There are
826 mi
from Roswell, GA to Leavenworth, KS
That's the driving distance. It would take 15 hours 40 mins to go from Roswell, Georgia to Leavenworth, Kansas.
The flight distance (direct flight from Roswell, GA to Leavenworth, KS) is 689.25 mi.
826 mi = 1,329.93 kms