Miles between Dayton, OH and Spencer, IA

There are
743 mi
from Dayton, OH to Spencer, IA

That's the driving distance. It would take 14 hours 15 mins to go from Dayton, Ohio to Spencer, Iowa.

The flight distance (direct flight from Dayton, OH to Spencer, IA) is 612.95 mi.

743 mi = 1,196.17 kms