There are
2,045 mi
from Antioch, CA to Dekalb, IL
That's the driving distance. It would take 1 day 11 hours to go from Antioch, California to Dekalb, Illinois.
The flight distance (direct flight from Antioch, CA to Dekalb, IL) is 1,760.17 mi.
2,045 mi = 3.22 kms