There are
626 mi
from Dayton, OH to Leavenworth, KS
That's the driving distance. It would take 12 hours 1 min to go from Dayton, Ohio to Leavenworth, Kansas.
The flight distance (direct flight from Dayton, OH to Leavenworth, KS) is 572.31 mi.
626 mi = 1,007.11 kms