There are
2,520 mi
from Johnson City, TN to Seaside, CA
That's the driving distance. It would take 1 day 20 hours to go from Johnson City, Tennessee to Seaside, California.
The flight distance (direct flight from Johnson City, TN to Seaside, CA) is 2,177.22 mi.
2,520 mi = 4,055.83 kms