There are
1,213 mi
from Newark, NJ to Leavenworth, KS
That's the driving distance. It would take 23 hours 18 mins to go from Newark, New Jersey to Leavenworth, Kansas.
The flight distance (direct flight from Newark, NJ to Leavenworth, KS) is 1,099.72 mi.
1,213 mi = 1.61 kms