There are
1,218 mi
from Greeley, CO to Larkspur, CA
That's the driving distance. It would take 21 hours 6 mins to go from Greeley, Colorado to Larkspur, California.
The flight distance (direct flight from Greeley, CO to Larkspur, CA) is 968.38 mi.
1,218 mi = 1.61 kms