Miles between Ontario, CA and Marlborough, MA

There are
2,935 mi
from Ontario, CA to Marlborough, MA

That's the driving distance. It would take 2 days 4 hours to go from Ontario, California to Marlborough, Massachusetts.

The flight distance (direct flight from Ontario, CA to Marlborough, MA) is 2,535.19 mi.

2,935 mi = 3.22 kms