Miles between Boulder, CO and Mattoon, IL

There are
990 mi
from Boulder, CO to Mattoon, IL

That's the driving distance. It would take 17 hours 36 mins to go from Boulder, Colorado to Mattoon, Illinois.

The flight distance (direct flight from Boulder, CO to Mattoon, IL) is 897.08 mi.

990 mi = 1,592.70 kms