There are
2,561 mi
from Johnson City, TN to Danville, CA
That's the driving distance. It would take 1 day 20 hours to go from Johnson City, Tennessee to Danville, California.
The flight distance (direct flight from Johnson City, TN to Danville, CA) is 2,171.79 mi.
2,561 mi = 4,121.02 kms