There are
1,036 mi
from Thornton, CO to Cudahy, WI
That's the driving distance. It would take 18 hours 24 mins to go from Thornton, Colorado to Cudahy, Wisconsin.
The flight distance (direct flight from Thornton, CO to Cudahy, WI) is 910.22 mi.
1,036 mi = 1.61 kms