There are
1,000 mi
from Longmont, CO to Midlothian, IL
That's the driving distance. It would take 17 hours 49 mins to go from Longmont, Colorado to Midlothian, Illinois.
The flight distance (direct flight from Longmont, CO to Midlothian, IL) is 911.94 mi.
1,000 mi = 1,609.07 kms