Miles between Longmont, CO and Chicago, IL

There are
1,002 mi
from Longmont, CO to Chicago, IL

That's the driving distance. It would take 17 hours 55 mins to go from Longmont, Colorado to Chicago, Illinois.

The flight distance (direct flight from Longmont, CO to Chicago, IL) is 916.80 mi.

1,002 mi = 1.61 kms