There are
2,965 mi
from San Mateo, CA to Norwalk, CT
That's the driving distance. It would take 2 days 4 hours to go from San Mateo, California to Norwalk, Connecticut.
The flight distance (direct flight from San Mateo, CA to Norwalk, CT) is 2,591.18 mi.
2,965 mi = 3.22 kms