Miles between Washington, DC and Thornton, CO

There are
1,677 mi
from Washington, DC to Thornton, CO

That's the driving distance. It would take 1 day 6 hours to go from Washington, District of Columbia to Thornton, Colorado.

The flight distance (direct flight from Washington, DC to Thornton, CO) is 1,487.33 mi.

1,677 mi = 1.61 kms