There are
2,912 mi
from Trenton, NJ to San Mateo, CA
That's the driving distance. It would take 2 days 3 hours to go from Trenton, New Jersey to San Mateo, California.
The flight distance (direct flight from Trenton, NJ to San Mateo, CA) is 2,534.80 mi.
2,912 mi = 3.22 kms