There are
865 mi
from Passaic, NJ to Greenfield, WI
That's the driving distance. It would take 16 hours 9 mins to go from Passaic, New Jersey to Greenfield, Wisconsin.
The flight distance (direct flight from Passaic, NJ to Greenfield, WI) is 727.67 mi.
865 mi = 1,391.90 kms