There are
830 mi
from Glendale, AZ to Clearlake, CA
That's the driving distance. It would take 15 hours 35 mins to go from Glendale, Arizona to Clearlake, California.
The flight distance (direct flight from Glendale, AZ to Clearlake, CA) is 691.11 mi.
830 mi = 1,336.32 kms