There are
1,814 mi
from Garland, TX to Clearlake, CA
That's the driving distance. It would take 1 day 8 hours to go from Garland, Texas to Clearlake, California.
The flight distance (direct flight from Garland, TX to Clearlake, CA) is 1,506.77 mi.
1,814 mi = 2,919.13 kms