There are
2,538 mi
from Knoxville, TN to Rohnert Park, CA
That's the driving distance. It would take 1 day 20 hours to go from Knoxville, Tennessee to Rohnert Park, California.
The flight distance (direct flight from Knoxville, TN to Rohnert Park, CA) is 2,126.34 mi.
2,538 mi = 3.22 kms