There are
1,535 mi
from Pasadena, TX to Walnut, CA
That's the driving distance. It would take 1 day 2 hours to go from Pasadena, Texas to Walnut, California.
The flight distance (direct flight from Pasadena, TX to Walnut, CA) is 1,359.78 mi.
1,535 mi = 1.61 kms