Miles between Ontario, CA and St Marys, PA

There are
2,505 mi
from Ontario, CA to St Marys, PA

That's the driving distance. It would take 1 day 20 hours to go from Ontario, California to St Marys, Pennsylvania.

The flight distance (direct flight from Ontario, CA to St Marys, PA) is 2,176.84 mi.

2,505 mi = 3.22 kms