There are
1,615 mi
from Downey, CA to Leavenworth, KS
That's the driving distance. It would take 1 day 4 hours to go from Downey, California to Leavenworth, Kansas.
The flight distance (direct flight from Downey, CA to Leavenworth, KS) is 1,335.23 mi.
1,615 mi = 1.61 kms