There are
1,975 mi
from Boise, ID to Saginaw, MI
That's the driving distance. It would take 1 day 10 hours to go from Boise, Idaho to Saginaw, Michigan.
The flight distance (direct flight from Boise, ID to Saginaw, MI) is 1,607.49 mi.
1,975 mi = 1.61 kms