There are
1,557 mi
from Brownsville, TX to Palmetto Bay, FL
That's the driving distance. It would take 1 day 5 hours to go from Brownsville, Texas to Palmetto Bay, Florida.
The flight distance (direct flight from Brownsville, TX to Palmetto Bay, FL) is 1,068 mi.
1,557 mi = 1.61 kms