There are
1,505 mi
from Miramar, FL to Harlingen, TX
That's the driving distance. It would take 1 day 3 hours to go from Miramar, Florida to Harlingen, Texas.
The flight distance (direct flight from Miramar, FL to Harlingen, TX) is 1,079.65 mi.
1,505 mi = 1.61 kms