There are
2,301 mi
from Johnson City, TN to Oceanside, CA
That's the driving distance. It would take 1 day 16 hours to go from Johnson City, Tennessee to Oceanside, California.
The flight distance (direct flight from Johnson City, TN to Oceanside, CA) is 1,989.08 mi.
2,301 mi = 3,703.30 kms