Miles between Ontario, CA and Waltham, MA

There are
2,949 mi
from Ontario, CA to Waltham, MA

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

The flight distance (direct flight from Ontario, CA to Waltham, MA) is 2,551.24 mi.

2,949 mi = 3.22 kms