There are
1,975 mi
from Katy, TX to Clearlake, CA
That's the driving distance. It would take 1 day 10 hours to go from Katy, Texas to Clearlake, California.
The flight distance (direct flight from Katy, TX to Clearlake, CA) is 1,646.83 mi.
1,975 mi = 3,178.80 kms