There are
2,798 mi
from Keansburg, NJ to San Diego, CA
That's the driving distance. It would take 2 days 2 hours to go from Keansburg, New Jersey to San Diego, California.
The flight distance (direct flight from Keansburg, NJ to San Diego, CA) is 2,421.45 mi.
2,798 mi = 4,503.46 kms