Miles between Ontario, CA and Maryland Heights, MO

There are
1,788 mi
from Ontario, CA to Maryland Heights, MO

That's the driving distance. It would take 1 day 7 hours to go from Ontario, California to Maryland Heights, Missouri.

The flight distance (direct flight from Ontario, CA to Maryland Heights, MO) is 1,541.74 mi.

1,788 mi = 2,877.36 kms