Miles between Boulder, CO and Decatur, IL

There are
969 mi
from Boulder, CO to Decatur, IL

That's the driving distance. It would take 17 hours 9 mins to go from Boulder, Colorado to Decatur, Illinois.

The flight distance (direct flight from Boulder, CO to Decatur, IL) is 863.38 mi.

969 mi = 1,559.06 kms