There are
2,016 mi
from Fullerton, CA to Deerfield, IL
That's the driving distance. It would take 1 day 11 hours to go from Fullerton, California to Deerfield, Illinois.
The flight distance (direct flight from Fullerton, CA to Deerfield, IL) is 1,724.16 mi.
2,016 mi = 3.22 kms