There are
1,966 mi
from Seattle, WA to Machesney Park, IL

That's the driving distance. It would take 1 day 10 hours to go from Seattle, Washington to Machesney Park, Illinois.

The flight distance (direct flight from Seattle, WA to Machesney Park, IL) is 1,653.75 mi.

1,966 mi = 1.61 kms