There are
777 mi
from Greensboro, NC to Dekalb, IL
That's the driving distance. It would take 15 hours 4 mins to go from Greensboro, North Carolina to Dekalb, Illinois.
The flight distance (direct flight from Greensboro, NC to Dekalb, IL) is 627.98 mi.
777 mi = 1,249.78 kms