There are
1,545 mi
from Irvine, CA to Pasadena, TX
That's the driving distance. It would take 1 day 2 hours to go from Irvine, California to Pasadena, Texas.
The flight distance (direct flight from Irvine, CA to Pasadena, TX) is 1,353.34 mi.
1,545 mi = 1.61 kms