Miles between Thornton, CO and Douglas, AZ

There are
847 mi
from Thornton, CO to Douglas, AZ

That's the driving distance. It would take 15 hours 18 mins to go from Thornton, Colorado to Douglas, Arizona.

The flight distance (direct flight from Thornton, CO to Douglas, AZ) is 642.26 mi.

847 mi = 1,363.26 kms