There are
2,420 mi
from Chattanooga, TN to Foster City, CA
That's the driving distance. It would take 1 day 18 hours to go from Chattanooga, Tennessee to Foster City, California.
The flight distance (direct flight from Chattanooga, TN to Foster City, CA) is 2,052.20 mi.
2,420 mi = 3,894.76 kms