There are
1,604 mi
from Thornton, CO to Lexington, SC
That's the driving distance. It would take 1 day 4 hours to go from Thornton, Colorado to Lexington, South Carolina.
The flight distance (direct flight from Thornton, CO to Lexington, SC) is 1,367.93 mi.
1,604 mi = 1.61 kms