There are
340 mi
from Dearborn, MI to Sycamore, IL
That's the driving distance. It would take 6 hours 28 mins to go from Dearborn, Michigan to Sycamore, Illinois.
The flight distance (direct flight from Dearborn, MI to Sycamore, IL) is 283.14 mi.
340 mi = 547.79 kms