There are
952 mi
from Thornton, CO to Stoughton, WI
That's the driving distance. It would take 17 hours 15 mins to go from Thornton, Colorado to Stoughton, Wisconsin.
The flight distance (direct flight from Thornton, CO to Stoughton, WI) is 841.92 mi.
952 mi = 1,532.11 kms