There are
1,374 mi
from Brownsville, TX to Waterloo, IA
That's the driving distance. It would take 1 day 1 hour to go from Brownsville, Texas to Waterloo, Iowa.
The flight distance (direct flight from Brownsville, TX to Waterloo, IA) is 1,182.95 mi.
1,374 mi = 1.61 kms