There are
2,901 mi
from San Mateo, CA to Florham Park, NJ
That's the driving distance. It would take 2 days 3 hours to go from San Mateo, California to Florham Park, New Jersey.
The flight distance (direct flight from San Mateo, CA to Florham Park, NJ) is 2,545.33 mi.
2,901 mi = 3.22 kms