Miles between Ontario, CA and Williston, ND

There are
1,517 mi
from Ontario, CA to Williston, ND

That's the driving distance. It would take 1 day 2 hours to go from Ontario, California to Williston, North Dakota.

The flight distance (direct flight from Ontario, CA to Williston, ND) is 1,212.70 mi.

1,517 mi = 1.61 kms