There are
1,861 mi
from Pendleton, OR to Sycamore, IL
That's the driving distance. It would take 1 day 7 hours to go from Pendleton, Oregon to Sycamore, Illinois.
The flight distance (direct flight from Pendleton, OR to Sycamore, IL) is 1,512.60 mi.
1,861 mi = 2,994.31 kms