There are
2,470 mi
from Concord, CA to Knoxville, TN
That's the driving distance. It would take 1 day 19 hours to go from Concord, California to Knoxville, Tennessee.
The flight distance (direct flight from Concord, CA to Knoxville, TN) is 2,093.74 mi.
2,470 mi = 3,974.28 kms