There are
1,629 mi
from Longmont, CO to Lexington, SC
That's the driving distance. It would take 1 day 5 hours to go from Longmont, Colorado to Lexington, South Carolina.
The flight distance (direct flight from Longmont, CO to Lexington, SC) is 1,378.34 mi.
1,629 mi = 1.61 kms