There are
948 mi
from Wheaton, IL to Seagoville, TX
That's the driving distance. It would take 17 hours 20 mins to go from Wheaton, Illinois to Seagoville, Texas.
The flight distance (direct flight from Wheaton, IL to Seagoville, TX) is 787.39 mi.
948 mi = 1,525.75 kms