There are 818.12 miles from Dewey to Arrowsmith in southeast direction and 1,041 miles (1,675.33 kilometers) by car, following the I-90 and US-14 route.
Dewey and Arrowsmith are 18 hours 46 mins far apart, if you drive non-stop .
This is the fastest route from Dewey, SD to Arrowsmith, IL. The halfway point is McCook Lake, SD.
Please note the time difference between Dewey, SD and Arrowsmith, IL is 1 hour. The current time in Dewey is 3:05 am and the current time in Arrowsmith is 4:05 am.
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