There are
1,640 mi
from Oxnard, CA to Mandan, ND
That's the driving distance. It would take 1 day 5 hours to go from Oxnard, California to Mandan, North Dakota.
The flight distance (direct flight from Oxnard, CA to Mandan, ND) is 1,291.86 mi.
1,640 mi = 1.61 kms