There are
1,213 mi
from Greeley, CO to Petaluma, CA
That's the driving distance. It would take 21 hours 1 min to go from Greeley, Colorado to Petaluma, California.
The flight distance (direct flight from Greeley, CO to Petaluma, CA) is 968.33 mi.
1,213 mi = 1,952.32 kms