There are
1,555 mi
from Bismarck, ND to Oakley, CA
That's the driving distance. It would take 1 day 3 hours to go from Bismarck, North Dakota to Oakley, California.
The flight distance (direct flight from Bismarck, ND to Oakley, CA) is 1,223.53 mi.
1,555 mi = 2,501.88 kms