There are
2,703 mi
from San Mateo, CA to Mt Airy, NC
That's the driving distance. It would take 1 day 23 hours to go from San Mateo, California to Mt Airy, North Carolina.
The flight distance (direct flight from San Mateo, CA to Mt Airy, NC) is 2,283.17 mi.
2,703 mi = 3.22 kms