There are
1,592 mi
from Harlingen, TX to Cerritos, CA
That's the driving distance. It would take 1 day 3 hours to go from Harlingen, Texas to Cerritos, California.
The flight distance (direct flight from Harlingen, TX to Cerritos, CA) is 1,325.53 mi.
1,592 mi = 2,561.99 kms