There are
897 mi
from Norwalk, CT to Sycamore, IL
That's the driving distance. It would take 16 hours 58 mins to go from Norwalk, Connecticut to Sycamore, Illinois.
The flight distance (direct flight from Norwalk, CT to Sycamore, IL) is 791.23 mi.
897 mi = 1,442.98 kms