There are
1,872 mi
from Garland, TX to Kennewick, WA
That's the driving distance. It would take 1 day 8 hours to go from Garland, Texas to Kennewick, Washington.
The flight distance (direct flight from Garland, TX to Kennewick, WA) is 1,501.06 mi.
1,872 mi = 1.61 kms