There are
1,021 mi
from Johnson City, TN to Seabrook, TX
That's the driving distance. It would take 18 hours 45 mins to go from Johnson City, Tennessee to Seabrook, Texas.
The flight distance (direct flight from Johnson City, TN to Seabrook, TX) is 869.10 mi.
1,021 mi = 1,643.92 kms