There are
1,647 mi
from Great Falls, MT to Dearborn Heights, MI
That's the driving distance. It would take 1 day 5 hours to go from Great Falls, Montana to Dearborn Heights, Michigan.
The flight distance (direct flight from Great Falls, MT to Dearborn Heights, MI) is 1,408.46 mi.
1,647 mi = 2,650.58 kms