Miles between Longmont, CO and Greenfield, CA

There are
1,226 mi
from Longmont, CO to Greenfield, CA

That's the driving distance. It would take 22 hours 1 min to go from Longmont, Colorado to Greenfield, California.

The flight distance (direct flight from Longmont, CO to Greenfield, CA) is 913.85 mi.

1,226 mi = 1.61 kms