Miles between Boulder, CO and Freeport, IL

There are
939 mi
from Boulder, CO to Freeport, IL

That's the driving distance. It would take 16 hours 59 mins to go from Boulder, Colorado to Freeport, Illinois.

The flight distance (direct flight from Boulder, CO to Freeport, IL) is 828 mi.

939 mi = 1,511.43 kms