Miles between Avondale, AZ and Longmont, CO

There are
857 mi
from Avondale, AZ to Longmont, CO

That's the driving distance. It would take 16 hours 21 mins to go from Avondale, Arizona to Longmont, Colorado.

The flight distance (direct flight from Avondale, AZ to Longmont, CO) is 613.63 mi.

857 mi = 1,378.93 kms