There are
869 mi
from Lawton, OK to Sycamore, IL
That's the driving distance. It would take 15 hours 41 mins to go from Lawton, Oklahoma to Sycamore, Illinois.
The flight distance (direct flight from Lawton, OK to Sycamore, IL) is 732.26 mi.
869 mi = 1,398.55 kms