Miles between Longmont, CO and Sioux Falls, SD

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

That's the driving distance. It would take 11 hours 45 mins to go from Longmont, Colorado to Sioux Falls, South Dakota.

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

626 mi = 1,007.90 kms