There are
1,165 mi
from Wheaton, IL to Seguin, TX
That's the driving distance. It would take 21 hours 24 mins to go from Wheaton, Illinois to Seguin, Texas.
The flight distance (direct flight from Wheaton, IL to Seguin, TX) is 1,012.16 mi.
1,165 mi = 1,875.35 kms