There are
417 mi
from Omaha, NE to Sycamore, IL
That's the driving distance. It would take 7 hours 43 mins to go from Omaha, Nebraska to Sycamore, Illinois.
The flight distance (direct flight from Omaha, NE to Sycamore, IL) is 380.93 mi.
417 mi = 671.13 kms