Miles between Boulder, CO and Greenfield, CA

There are
1,213 mi
from Boulder, CO to Greenfield, CA

That's the driving distance. It would take 21 hours 48 mins to go from Boulder, Colorado to Greenfield, California.

The flight distance (direct flight from Boulder, CO to Greenfield, CA) is 902.99 mi.

1,213 mi = 1.61 kms