There are
994 mi
from Iowa City, IA to Sayreville, NJ
That's the driving distance. It would take 18 hours 45 mins to go from Iowa City, Iowa to Sayreville, New Jersey.
The flight distance (direct flight from Iowa City, IA to Sayreville, NJ) is 896.83 mi.
994 mi = 1,600.10 kms