Miles between Longmont, CO and Avondale, AZ

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

That's the driving distance. It would take 16 hours 18 mins to go from Longmont, Colorado to Avondale, Arizona.

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

856 mi = 1,378.25 kms