There are
1,514 mi
from Clemson, SC to Thornton, CO
That's the driving distance. It would take 1 day 3 hours to go from Clemson, South Carolina to Thornton, Colorado.
The flight distance (direct flight from Clemson, SC to Thornton, CO) is 1,264.80 mi.
1,514 mi = 2,437.06 kms