Miles between Longmont, CO and Naperville, IL

There are
974 mi
from Longmont, CO to Naperville, IL

That's the driving distance. It would take 17 hours 20 mins to go from Longmont, Colorado to Naperville, Illinois.

The flight distance (direct flight from Longmont, CO to Naperville, IL) is 889.99 mi.

974 mi = 1,567.50 kms