There are
844 mi
from Ridgewood, NJ to Dekalb, IL
That's the driving distance. It would take 15 hours 52 mins to go from Ridgewood, New Jersey to Dekalb, Illinois.
The flight distance (direct flight from Ridgewood, NJ to Dekalb, IL) is 759.71 mi.
844 mi = 1,357.70 kms