There are
1,592 mi
from Buena Park, CA to Harlingen, TX
That's the driving distance. It would take 1 day 3 hours to go from Buena Park, California to Harlingen, Texas.
The flight distance (direct flight from Buena Park, CA to Harlingen, TX) is 1,322.08 mi.
1,592 mi = 1.61 kms