There are
2,457 mi
from Knoxville, TN to Pittsburg, CA
That's the driving distance. It would take 1 day 19 hours to go from Knoxville, Tennessee to Pittsburg, California.
The flight distance (direct flight from Knoxville, TN to Pittsburg, CA) is 2,085.38 mi.
2,457 mi = 3,954.42 kms