There are
2,031 mi
from Stockton, CA to Dekalb, IL
That's the driving distance. It would take 1 day 10 hours to go from Stockton, California to Dekalb, Illinois.
The flight distance (direct flight from Stockton, CA to Dekalb, IL) is 1,734.80 mi.
2,031 mi = 3.22 kms