Miles between Longmont, CO and Mt Prospect, IL

There are
1,002 mi
from Longmont, CO to Mt Prospect, IL

That's the driving distance. It would take 17 hours 57 mins to go from Longmont, Colorado to Mt Prospect, Illinois.

The flight distance (direct flight from Longmont, CO to Mt Prospect, IL) is 901.49 mi.

1,002 mi = 1.61 kms