Miles between Ontario, CA and South Portland, ME

There are
3,059 mi
from Ontario, CA to South Portland, ME

That's the driving distance. It would take 2 days 6 hours to go from Ontario, California to South Portland, Maine.

The flight distance (direct flight from Ontario, CA to South Portland, ME) is 2,598.05 mi.

3,059 mi = 4.83 kms