Miles between Sioux Falls, SD and Longmont, CO

There are
627 mi
from Sioux Falls, SD to Longmont, CO

That's the driving distance. It would take 11 hours 46 mins to go from Sioux Falls, South Dakota to Longmont, Colorado.

The flight distance (direct flight from Sioux Falls, SD to Longmont, CO) is 491.15 mi.

627 mi = 1,009.47 kms