There are
1,199 mi
from Greeley, CO to Clearlake, CA
That's the driving distance. It would take 21 hours 8 mins to go from Greeley, Colorado to Clearlake, California.
The flight distance (direct flight from Greeley, CO to Clearlake, CA) is 956.30 mi.
1,199 mi = 1,929.41 kms