There are
1,005 mi
from Longmont, CO to Lincolnwood, IL
That's the driving distance. It would take 18 hours 4 mins to go from Longmont, Colorado to Lincolnwood, Illinois.
The flight distance (direct flight from Longmont, CO to Lincolnwood, IL) is 911.93 mi.
1,005 mi = 1.61 kms