There are
2,402 mi
from Crossville, TN to San Mateo, CA
That's the driving distance. It would take 1 day 18 hours to go from Crossville, Tennessee to San Mateo, California.
The flight distance (direct flight from Crossville, TN to San Mateo, CA) is 2,054.22 mi.
2,402 mi = 3,865.75 kms