There are
2,440 mi
from Pittsburg, CA to Oak Ridge, TN
That's the driving distance. It would take 1 day 18 hours to go from Pittsburg, California to Oak Ridge, Tennessee.
The flight distance (direct flight from Pittsburg, CA to Oak Ridge, TN) is 2,065.66 mi.
2,440 mi = 3,926.92 kms