Miles between Longmont, CO and Summit, IL

There are
992 mi
from Longmont, CO to Summit, IL

That's the driving distance. It would take 17 hours 51 mins to go from Longmont, Colorado to Summit, Illinois.

The flight distance (direct flight from Longmont, CO to Summit, IL) is 907.35 mi.

992 mi = 1,597.25 kms