There are
843 mi
from Waterloo, IA to Southlake, TX
That's the driving distance. It would take 15 hours 10 mins to go from Waterloo, Iowa to Southlake, Texas.
The flight distance (direct flight from Waterloo, IA to Southlake, TX) is 709.68 mi.
843 mi = 1,356.00 kms