There are
1,112 mi
from St Petersburg, FL to Seagoville, TX
That's the driving distance. It would take 20 hours 31 mins to go from St Petersburg, Florida to Seagoville, Texas.
The flight distance (direct flight from St Petersburg, FL to Seagoville, TX) is 894.48 mi.
1,112 mi = 1.61 kms