There are
2,531 mi
from Hayward, CA to Greeneville, TN
That's the driving distance. It would take 1 day 20 hours to go from Hayward, California to Greeneville, Tennessee.
The flight distance (direct flight from Hayward, CA to Greeneville, TN) is 2,154.83 mi.
2,531 mi = 3.22 kms