There are
1,740 mi
from Concord, CA to Seagoville, TX
That's the driving distance. It would take 1 day 6 hours to go from Concord, California to Seagoville, Texas.
The flight distance (direct flight from Concord, CA to Seagoville, TX) is 1,478.79 mi.
1,740 mi = 2,799.50 kms