There are 492.64 miles from Grafton to Alton in southwest direction and 607 miles (976.87 kilometers) by car, following the I-55 S route.
Grafton and Alton are 10 hours 5 mins far apart, if you drive non-stop .
This is the fastest route from Grafton, WI to Alton, MO. The halfway point is Toronto, IL.
Grafton, WI and Alton, MO are in the same time zone (CDT). Current time in both locations is 8:31 am.
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