Miles between Kennewick, WA and Thornton, CO

There are
1,086 mi
from Kennewick, WA to Thornton, CO

That's the driving distance. It would take 18 hours 27 mins to go from Kennewick, Washington to Thornton, Colorado.

The flight distance (direct flight from Kennewick, WA to Thornton, CO) is 837.05 mi.

1,086 mi = 1,747.47 kms