Miles between Longmont, CO and Lake In The Hills, IL

There are
977 mi
from Longmont, CO to Lake In The Hills, IL

That's the driving distance. It would take 17 hours 38 mins to go from Longmont, Colorado to Lake In The Hills, Illinois.

The flight distance (direct flight from Longmont, CO to Lake In The Hills, IL) is 881.79 mi.

977 mi = 1,572.52 kms