There are
546 mi
from Longview, TX to Leavenworth, KS
That's the driving distance. It would take 10 hours 26 mins to go from Longview, Texas to Leavenworth, Kansas.
The flight distance (direct flight from Longview, TX to Leavenworth, KS) is 470.66 mi.
546 mi = 878.36 kms