There are
2,764 mi
from Irvine, CA to Florham Park, NJ
That's the driving distance. It would take 2 days 1 hour to go from Irvine, California to Florham Park, New Jersey.
The flight distance (direct flight from Irvine, CA to Florham Park, NJ) is 2,412.35 mi.
2,764 mi = 4,448.71 kms