There are
2,780 mi
from Carlsbad, CA to Sayreville, NJ
That's the driving distance. It would take 2 days 2 hours to go from Carlsbad, California to Sayreville, New Jersey.
The flight distance (direct flight from Carlsbad, CA to Sayreville, NJ) is 2,406.55 mi.
2,780 mi = 4,473.61 kms