There are
1,223 mi
from Thornton, CO to Ridgeland, MS
That's the driving distance. It would take 21 hours 44 mins to go from Thornton, Colorado to Ridgeland, Mississippi.
The flight distance (direct flight from Thornton, CO to Ridgeland, MS) is 972.55 mi.
1,223 mi = 1.61 kms