There are
1,920 mi
from Pasadena, TX to Walnut Creek, CA
That's the driving distance. It would take 1 day 9 hours to go from Pasadena, Texas to Walnut Creek, California.
The flight distance (direct flight from Pasadena, TX to Walnut Creek, CA) is 1,636.04 mi.
1,920 mi = 1.61 kms