Miles between Thornton, CO and Monroe, WA

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

That's the driving distance. It would take 22 hours 43 mins to go from Thornton, Colorado to Monroe, Washington.

The flight distance (direct flight from Thornton, CO to Monroe, WA) is 1,007.37 mi.

1,297 mi = 1.61 kms