Miles between Downey, CA and Longmont, CO

There are
1,040 mi
from Downey, CA to Longmont, CO

That's the driving distance. It would take 18 hours 21 mins to go from Downey, California to Longmont, Colorado.

The flight distance (direct flight from Downey, CA to Longmont, CO) is 836.21 mi.

1,040 mi = 1.61 kms