Miles between Thornton, CO and Kennewick, WA

There are
1,085 mi
from Thornton, CO to Kennewick, WA

That's the driving distance. It would take 18 hours 29 mins to go from Thornton, Colorado to Kennewick, Washington.

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

1,085 mi = 1.61 kms