There are
1,085 mi
from Washington, DC to Leavenworth, KS
That's the driving distance. It would take 20 hours 56 mins to go from Washington, District of Columbia to Leavenworth, Kansas.
The flight distance (direct flight from Washington, DC to Leavenworth, KS) is 957.87 mi.
1,085 mi = 1.61 kms