Miles between Longmont, CO and Rockford, IL

There are
957 mi
from Longmont, CO to Rockford, IL

That's the driving distance. It would take 17 hours 2 mins to go from Longmont, Colorado to Rockford, Illinois.

The flight distance (direct flight from Longmont, CO to Rockford, IL) is 843.25 mi.

957 mi = 1,540.25 kms