There are
2,533 mi
from Walnut Creek, CA to Greeneville, TN
That's the driving distance. It would take 1 day 20 hours to go from Walnut Creek, California to Greeneville, Tennessee.
The flight distance (direct flight from Walnut Creek, CA to Greeneville, TN) is 2,151.33 mi.
2,533 mi = 4,075.73 kms