There are
1,019 mi
from St Peters, MO to Mandan, ND
That's the driving distance. It would take 17 hours 36 mins to go from St Peters, Missouri to Mandan, North Dakota.
The flight distance (direct flight from St Peters, MO to Mandan, ND) is 760.99 mi.
1,019 mi = 1,639.18 kms