There are
936 mi
from Union, NJ to Waunakee, WI
That's the driving distance. It would take 17 hours 39 mins to go from Union, New Jersey to Waunakee, Wisconsin.
The flight distance (direct flight from Union, NJ to Waunakee, WI) is 798.34 mi.
936 mi = 1,505.94 kms