There are
1,100 mi
from Passaic, NJ to Johnston, IA
That's the driving distance. It would take 20 hours 19 mins to go from Passaic, New Jersey to Johnston, Iowa.
The flight distance (direct flight from Passaic, NJ to Johnston, IA) is 1,016.13 mi.
1,100 mi = 1,769.50 kms