There are
2,810 mi
from Union, NJ to Escondido, CA
That's the driving distance. It would take 2 days 2 hours to go from Union, New Jersey to Escondido, California.
The flight distance (direct flight from Union, NJ to Escondido, CA) is 2,398.43 mi.
2,810 mi = 4,521.84 kms