Miles between Decatur, IL and Longmont, CO

There are
977 mi
from Decatur, IL to Longmont, CO

That's the driving distance. It would take 17 hours 13 mins to go from Decatur, Illinois to Longmont, Colorado.

The flight distance (direct flight from Decatur, IL to Longmont, CO) is 853.72 mi.

977 mi = 1,572.97 kms