There are
1,689 mi
from Kennewick, WA to Marshfield, WI
That's the driving distance. It would take 1 day 5 hours to go from Kennewick, Washington to Marshfield, Wisconsin.
The flight distance (direct flight from Kennewick, WA to Marshfield, WI) is 1,400.43 mi.
1,689 mi = 2,718.38 kms