There are
2,511 mi
from Knoxville, TN to Petaluma, CA
That's the driving distance. It would take 1 day 20 hours to go from Knoxville, Tennessee to Petaluma, California.
The flight distance (direct flight from Knoxville, TN to Petaluma, CA) is 2,123.92 mi.
2,511 mi = 4,041.84 kms