There are
2,473 mi
from Johnson City, TN to Greenfield, CA
That's the driving distance. It would take 1 day 19 hours to go from Johnson City, Tennessee to Greenfield, California.
The flight distance (direct flight from Johnson City, TN to Greenfield, CA) is 2,150.12 mi.
2,473 mi = 3,979.69 kms