There are
1,311 mi
from Great Falls, MT to Cudahy, WI
That's the driving distance. It would take 23 hours 9 mins to go from Great Falls, Montana to Cudahy, Wisconsin.
The flight distance (direct flight from Great Falls, MT to Cudahy, WI) is 1,177.86 mi.
1,311 mi = 2,109.36 kms