There are
2,418 mi
from Chattanooga, TN to San Mateo, CA
That's the driving distance. It would take 1 day 18 hours to go from Chattanooga, Tennessee to San Mateo, California.
The flight distance (direct flight from Chattanooga, TN to San Mateo, CA) is 2,055.16 mi.
2,418 mi = 3,890.72 kms