There are
1,107 mi
from Thornton, CO to Clarksdale, MS
That's the driving distance. It would take 19 hours 22 mins to go from Thornton, Colorado to Clarksdale, Mississippi.
The flight distance (direct flight from Thornton, CO to Clarksdale, MS) is 884.12 mi.
1,107 mi = 1.61 kms