There are
2,456 mi
from San Mateo, CA to Oak Ridge, TN
That's the driving distance. It would take 1 day 19 hours to go from San Mateo, California to Oak Ridge, Tennessee.
The flight distance (direct flight from San Mateo, CA to Oak Ridge, TN) is 2,094.16 mi.
2,456 mi = 3.22 kms