There are
1,166 mi
from Longmont, CO to Shelbyville, KY
That's the driving distance. It would take 20 hours 48 mins to go from Longmont, Colorado to Shelbyville, Kentucky.
The flight distance (direct flight from Longmont, CO to Shelbyville, KY) is 1,070.77 mi.
1,166 mi = 1,875.93 kms