance. It would take 1 day 2 hours to go from Las Cruces, New Mexico to Dekalb, Illinois.
The flight distance (direct flight from Las Cruces, NM to Dekalb, IL) is 1,190.11 mi.
1,427 mi = 1.61 kms