There are
1,137 mi
from Longmont, CO to Jeffersonville, IN
That's the driving distance. It would take 20 hours 15 mins to go from Longmont, Colorado to Jeffersonville, Indiana.
The flight distance (direct flight from Longmont, CO to Jeffersonville, IN) is 1,042.61 mi.
1,137 mi = 1.61 kms