There are
1,595 mi
from Newport Beach, CA to Mandan, ND
That's the driving distance. It would take 1 day 4 hours to go from Newport Beach, California to Mandan, North Dakota.
The flight distance (direct flight from Newport Beach, CA to Mandan, ND) is 1,275.55 mi.
1,595 mi = 2,566.59 kms