Miles between Ontario, CA and Spencer, IA

There are
1,667 mi
from Ontario, CA to Spencer, IA

That's the driving distance. It would take 1 day 5 hours to go from Ontario, California to Spencer, Iowa.

The flight distance (direct flight from Ontario, CA to Spencer, IA) is 1,361.65 mi.

1,667 mi = 1.61 kms