There are
1,602 mi
from Pasadena, CA to Harlingen, TX
That's the driving distance. It would take 1 day 3 hours to go from Pasadena, California to Harlingen, Texas.
The flight distance (direct flight from Pasadena, CA to Harlingen, TX) is 1,336.21 mi.
1,602 mi = 1.61 kms