Miles between Ontario, CA and Johnston, IA

There are
1,649 mi
from Ontario, CA to Johnston, IA

That's the driving distance. It would take 1 day 4 hours to go from Ontario, California to Johnston, Iowa.

The flight distance (direct flight from Ontario, CA to Johnston, IA) is 1,402.02 mi.

1,649 mi = 1.61 kms