There are
1,195 mi
from St George, UT to Seagoville, TX
That's the driving distance. It would take 22 hours 9 mins to go from St George, Utah to Seagoville, Texas.
The flight distance (direct flight from St George, UT to Seagoville, TX) is 1,012.16 mi.
1,195 mi = 1.61 kms