There are
1,890 mi
from Kennewick, WA to Seagoville, TX
That's the driving distance. It would take 1 day 9 hours to go from Kennewick, Washington to Seagoville, Texas.
The flight distance (direct flight from Kennewick, WA to Seagoville, TX) is 1,518.45 mi.
1,890 mi = 3,041.17 kms