There are
1,425 mi
from San Clemente, CA to Seagoville, TX
That's the driving distance. It would take 1 day to go from San Clemente, California to Seagoville, Texas.
The flight distance (direct flight from San Clemente, CA to Seagoville, TX) is 1,219.82 mi.
1,425 mi = 2,292.52 kms