Miles between Longmont, CO and Mattoon, IL

There are
997 mi
from Longmont, CO to Mattoon, IL

That's the driving distance. It would take 17 hours 40 mins to go from Longmont, Colorado to Mattoon, Illinois.

The flight distance (direct flight from Longmont, CO to Mattoon, IL) is 887.66 mi.

997 mi = 1,605.25 kms