There are
2,482 mi
from Roswell, GA to San Mateo, CA
That's the driving distance. It would take 1 day 20 hours to go from Roswell, Georgia to San Mateo, California.
The flight distance (direct flight from Roswell, GA to San Mateo, CA) is 2,127.23 mi.
2,482 mi = 3.22 kms