Miles between Decatur, IL and Boulder, CO

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

That's the driving distance. It would take 17 hours 10 mins to go from Decatur, Illinois to Boulder, Colorado.

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

970 mi = 1,560.59 kms