There are 326.87 miles from Harrison to Sumner in east direction and 408 miles (656.61 kilometers) by car, following the I-90 route.
Harrison and Sumner are 7 hours 33 mins far apart, if you drive non-stop .
This is the fastest route from Harrison, SD to Sumner, IA.
Harrison, SD and Sumner, IA are in the same time zone (CDT). Current time in both locations is 2:20 am.
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