Miles between Thornton, CO and Tukwila, WA

There are
1,297 mi
from Thornton, CO to Tukwila, WA

That's the driving distance. It would take 22 hours 29 mins to go from Thornton, Colorado to Tukwila, Washington.

The flight distance (direct flight from Thornton, CO to Tukwila, WA) is 1,007.94 mi.

1,297 mi = 1.61 kms