There are
1,562 mi
from Bethlehem, PA to Mandan, ND
That's the driving distance. It would take 1 day 4 hours to go from Bethlehem, Pennsylvania to Mandan, North Dakota.
The flight distance (direct flight from Bethlehem, PA to Mandan, ND) is 1,337.27 mi.
1,562 mi = 2,513.77 kms