Miles between Boulder, CO and Dekalb, IL

There are
957 mi
from Boulder, CO to Dekalb, IL

That's the driving distance. It would take 16 hours 49 mins to go from Boulder, Colorado to Dekalb, Illinois.

The flight distance (direct flight from Boulder, CO to Dekalb, IL) is 870.52 mi.

957 mi = 1,540.23 kms