Miles between Rockford, IL and Boulder, CO

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

That's the driving distance. It would take 17 hours 6 mins to go from Rockford, Illinois to Boulder, Colorado.

The flight distance (direct flight from Rockford, IL to Boulder, CO) is 854.66 mi.

970 mi = 1,561.83 kms