There are
1,957 mi
from Whittier, CA to Sycamore, IL
That's the driving distance. It would take 1 day 10 hours to go from Whittier, California to Sycamore, Illinois.
The flight distance (direct flight from Whittier, CA to Sycamore, IL) is 1,681.40 mi.
1,957 mi = 1.61 kms