Miles between Longmont, CO and Prospect Heights, IL

There are
1,005 mi
from Longmont, CO to Prospect Heights, IL

That's the driving distance. It would take 17 hours 58 mins to go from Longmont, Colorado to Prospect Heights, Illinois.

The flight distance (direct flight from Longmont, CO to Prospect Heights, IL) is 901.57 mi.

1,005 mi = 1.61 kms